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/**
* o------------------------------------------------------------------------------o
* | This file is part of the RGraph package - you can learn more at: |
* | |
* | http://www.rgraph.net |
* | |
* | This package is licensed under the RGraph license. For all kinds of business |
* | purposes there is a small one-time licensing fee to pay and for non |
* | commercial purposes it is free to use. You can read the full license here: |
* | |
* | http://www.rgraph.net/LICENSE.txt |
* o------------------------------------------------------------------------------o
*/
if (typeof(RGraph) == 'undefined') RGraph = {};
/**
* The scatter graph constructor
*
* @param object canvas The cxanvas object
* @param array data The chart data
*/
RGraph.Scatter = function (id, data)
{
// Get the canvas and context objects
this.id = id;
this.canvas = document.getElementById(id);
this.canvas.__object__ = this;
this.context = this.canvas.getContext ? this.canvas.getContext("2d") : null;
this.max = 0;
this.coords = [];
this.data = [];
this.type = 'scatter';
this.isRGraph = true;
/**
* Compatibility with older browsers
*/
RGraph.OldBrowserCompat(this.context);
// Various config properties
this.properties = {
'chart.background.barcolor1': 'rgba(0,0,0,0)',
'chart.background.barcolor2': 'rgba(0,0,0,0)',
'chart.background.grid': true,
'chart.background.grid.width': 1,
'chart.background.grid.color': '#ddd',
'chart.background.grid.hsize': 20,
'chart.background.grid.vsize': 20,
'chart.background.hbars': null,
'chart.background.vbars': null,
'chart.background.grid.vlines': true,
'chart.background.grid.hlines': true,
'chart.background.grid.border': true,
'chart.background.grid.autofit':true,
'chart.background.grid.autofit.numhlines': 5,
'chart.background.grid.autofit.numvlines': 20,
'chart.text.size': 10,
'chart.text.angle': 0,
'chart.text.color': 'black',
'chart.text.font': 'Arial',
'chart.tooltips.effect': 'fade',
'chart.tooltips.hotspot': 3,
'chart.tooltips.css.class': 'RGraph_tooltip',
'chart.tooltips.highlight': true,
'chart.units.pre': '',
'chart.units.post': '',
'chart.numyticks': 10,
'chart.tickmarks': 'cross',
'chart.ticksize': 5,
'chart.xticks': true,
'chart.xaxis': true,
'chart.gutter.left': 25,
'chart.gutter.right': 25,
'chart.gutter.top': 25,
'chart.gutter.bottom': 25,
'chart.xmin': 0,
'chart.xmax': 0,
'chart.ymax': null,
'chart.ymin': null,
'chart.scale.decimals': null,
'chart.scale.point': '.',
'chart.scale.thousand': ',',
'chart.title': '',
'chart.title.background': null,
'chart.title.hpos': null,
'chart.title.vpos': null,
'chart.title.bold': true,
'chart.title.font': null,
'chart.title.xaxis': '',
'chart.title.xaxis.bold': true,
'chart.title.xaxis.size': null,
'chart.title.xaxis.font': null,
'chart.title.yaxis': '',
'chart.title.yaxis.bold': true,
'chart.title.yaxis.size': null,
'chart.title.yaxis.font': null,
'chart.title.xaxis.pos': null,
'chart.title.yaxis.pos': null,
'chart.labels': [],
'chart.labels.ingraph': null,
'chart.labels.above': false,
'chart.labels.above.size': 8,
'chart.labels.above.decimals': 0,
'chart.ylabels': true,
'chart.ylabels.count': 5,
'chart.ylabels.invert': false,
'chart.ylabels.specific': null,
'chart.ylabels.inside': false,
'chart.contextmenu': null,
'chart.defaultcolor': 'black',
'chart.xaxispos': 'bottom',
'chart.yaxispos': 'left',
'chart.crosshairs': false,
'chart.crosshairs.color': '#333',
'chart.crosshairs.linewidth': 1,
'chart.crosshairs.coords': false,
'chart.crosshairs.coords.fixed':true,
'chart.crosshairs.coords.fadeout':false,
'chart.crosshairs.coords.labels.x': 'X',
'chart.crosshairs.coords.labels.y': 'Y',
'chart.crosshairs.hline': true,
'chart.crosshairs.vline': true,
'chart.annotatable': false,
'chart.annotate.color': 'black',
'chart.line': false,
'chart.line.linewidth': 1,
'chart.line.colors': ['green', 'red'],
'chart.line.shadow.color': 'rgba(0,0,0,0)',
'chart.line.shadow.blur': 2,
'chart.line.shadow.offsetx': 3,
'chart.line.shadow.offsety': 3,
'chart.line.stepped': false,
'chart.noaxes': false,
'chart.key': [],
'chart.key.background': 'white',
'chart.key.position': 'graph',
'chart.key.halign': 'right',
'chart.key.shadow': false,
'chart.key.shadow.color': '#666',
'chart.key.shadow.blur': 3,
'chart.key.shadow.offsetx': 2,
'chart.key.shadow.offsety': 2,
'chart.key.position.gutter.boxed': true,
'chart.key.position.x': null,
'chart.key.position.y': null,
'chart.key.color.shape': 'square',
'chart.key.rounded': true,
'chart.key.linewidth': 1,
'chart.key.colors': null,
'chart.axis.color': 'black',
'chart.zoom.factor': 1.5,
'chart.zoom.fade.in': true,
'chart.zoom.fade.out': true,
'chart.zoom.hdir': 'right',
'chart.zoom.vdir': 'down',
'chart.zoom.frames': 25,
'chart.zoom.delay': 16.666,
'chart.zoom.shadow': true,
'chart.zoom.mode': 'canvas',
'chart.zoom.thumbnail.width': 75,
'chart.zoom.thumbnail.height': 75,
'chart.zoom.thumbnail.fixed': false,
'chart.zoom.background': true,
'chart.zoom.action': 'zoom',
'chart.boxplot.width': 1,
'chart.boxplot.capped': true,
'chart.resizable': false,
'chart.resize.handle.background': null,
'chart.xmin': 0,
'chart.labels.specific.align': 'left',
'chart.xscale': false,
'chart.xscale.units.pre': '',
'chart.xscale.units.post': '',
'chart.xscale.numlabels': 10,
'chart.xscale.formatter': null,
'chart.noendxtick': false,
'chart.noendytick': true
}
// Handle multiple datasets being given as one argument
if (arguments[1][0] && arguments[1][0][0] && typeof(arguments[1][0][0][0]) == 'number') {
// Store the data set(s)
for (var i=0; i<arguments[1].length; ++i) {
this.data[i] = arguments[1][i];
}
// Handle multiple data sets being supplied as seperate arguments
} else {
// Store the data set(s)
for (var i=1; i<arguments.length; ++i) {
this.data[i - 1] = arguments[i];
}
}
// Check for support
if (!this.canvas) {
alert('[SCATTER] No canvas support');
return;
}
/**
* Set the .getShape commonly named method
*/
this.getShape = this.getPoint;
}
/**
* A simple setter
*
* @param string name The name of the property to set
* @param string value The value of the property
*/
RGraph.Scatter.prototype.Set = function (name, value)
{
/**
* This is here because the key expects a name of "chart.colors"
*/
if (name == 'chart.line.colors') {
this.properties['chart.colors'] = value;
}
/**
* Allow compatibility with older property names
*/
if (name == 'chart.tooltip.hotspot') {
name = 'chart.tooltips.hotspot';
}
/**
* chart.yaxispos should be left or right
*/
if (name == 'chart.yaxispos' && value != 'left' && value != 'right') {
alert("[SCATTER] chart.yaxispos should be left or right. You've set it to: '" + value + "' Changing it to left");
value = 'left';
}
/**
* Check for xaxispos
*/
if (name == 'chart.xaxispos' ) {
if (value != 'bottom' && value != 'center') {
alert('[SCATTER] (' + this.id + ') chart.xaxispos should be center or bottom. Tried to set it to: ' + value + ' Changing it to center');
value = 'center';
}
}
this.properties[name.toLowerCase()] = value;
}
/**
* A simple getter
*
* @param string name The name of the property to set
*/
RGraph.Scatter.prototype.Get = function (name)
{
return this.properties[name];
}
/**
* The function you call to draw the line chart
*/
RGraph.Scatter.prototype.Draw = function ()
{
// MUST be the first thing done!
if (typeof(this.Get('chart.background.image')) == 'string' && !this.__background_image__) {
RGraph.DrawBackgroundImage(this);
return;
}
/**
* Fire the onbeforedraw event
*/
RGraph.FireCustomEvent(this, 'onbeforedraw');
/**
* Clear all of this canvases event handlers (the ones installed by RGraph)
*/
RGraph.ClearEventListeners(this.id);
/**
* This is new in May 2011 and facilitates indiviual gutter settings,
* eg chart.gutter.left
*/
this.gutterLeft = this.Get('chart.gutter.left');
this.gutterRight = this.Get('chart.gutter.right');
this.gutterTop = this.Get('chart.gutter.top');
this.gutterBottom = this.Get('chart.gutter.bottom');
// Go through all the data points and see if a tooltip has been given
this.Set('chart.tooltips', false);
this.hasTooltips = false;
var overHotspot = false;
// Reset the coords array
this.coords = [];
if (!RGraph.isOld()) {
for (var i=0; i<this.data.length; ++i) {
for (var j =0;j<this.data[i].length; ++j) {
if (this.data[i][j] && this.data[i][j][3] && typeof(this.data[i][j][3]) == 'string' && this.data[i][j][3].length) {
this.Set('chart.tooltips', [1]); // An array
this.hasTooltips = true;
}
}
}
}
// Reset the maximum value
this.max = 0;
// Work out the maximum Y value
if (this.Get('chart.ymax') && this.Get('chart.ymax') > 0) {
this.scale = [];
this.max = this.Get('chart.ymax');
this.min = this.Get('chart.ymin') ? this.Get('chart.ymin') : 0;
this.scale[0] = ((this.max - this.min) * (1/5)) + this.min;
this.scale[1] = ((this.max - this.min) * (2/5)) + this.min;
this.scale[2] = ((this.max - this.min) * (3/5)) + this.min;
this.scale[3] = ((this.max - this.min) * (4/5)) + this.min;
this.scale[4] = ((this.max - this.min) * (5/5)) + this.min;
var decimals = this.Get('chart.scale.decimals');
this.scale = [
Number(this.scale[0]).toFixed(decimals),
Number(this.scale[1]).toFixed(decimals),
Number(this.scale[2]).toFixed(decimals),
Number(this.scale[3]).toFixed(decimals),
Number(this.scale[4]).toFixed(decimals)
];
} else {
var i = 0;
var j = 0;
for (i=0; i<this.data.length; ++i) {
for (j=0; j<this.data[i].length; ++j) {
this.max = Math.max(this.max, typeof(this.data[i][j][1]) == 'object' ? RGraph.array_max(this.data[i][j][1]) : Math.abs(this.data[i][j][1]));
}
}
this.scale = RGraph.getScale(this.max, this);
this.max = this.scale[4];
this.min = this.Get('chart.ymin') ? this.Get('chart.ymin') : 0;
if (this.min) {
this.scale[0] = ((this.max - this.min) * (1/5)) + this.min;
this.scale[1] = ((this.max - this.min) * (2/5)) + this.min;
this.scale[2] = ((this.max - this.min) * (3/5)) + this.min;
this.scale[3] = ((this.max - this.min) * (4/5)) + this.min;
this.scale[4] = ((this.max - this.min) * (5/5)) + this.min;
}
if (typeof(this.Get('chart.scale.decimals')) == 'number') {
var decimals = this.Get('chart.scale.decimals');
this.scale = [
Number(this.scale[0]).toFixed(decimals),
Number(this.scale[1]).toFixed(decimals),
Number(this.scale[2]).toFixed(decimals),
Number(this.scale[3]).toFixed(decimals),
Number(this.scale[4]).toFixed(decimals)
];
}
}
this.grapharea = this.canvas.height - this.gutterTop - this.gutterBottom;
// Progressively Draw the chart
RGraph.background.Draw(this);
/**
* Draw any horizontal bars that have been specified
*/
if (this.Get('chart.background.hbars') && this.Get('chart.background.hbars').length) {
RGraph.DrawBars(this);
}
/**
* Draw any vertical bars that have been specified
*/
if (this.Get('chart.background.vbars') && this.Get('chart.background.vbars').length) {
this.DrawVBars();
}
if (!this.Get('chart.noaxes')) {
this.DrawAxes();
}
this.DrawLabels();
i = 0;
for(i=0; i<this.data.length; ++i) {
this.DrawMarks(i);
// Set the shadow
this.context.shadowColor = this.Get('chart.line.shadow.color');
this.context.shadowOffsetX = this.Get('chart.line.shadow.offsetx');
this.context.shadowOffsetY = this.Get('chart.line.shadow.offsety');
this.context.shadowBlur = this.Get('chart.line.shadow.blur');
this.DrawLine(i);
// Turn the shadow off
RGraph.NoShadow(this);
}
if (this.Get('chart.line')) {
for (var i=0;i<this.data.length; ++i) {
this.DrawMarks(i); // Call this again so the tickmarks appear over the line
}
}
/**
* Setup the context menu if required
*/
if (this.Get('chart.contextmenu')) {
RGraph.ShowContext(this);
}
/**
* Install the event handler for tooltips
*/
if (this.hasTooltips) {
/**
* Register all charts
*/
RGraph.Register(this);
var overHotspot = false;
var canvas_onmousemove_func = function (e)
{
e = RGraph.FixEventObject(e);
var canvas = e.target;
var obj = canvas.__object__;
var context = obj.context;
var mouseCoords = RGraph.getMouseXY(e);
var point = obj.getPoint(e);
var overHotspot = false;
if (point) {
var __dataset__ = point[2];
var __index__ = point[3];
var __text__ = point[4];
var overHotspot = true;
if (point[4]) {
canvas.style.cursor = 'pointer';
if (
!RGraph.Registry.Get('chart.tooltip') ||
RGraph.Registry.Get('chart.tooltip').__text__ != __text__ ||
RGraph.Registry.Get('chart.tooltip').__index__ != __index__ ||
RGraph.Registry.Get('chart.tooltip').__dataset__ != __dataset__
) {
if (obj.Get('chart.tooltips.highlight')) {
RGraph.Redraw();
}
/**
* Get the tooltip text
*/
if (typeof(__text__) == 'function') {
var text = String(__text__(i));
} else {
var text = String(__text__);
}
RGraph.Tooltip(canvas, text, e.pageX, e.pageY, __index__);
RGraph.Registry.Get('chart.tooltip').__index__ = __index__;
if (RGraph.Registry.Get('chart.tooltip')) {
RGraph.Registry.Get('chart.tooltip').__dataset__ = __dataset__;
}
/**
* Draw a circle around the mark. Also highlight the boxplot if necessary
*/
if (obj.Get('chart.tooltips.highlight') && typeof(point[0]) == 'object') {
context.beginPath();
context.strokeStyle = 'black';
context.fillStyle = 'rgba(255,255,255,0.5)';
context.strokeRect(point[0][0], point[1][0], point[0][1], point[1][1]);
context.fillRect(point[0][0], point[1][0], point[0][1], point[1][1]);
context.stroke();
context.fill();
} else if (obj.Get('chart.tooltips.highlight') && typeof(point[0]) == 'number') {
context.beginPath();
context.fillStyle = 'rgba(255,255,255,0.5)';
context.arc(point[0], point[1], 3, 0, 6.28, 0);
context.fill();
}
}
}
}
/**
* Reset the pointer
*/
if (!overHotspot || !point[4]) {
canvas.style.cursor = 'default';
}
}
this.canvas.addEventListener('mousemove', canvas_onmousemove_func, false);
RGraph.AddEventListener(this.id, 'mousemove', canvas_onmousemove_func);
}
/**
* Draw the key if necessary
*/
if (this.Get('chart.key') && this.Get('chart.key').length) {
RGraph.DrawKey(this, this.Get('chart.key'), this.Get('chart.line.colors'));
}
/**
* Draw " above" labels if enabled
*/
if (this.Get('chart.labels.above')) {
this.DrawAboveLabels();
}
/**
* Draw the "in graph" labels, using the member function, NOT the shared function in RGraph.common.core.js
*/
this.DrawInGraphLabels(this);
/**
* Draw crosschairs
*/
RGraph.DrawCrosshairs(this);
/**
* If the canvas is annotatable, do install the event handlers
*/
if (this.Get('chart.annotatable')) {
RGraph.Annotate(this);
}
/**
* This bit shows the mini zoom window if requested
*/
if (this.Get('chart.zoom.mode') == 'thumbnail' || this.Get('chart.zoom.mode') == 'area') {
RGraph.ShowZoomWindow(this);
}
/**
* This function enables resizing
*/
if (this.Get('chart.resizable')) {
RGraph.AllowResizing(this);
}
/**
* Fire the RGraph ondraw event
*/
RGraph.FireCustomEvent(this, 'ondraw');
}
/**
* Draws the axes of the scatter graph
*/
RGraph.Scatter.prototype.DrawAxes = function ()
{
var canvas = this.canvas;
var context = this.context;
var graphHeight = RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom;
context.beginPath();
context.strokeStyle = this.Get('chart.axis.color');
context.lineWidth = 1;
// Draw the Y axis
if (this.Get('chart.yaxispos') == 'left') {
context.moveTo(AA(this, this.gutterLeft), this.gutterTop);
context.lineTo(AA(this, this.gutterLeft), RGraph.GetHeight(this) - this.gutterBottom);
} else {
context.moveTo(AA(this, RGraph.GetWidth(this) - this.gutterRight), this.gutterTop);
context.lineTo(AA(this, RGraph.GetWidth(this) - this.gutterRight), RGraph.GetHeight(this) - this.gutterBottom);
}
// Draw the X axis
if (this.Get('chart.xaxis')) {
if (this.Get('chart.xaxispos') == 'center') {
context.moveTo(this.gutterLeft, AA(this, this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) / 2)));
context.lineTo(this.canvas.width - this.gutterRight, AA(this, this.gutterTop + ((this.canvas.height - this.gutterTop - this.gutterBottom) / 2)));
} else {
context.moveTo(this.gutterLeft, AA(this, this.canvas.height - this.gutterBottom));
context.lineTo(this.canvas.width - this.gutterRight, AA(this, this.canvas.height - this.gutterBottom));
}
}
/**
* Draw the Y tickmarks
*/
var numyticks = this.Get('chart.numyticks');
for (y=this.gutterTop; y < this.canvas.height - this.gutterBottom + (this.Get('chart.xaxispos') == 'center' ? 1 : 0) ; y+=(graphHeight / numyticks)) {
// This is here to accomodate the X axis being at the center
if (y == (this.gutterTop + ((this.canvas.height - this.gutterTop - this.gutterBottom) / 2)) ) continue;
if (this.Get('chart.yaxispos') == 'left') {
context.moveTo(this.gutterLeft, AA(this, y));
context.lineTo(this.gutterLeft - 3, AA(this, y));
} else {
context.moveTo(this.canvas.width - this.gutterRight +3, AA(this, y));
context.lineTo(this.canvas.width - this.gutterRight, AA(this, y));
}
/**
* Draw an extra tick if the X axis isn't being shown
*/
if (this.Get('chart.xaxis') == false && this.Get('chart.noendytick') == false) {
this.context.moveTo(this.gutterLeft, AA(this, this.canvas.height - this.gutterBottom));
this.context.lineTo(this.gutterLeft - 3, AA(this, this.canvas.height - this.gutterBottom));
}
}
/**
* Draw the X tickmarks
*/
if (this.Get('chart.xticks') && this.Get('chart.xaxis')) {
var x = 0;
var y = (this.Get('chart.xaxispos') == 'center') ? this.gutterTop + (this.grapharea / 2): (this.canvas.height - this.gutterBottom);
this.xTickGap = (this.Get('chart.labels') && this.Get('chart.labels').length) ? ((this.canvas.width - this.gutterLeft - this.gutterRight ) / this.Get('chart.labels').length) : (this.canvas.width - this.gutterLeft - this.gutterRight) / 10;
for (x = (this.gutterLeft + (this.Get('chart.yaxispos') == 'left' ? this.xTickGap : 0) );
x <= (this.canvas.width - this.gutterRight - (this.Get('chart.yaxispos') == 'left' ? -1 : 1));
x += this.xTickGap) {
if (this.Get('chart.yaxispos') == 'left' && this.Get('chart.noendxtick') == true && x == (this.canvas.width - this.gutterRight) ) {
continue;
} else if (this.Get('chart.yaxispos') == 'right' && this.Get('chart.noendxtick') == true && x == this.gutterLeft) {
continue;
}
context.moveTo(AA(this, x), y - (this.Get('chart.xaxispos') == 'center' ? 3 : 0));
context.lineTo(AA(this, x), y + 3);
}
}
context.stroke();
}
/**
* Draws the labels on the scatter graph
*/
RGraph.Scatter.prototype.DrawLabels = function ()
{
this.context.fillStyle = this.Get('chart.text.color');
var font = this.Get('chart.text.font');
var xMin = this.Get('chart.xmin');
var xMax = this.Get('chart.xmax');
var yMax = this.scale[4];
var yMin = this.Get('chart.ymin');
var text_size = this.Get('chart.text.size');
var units_pre = this.Get('chart.units.pre');
var units_post = this.Get('chart.units.post');
var numYLabels = this.Get('chart.ylabels.count');
var invert = this.Get('chart.ylabels.invert');
var inside = this.Get('chart.ylabels.inside');
var context = this.context;
var canvas = this.canvas;
var boxed = false;
this.halfTextHeight = text_size / 2;
this.halfGraphHeight = (this.canvas.height - this.gutterTop - this.gutterBottom) / 2;
/**
* Draw the Y yaxis labels, be it at the top or center
*/
if (this.Get('chart.ylabels')) {
var xPos = this.Get('chart.yaxispos') == 'left' ? this.gutterLeft - 5 : RGraph.GetWidth(this) - this.gutterRight + 5;
var align = this.Get('chart.yaxispos') == 'right' ? 'left' : 'right';
/**
* Now change the two things above if chart.ylabels.inside is specified
*/
if (inside) {
if (this.Get('chart.yaxispos') == 'left') {
xPos = this.Get('chart.gutter.left') + 5;
align = 'left';
boxed = true;
} else {
xPos = this.canvas.width - this.Get('chart.gutter.right') - 5;
align = 'right';
boxed = true;
}
}
if (this.Get('chart.xaxispos') == 'center') {
/**
* Specific Y labels
*/
if (typeof(this.Get('chart.ylabels.specific')) == 'object' && this.Get('chart.ylabels.specific') != null && this.Get('chart.ylabels.specific').length) {
var labels = this.Get('chart.ylabels.specific');
if (this.Get('chart.ymin') > 0) {
labels = [];
for (var i=0; i<(this.Get('chart.ylabels.specific').length - 1); ++i) {
labels.push(this.Get('chart.ylabels.specific')[i]);
}
}
for (var i=0; i<labels.length; ++i) {
var y = this.gutterTop + (i * (this.grapharea / (labels.length * 2) ) );
RGraph.Text(context, font, text_size, xPos, y, labels[i], 'center', align, boxed);
}
var reversed_labels = RGraph.array_reverse(labels);
for (var i=0; i<reversed_labels.length; ++i) {
var y = this.gutterTop + (this.grapharea / 2) + ((i+1) * (this.grapharea / (labels.length * 2) ) );
RGraph.Text(context,font, text_size, xPos, y, reversed_labels[i], 'center', align, boxed);
}
/**
* Draw the center label if chart.ymin is specified
*/
if (this.Get('chart.ymin') > 0) {
RGraph.Text(context, font, text_size, xPos, (this.grapharea / 2) + this.Get('chart.gutter.top'), this.Get('chart.ylabels.specific')[this.Get('chart.ylabels.specific').length - 1], 'center', align, boxed);
}
return;
}
if (numYLabels == 1 || numYLabels == 3 || numYLabels == 5) {
// Draw the top halves labels
RGraph.Text(context, font, text_size, xPos, this.gutterTop, RGraph.number_format(this, this.scale[4], units_pre, units_post), 'center', align, boxed);
if (numYLabels >= 5) {
RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) * (1/10) ), RGraph.number_format(this, this.scale[3], units_pre, units_post), 'center', align, boxed);
RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) * (3/10) ), RGraph.number_format(this, this.scale[1], units_pre, units_post), 'center', align, boxed);
}
if (numYLabels >= 3) {
RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) * (2/10) ), RGraph.number_format(this, this.scale[2], units_pre, units_post), 'center', align, boxed);
RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) * (4/10) ), RGraph.number_format(this, this.scale[0], units_pre, units_post), 'center', align, boxed);
}
// Draw the bottom halves labels
if (numYLabels >= 3) {
RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) * (1/10) ) + this.halfGraphHeight, '-' + RGraph.number_format(this, this.scale[0], units_pre, units_post), 'center', align, boxed);
RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) * (3/10) ) + this.halfGraphHeight, '-' + RGraph.number_format(this, this.scale[2], units_pre, units_post), 'center', align, boxed);
}
if (numYLabels == 5) {
RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) * (2/10) ) + this.halfGraphHeight, '-' + RGraph.number_format(this, this.scale[1], units_pre, units_post), 'center', align, boxed);
RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) * (4/10) ) + this.halfGraphHeight, '-' + RGraph.number_format(this, this.scale[3], units_pre, units_post), 'center', align, boxed);
}
RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((this.canvas.height - this.gutterTop - this.gutterBottom) * (5/10) ) + this.halfGraphHeight, '-' + RGraph.number_format(this, this.scale[4], units_pre, units_post), 'center', align, boxed);
} else if (numYLabels == 10) {
// 10 Y labels
var interval = (this.grapharea / numYLabels) / 2;
for (var i=0; i<numYLabels; ++i) {
RGraph.Text(context, font, text_size, xPos,this.gutterTop + ((this.canvas.height - this.gutterTop - this.gutterBottom) * (i/20) ),RGraph.number_format(this,(this.max - (this.max * (i/10))).toFixed(this.Get('chart.scale.decimals')),units_pre, units_post),'center', align, boxed);
RGraph.Text(context, font, text_size, xPos,this.gutterTop + ((this.canvas.height - this.gutterTop - this.gutterBottom) * (i/20) ) + (this.grapharea / 2) + (this.grapharea / 20),'-' + RGraph.number_format(this, ((this.max * (i/10)) + (this.max * (1/10))).toFixed((this.Get('chart.scale.decimals'))), units_pre, units_post), 'center', align, boxed);
}
} else {
alert('[SCATTER SCALE] Number of Y labels can be 1/3/5/10 only');
}
} else {
var xPos = this.Get('chart.yaxispos') == 'left' ? this.gutterLeft - 5 : this.canvas.width - this.gutterRight + 5;
var align = this.Get('chart.yaxispos') == 'right' ? 'left' : 'right';
if (inside) {
if (this.Get('chart.yaxispos') == 'left') {
xPos = this.Get('chart.gutter.left') + 5;
align = 'left';
boxed = true;
} else {
xPos = this.canvas.width - this.Get('chart.gutter.right') - 5;
align = 'right';
boxed = true;
}
}
/**
* Specific Y labels
*/
if (typeof(this.Get('chart.ylabels.specific')) == 'object' && this.Get('chart.ylabels.specific')) {
var labels = this.Get('chart.ylabels.specific');
// Lose the last label
if (this.Get('chart.ymin') > 0) {
labels = [];
for (var i=0; i<(this.Get('chart.ylabels.specific').length - 1); ++i) {
labels.push(this.Get('chart.ylabels.specific')[i]);
}
}
for (var i=0; i<labels.length; ++i) {
var y = this.gutterTop + (i * (this.grapharea / labels.length) );
RGraph.Text(context, font, text_size, xPos, y, labels[i], 'center', align, boxed);
}
/**
* Draw the center label if chart.ymin is specified
*/
if (this.Get('chart.ymin') > 0) {
RGraph.Text(context, font, text_size, xPos, this.canvas.height - this.Get('chart.gutter.bottom'), this.Get('chart.ylabels.specific')[this.Get('chart.ylabels.specific').length - 1], 'center', align, boxed);
}
return;
}
if (numYLabels == 1 || numYLabels == 3 || numYLabels == 5) {
if (invert) {
RGraph.Text(context, font, text_size, xPos, this.gutterTop, RGraph.number_format(this, 0, units_pre, units_post), 'center', align, boxed);
RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) * (5/5) ), RGraph.number_format(this, this.scale[4], units_pre, units_post), 'center', align, boxed);
if (numYLabels >= 5) {
RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((this.canvas.height - this.gutterTop - this.gutterBottom) * (2/5) ), RGraph.number_format(this, this.scale[1], units_pre, units_post), 'center', align, boxed);
RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((this.canvas.height - this.gutterTop - this.gutterBottom) * (4/5) ), RGraph.number_format(this, this.scale[3], units_pre, units_post), 'center', align, boxed);
}
if (numYLabels >= 3) {
RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((this.canvas.height - this.gutterTop - this.gutterBottom) * (3/5) ), RGraph.number_format(this, this.scale[2], units_pre, units_post), 'center', align, boxed);
RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((this.canvas.height - this.gutterTop - this.gutterBottom) * (1/5) ), RGraph.number_format(this, this.scale[0], units_pre, units_post), 'center', align, boxed);
}
} else {
RGraph.Text(context, font, text_size, xPos, this.gutterTop, RGraph.number_format(this, this.scale[4], units_pre, units_post), 'center', align, boxed);
if (numYLabels >= 5) {
RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((this.canvas.height - this.gutterTop - this.gutterBottom) * (1/5) ), RGraph.number_format(this, this.scale[3], units_pre, units_post), 'center', align, boxed);
RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((this.canvas.height - this.gutterTop - this.gutterBottom) * (3/5) ), RGraph.number_format(this, this.scale[1], units_pre, units_post), 'center', align, boxed);
}
if (numYLabels >= 3) {
RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((this.canvas.height - this.gutterTop - this.gutterBottom) * (2/5) ), RGraph.number_format(this, this.scale[2], units_pre, units_post), 'center', align, boxed);
RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((this.canvas.height - this.gutterTop - this.gutterBottom) * (4/5) ), RGraph.number_format(this, this.scale[0], units_pre, units_post), 'center', align, boxed);
}
}
} else if (numYLabels == 10) {
var interval = (this.grapharea / numYLabels) / 2;
if (invert) {
for (var i=numYLabels; i>=0; --i) {
RGraph.Text(context, font, text_size, xPos,this.gutterTop + ((this.canvas.height - this.gutterTop - this.gutterBottom) * ((10-i)/10) ),RGraph.number_format(this,(this.max - (this.max * (i/10))).toFixed((this.Get('chart.scale.decimals'))), units_pre, units_post),'center', align, boxed);
}
} else {
// 10 Y labels
for (var i=0; i<numYLabels; ++i) {
RGraph.Text(context, font, text_size, xPos,this.gutterTop + ((this.canvas.height - this.gutterTop - this.gutterBottom) * (i/10) ),RGraph.number_format(this, (this.max - ((this.max - this.min) * (i/10))).toFixed((this.Get('chart.scale.decimals'))), units_pre, units_post),'center', align, boxed);
}
}
} else {
alert('[SCATTER SCALE] Number of Y labels can be 1/3/5/10 only');
}
if (this.Get('chart.ymin')) {
RGraph.Text(context, font, text_size, xPos, this.canvas.height - this.gutterBottom,RGraph.number_format(this, this.Get('chart.ymin').toFixed(this.Get('chart.scale.decimals')), units_pre, units_post),'center', align, boxed);
}
}
}
/**
* Draw an X scale
*/
if (this.Get('chart.xscale')) {
var numXLabels = this.Get('chart.xscale.numlabels');
var interval = (this.canvas.width - this.gutterLeft - this.gutterRight) / numXLabels;
var y = this.canvas.height - this.gutterBottom + 5 + (text_size / 2);
var units_pre_x = this.Get('chart.xscale.units.pre');
var units_post_x = this.Get('chart.xscale.units.post');
if (!this.Get('chart.xmax')) {
var xmax = 0;
for (var ds=0; ds<this.data.length; ++ds) {
for (var point=0; point<this.data[ds].length; ++point) {
xmax = Math.max(xmax, this.data[ds][point][0]);
}
}
this.Set('chart.xmax', RGraph.getScale(xmax)[4]);
}
for (var i=0; i<numXLabels; ++i) {
var num = ( (this.Get('chart.xmax') - this.Get('chart.xmin')) * ((i+1) / numXLabels)) + this.Get('chart.xmin');
var x = this.gutterLeft + ((i+1) * interval);
if (typeof(this.Get('chart.xscale.formatter')) == 'function') {
var text = this.Get('chart.xscale.formatter')(this, num);
} else {
var text = RGraph.number_format(this,
num.toFixed(this.Get('chart.scale.decimals')),
units_pre_x,
units_post_x);
}
RGraph.Text(context, font, text_size, x, y, text, 'center', 'center');
}
/**
* Draw X labels
*/
} else {
// Put the text on the X axis
var graphArea = this.canvas.width - this.gutterLeft - this.gutterRight;
var xInterval = graphArea / this.Get('chart.labels').length;
var xPos = this.gutterLeft;
var yPos = (this.canvas.height - this.gutterBottom) + 15;
var labels = this.Get('chart.labels');
/**
* Text angle
*/
var angle = 0;
var valign = null;
var halign = 'center';
if (this.Get('chart.text.angle') > 0) {
angle = -1 * this.Get('chart.text.angle');
valign = 'center';
halign = 'right';
yPos -= 10;
}
for (i=0; i<labels.length; ++i) {
if (typeof(labels[i]) == 'object') {
if (this.Get('chart.labels.specific.align') == 'center') {
var rightEdge = 0;
if (labels[i+1] && labels[i+1][1]) {
rightEdge = labels[i+1][1];
} else {
rightEdge = this.Get('chart.xmax');
}
var offset = (rightEdge - labels[i][1]) / 2;
} else {
var offset = 0;
}
RGraph.Text(context,
font,
this.Get('chart.text.size'),
this.gutterLeft + (graphArea * ((labels[i][1] - xMin + offset) / (this.Get('chart.xmax') - xMin))) + 5,
yPos,
String(labels[i][0]),
valign,
angle != 0 ? 'right' : (this.Get('chart.labels.specific.align') == 'center' ? 'center' : 'left'),
null,
angle
);
/**
* Draw the gray indicator line
*/
this.context.beginPath();
this.context.strokeStyle = '#bbb';
this.context.moveTo(AA(this, this.gutterLeft + (graphArea * ((labels[i][1] - xMin)/ (this.Get('chart.xmax') - xMin)))), RGraph.GetHeight(this) - this.gutterBottom);
this.context.lineTo(AA(this, this.gutterLeft + (graphArea * ((labels[i][1] - xMin)/ (this.Get('chart.xmax') - xMin)))), RGraph.GetHeight(this) - this.gutterBottom + 20);
this.context.stroke();
} else {
RGraph.Text(context, font, this.Get('chart.text.size'), xPos + (this.xTickGap / 2), yPos, String(labels[i]), valign, halign, null, angle);
}
// Do this for the next time around
xPos += xInterval;
}
/**
* Draw the final indicator line
*/
if (typeof(labels[0]) == 'object') {
this.context.beginPath();
this.context.strokeStyle = '#bbb';
this.context.moveTo(this.gutterLeft + graphArea, RGraph.GetHeight(this) - this.gutterBottom);
this.context.lineTo(this.gutterLeft + graphArea, RGraph.GetHeight(this) - this.gutterBottom + 20);
this.context.stroke();
}
}
}
/**
* Draws the actual scatter graph marks
*
* @param i integer The dataset index
*/
RGraph.Scatter.prototype.DrawMarks = function (i)
{
/**
* Reset the coords array
*/
this.coords[i] = [];
/**
* Plot the values
*/
var xmax = this.Get('chart.xmax');
var default_color = this.Get('chart.defaultcolor');
for (var j=0; j<this.data[i].length; ++j) {
/**
* This is here because tooltips are optional
*/
var data_point = this.data[i];
var xCoord = data_point[j][0];
var yCoord = data_point[j][1];
var color = data_point[j][2] ? data_point[j][2] : default_color;
var tooltip = (data_point[j] && data_point[j][3]) ? data_point[j][3] : null;
this.DrawMark(
i,
xCoord,
yCoord,
xmax,
this.scale[4],
color,
tooltip,
this.coords[i],
data_point
);
}
}
/**
* Draws a single scatter mark
*/
RGraph.Scatter.prototype.DrawMark = function (index, x, y, xMax, yMax, color, tooltip, coords, data)
{
/**
* Inverted Y scale handling
*/
if (this.Get('chart.ylabels.invert')) {
if (typeof(y) == 'number') {
y = yMax - y;
}
}
var tickmarks = this.Get('chart.tickmarks');
var tickSize = this.Get('chart.ticksize');
var xMin = this.Get('chart.xmin');
var x = ((x - xMin) / (xMax - xMin)) * (this.canvas.width - this.gutterLeft - this.gutterRight);
var originalX = x;
var originalY = y;
/**
* This allows chart.tickmarks to be an array
*/
if (tickmarks && typeof(tickmarks) == 'object') {
tickmarks = tickmarks[index];
}
/**
* This allows chart.ticksize to be an array
*/
if (typeof(tickSize) == 'object') {
var tickSize = tickSize[index];
var halfTickSize = tickSize / 2;
} else {
var halfTickSize = tickSize / 2;
}
/**
* This bit is for boxplots only
*/
if ( typeof(y) == 'object'
&& typeof(y[0]) == 'number'
&& typeof(y[1]) == 'number'
&& typeof(y[2]) == 'number'
&& typeof(y[3]) == 'number'
&& typeof(y[4]) == 'number'
) {
var yMin = this.Get('chart.ymin') ? this.Get('chart.ymin') : 0;
this.Set('chart.boxplot', true);
this.graphheight = this.canvas.height - this.gutterTop - this.gutterBottom;
if (this.Get('chart.xaxispos') == 'center') {
this.graphheight /= 2;
}
var y0 = (this.graphheight) - ((y[4] - yMin) / (yMax - yMin)) * (this.graphheight);
var y1 = (this.graphheight) - ((y[3] - yMin) / (yMax - yMin)) * (this.graphheight);
var y2 = (this.graphheight) - ((y[2] - yMin) / (yMax - yMin)) * (this.graphheight);
var y3 = (this.graphheight) - ((y[1] - yMin) / (yMax - yMin)) * (this.graphheight);
var y4 = (this.graphheight) - ((y[0] - yMin) / (yMax - yMin)) * (this.graphheight);
/**
* Inverted labels
*/
if (this.Get('chart.ylabels.invert')) {
y0 = this.graphheight - y0;
y1 = this.graphheight - y1;
y2 = this.graphheight - y2;
y3 = this.graphheight - y3;
y4 = this.graphheight - y4;
}
var col1 = y[5];
var col2 = y[6];
// Override the boxWidth
if (typeof(y[7]) == 'number') {
var boxWidth = y[7];
}
var y = this.graphheight - y2;
} else {
var yMin = this.Get('chart.ymin') ? this.Get('chart.ymin') : 0;
var y = (( (y - yMin) / (yMax - yMin)) * (RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom));
}
/**
* Account for the X axis being at the centre
*/
if (this.Get('chart.xaxispos') == 'center') {
y /= 2;
y += this.halfGraphHeight;
}
// This is so that points are on the graph, and not the gutter
x += this.gutterLeft;
y = this.canvas.height - this.gutterBottom - y;
this.context.beginPath();
// Color
this.context.strokeStyle = color;
/**
* Boxplots
*/
if ( this.Get('chart.boxplot')
&& typeof(y0) == 'number'
&& typeof(y1) == 'number'
&& typeof(y2) == 'number'
&& typeof(y3) == 'number'
&& typeof(y4) == 'number'
) {
var boxWidth = boxWidth ? boxWidth : this.Get('chart.boxplot.width');
// boxWidth is now a scale value, so convert it to a pixel vlue
boxWidth = (boxWidth / this.Get('chart.xmax')) * (this.canvas.width -this.gutterLeft - this.gutterRight);
var halfBoxWidth = boxWidth / 2;
this.context.beginPath();
this.context.strokeRect(x - halfBoxWidth, y1 + this.gutterTop, boxWidth, y3 - y1);
// Draw the upper coloured box if a value is specified
if (col1) {
this.context.fillStyle = col1;
this.context.fillRect(x - halfBoxWidth, y1 + this.gutterTop, boxWidth, y2 - y1);
}
// Draw the lower coloured box if a value is specified
if (col2) {
this.context.fillStyle = col2;
this.context.fillRect(x - halfBoxWidth, y2 + this.gutterTop, boxWidth, y3 - y2);
}
this.context.stroke();
// Now draw the whiskers
this.context.beginPath();
if (this.Get('chart.boxplot.capped')) {
this.context.moveTo(x - halfBoxWidth, AA(this, y0 + this.gutterTop));
this.context.lineTo(x + halfBoxWidth, AA(this, y0 + this.gutterTop));
}
this.context.moveTo(AA(this, x), y0 + this.gutterTop);
this.context.lineTo(AA(this, x), y1 + this.gutterTop);
if (this.Get('chart.boxplot.capped')) {
this.context.moveTo(x - halfBoxWidth, AA(this, y4 + this.gutterTop));
this.context.lineTo(x + halfBoxWidth, AA(this, y4 + this.gutterTop));
}
this.context.moveTo(AA(this, x), y4 + this.gutterTop);
this.context.lineTo(AA(this, x), y3 + this.gutterTop);
this.context.stroke();
}
/**
* Draw the tickmark, but not for boxplots
*/
if (!y0 && !y1 && !y2 && !y3 && !y4) {
this.graphheight = this.canvas.height - this.gutterTop - this.gutterBottom;
if (tickmarks == 'circle') {
this.context.arc(x, y, halfTickSize, 0, 6.28, 0);
this.context.fillStyle = color;
this.context.fill();
} else if (tickmarks == 'plus') {
this.context.moveTo(x, y - halfTickSize);
this.context.lineTo(x, y + halfTickSize);
this.context.moveTo(x - halfTickSize, y);
this.context.lineTo(x + halfTickSize, y);
this.context.stroke();
} else if (tickmarks == 'square') {
this.context.strokeStyle = color;
this.context.fillStyle = color;
this.context.fillRect(
x - halfTickSize,
y - halfTickSize,
tickSize,
tickSize
);
//this.context.fill();
} else if (tickmarks == 'cross') {
this.context.moveTo(x - halfTickSize, y - halfTickSize);
this.context.lineTo(x + halfTickSize, y + halfTickSize);
this.context.moveTo(x + halfTickSize, y - halfTickSize);
this.context.lineTo(x - halfTickSize, y + halfTickSize);
this.context.stroke();
/**
* Diamond shape tickmarks
*/
} else if (tickmarks == 'diamond') {
this.context.fillStyle = this.context.strokeStyle;
this.context.moveTo(x, y - halfTickSize);
this.context.lineTo(x + halfTickSize, y);
this.context.lineTo(x, y + halfTickSize);
this.context.lineTo(x - halfTickSize, y);
this.context.lineTo(x, y - halfTickSize);
this.context.fill();
this.context.stroke();
/**
* Custom tickmark style
*/
} else if (typeof(tickmarks) == 'function') {
var graphWidth = RGraph.GetWidth(this) - this.gutterLeft - this.gutterRight
var xVal = ((x - this.gutterLeft) / graphWidth) * xMax;
var yVal = ((this.graphheight - (y - this.gutterTop)) / this.graphheight) * yMax;
tickmarks(this, data, x, y, xVal, yVal, xMax, yMax, color)
/**
* No tickmarks
*/
} else if (tickmarks == null) {
/**
* Unknown tickmark type
*/
} else {
alert('[SCATTER] (' + this.id + ') Unknown tickmark style: ' + tickmarks );
}
}
/**
* Add the tickmark to the coords array
*/
if ( this.Get('chart.boxplot')
&& typeof(y0) == 'number'
&& typeof(y1) == 'number'
&& typeof(y2) == 'number'
&& typeof(y3) == 'number'
&& typeof(y4) == 'number') {
x = [x - halfBoxWidth, x + halfBoxWidth];
y = [y0 + this.gutterTop, y1 + this.gutterTop, y2 + this.gutterTop, y3 + this.gutterTop, y4 + this.gutterTop];
}
coords.push([x, y, tooltip]);
}
/**
* Draws an optional line connecting the tick marks.
*
* @param i The index of the dataset to use
*/
RGraph.Scatter.prototype.DrawLine = function (i)
{
if (this.Get('chart.line') && this.coords[i].length >= 2) {
this.context.lineCap = 'round';
this.context.lineJoin = 'round';
this.context.lineWidth = this.GetLineWidth(i);// i is the index of the set of coordinates
this.context.strokeStyle = this.Get('chart.line.colors')[i];
this.context.beginPath();
var len = this.coords[i].length;
for (var j=0; j<this.coords[i].length; ++j) {
var xPos = this.coords[i][j][0];
var yPos = this.coords[i][j][1];
if (j == 0) {
this.context.moveTo(xPos, yPos);
} else {
// Stepped?
var stepped = this.Get('chart.line.stepped');
if ( (typeof(stepped) == 'boolean' && stepped)
|| (typeof(stepped) == 'object' && stepped[i])
) {
this.context.lineTo(this.coords[i][j][0], this.coords[i][j - 1][1]);
}
this.context.lineTo(xPos, yPos);
}
}
this.context.stroke();
}
/**
* Set the linewidth back to 1
*/
this.context.lineWidth = 1;
}
/**
* Returns the linewidth
*
* @param number i The index of the "line" (/set of coordinates)
*/
RGraph.Scatter.prototype.GetLineWidth = function (i)
{
var linewidth = this.Get('chart.line.linewidth');
if (typeof(linewidth) == 'number') {
return linewidth;
} else if (typeof(linewidth) == 'object') {
if (linewidth[i]) {
return linewidth[i];
} else {
return linewidth[0];
}
alert('[SCATTER] Error! chart.linewidth should be a single number or an array of one or more numbers');
}
}
/**
* Draws vertical bars. Line chart doesn't use a horizontal scale, hence this function
* is not common
*/
RGraph.Scatter.prototype.DrawVBars = function ()
{
var canvas = this.canvas;
var context = this.context;
var vbars = this.Get('chart.background.vbars');
var graphWidth = RGraph.GetWidth(this) - this.gutterLeft - this.gutterRight;
if (vbars) {
var xmax = this.Get('chart.xmax');
for (var i=0; i<vbars.length; ++i) {
var startX = ((vbars[i][0] / xmax) * graphWidth) + this.gutterLeft;
var width = (vbars[i][1] / xmax) * graphWidth;
context.beginPath();
context.fillStyle = vbars[i][2];
context.fillRect(startX, this.gutterTop, width, (RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom));
context.fill();
}
}
}
/**
* Draws in-graph labels.
*
* @param object obj The graph object
*/
RGraph.Scatter.prototype.DrawInGraphLabels = function (obj)
{
var canvas = obj.canvas;
var context = obj.context;
var labels = obj.Get('chart.labels.ingraph');
var labels_processed = [];
// Defaults
var fgcolor = 'black';
var bgcolor = 'white';
var direction = 1;
if (!labels) {
return;
}
/**
* Preprocess the labels array. Numbers are expanded
*/
for (var i=0; i<labels.length; ++i) {
if (typeof(labels[i]) == 'number') {
for (var j=0; j<labels[i]; ++j) {
labels_processed.push(null);
}
} else if (typeof(labels[i]) == 'string' || typeof(labels[i]) == 'object') {
labels_processed.push(labels[i]);
} else {
labels_processed.push('');
}
}
/**
* Turn off any shadow
*/
RGraph.NoShadow(obj);
if (labels_processed && labels_processed.length > 0) {
var i=0;
for (var set=0; set<obj.coords.length; ++set) {
for (var point = 0; point<obj.coords[set].length; ++point) {
if (labels_processed[i]) {
var x = obj.coords[set][point][0];
var y = obj.coords[set][point][1];
var length = typeof(labels_processed[i][4]) == 'number' ? labels_processed[i][4] : 25;
var text_x = x;
var text_y = y - 5 - length;
context.moveTo(x, y - 5);
context.lineTo(x, y - 5 - length);
context.stroke();
context.beginPath();
// This draws the arrow
context.moveTo(x, y - 5);
context.lineTo(x - 3, y - 10);
context.lineTo(x + 3, y - 10);
context.closePath();
context.beginPath();
// Fore ground color
context.fillStyle = (typeof(labels_processed[i]) == 'object' && typeof(labels_processed[i][1]) == 'string') ? labels_processed[i][1] : 'black';
RGraph.Text(context,
obj.Get('chart.text.font'),
obj.Get('chart.text.size'),
text_x,
text_y,
(typeof(labels_processed[i]) == 'object' && typeof(labels_processed[i][0]) == 'string') ? labels_processed[i][0] : labels_processed[i],
'bottom',
'center',
true,
null,
(typeof(labels_processed[i]) == 'object' && typeof(labels_processed[i][2]) == 'string') ? labels_processed[i][2] : 'white');
context.fill();
}
i++;
}
}
}
}
/**
* This function makes it much easier to get the (if any) point that is currently being hovered over.
*
* @param object e The event object
*/
RGraph.Scatter.prototype.getPoint = function (e)
{
var canvas = e.target;
var obj = canvas.__object__;
var context = obj.context;
var mouseXY = RGraph.getMouseXY(e);
var mouseX = mouseXY[0];
var mouseY = mouseXY[1];
var overHotspot = false;
var offset = obj.Get('chart.tooltips.hotspot'); // This is how far the hotspot extends
for (var set=0; set<obj.coords.length; ++set) {
for (var i=0; i<obj.coords[set].length; ++i) {
var xCoord = obj.coords[set][i][0];
var yCoord = obj.coords[set][i][1];
if (typeof(yCoord) == 'number') {
if (mouseX <= (xCoord + offset) &&
mouseX >= (xCoord - offset) &&
mouseY <= (yCoord + offset) &&
mouseY >= (yCoord - offset)) {
return [xCoord, yCoord, set, i, obj.data[set][i][3]];
}
} else {
var mark = obj.data[set][i];
/**
* Determine the width
*/
var width = obj.Get('chart.boxplot.width');
if (typeof(mark[1][7]) == 'number') {
width = mark[1][7];
}
if ( typeof(xCoord) == 'object'
&& mouseX > xCoord[0]
&& mouseX < xCoord[1]
&& mouseY < yCoord[3]
&& mouseY > yCoord[1]
) {
return [[xCoord[0], xCoord[1] - xCoord[0]], [yCoord[1], yCoord[3] - yCoord[1]], set, i, obj.data[set][i][3]];
}
}
}
}
}
/**
* Draws the above line labels
*/
RGraph.Scatter.prototype.DrawAboveLabels = function ()
{
var context = this.context;
var size = this.Get('chart.labels.above.size');
var font = this.Get('chart.text.font');
var units_pre = this.Get('chart.units.pre');
var units_post = this.Get('chart.units.post');
for (var set=0; set<this.coords.length; ++set) {
for (var point=0; point<this.coords[set].length; ++point) {
var x_val = this.data[set][point][0];
var y_val = this.data[set][point][1];
var x_pos = this.coords[set][point][0];
var y_pos = this.coords[set][point][1];
RGraph.Text(context,
font,
size,
x_pos,
y_pos - 5 - size,
x_val.toFixed(this.Get('chart.labels.above.decimals')) + ', ' + y_val.toFixed(this.Get('chart.labels.above.decimals')),
'center',
'center',
true,
null,
'rgba(255, 255, 255, 0.7)');
}
}
}