/**
    * 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':   'white',
            'chart.background.barcolor2':   'white',
            '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.grid.vlines': true,
            'chart.background.grid.hlines': true,
            'chart.background.grid.border': true,
            'chart.background.grid.autofit':false,
            'chart.background.grid.autofit.numhlines': 7,
            'chart.background.grid.autofit.numvlines': 20,
            'chart.text.size':              10,
            'chart.text.angle':             0,
            'chart.text.color':             'black',
            'chart.text.font':              'Verdana',
            'chart.tooltips.effect':         'fade',
            'chart.tooltips.hotspot':        3,
            'chart.tooltips.css.class':      'RGraph_tooltip',
            'chart.units.pre':              '',
            'chart.units.post':             '',
            'chart.tickmarks':              'cross',
            'chart.ticksize':               2,
            'chart.xticks':                 true,
            'chart.gutter':                 25,
            'chart.xmax':                   0,
            'chart.ymax':                   null,
            'chart.ymin':                   null,
            'chart.scale.decimals':         0,
            'chart.title':                  '',
            'chart.title.vpos':             null,
            'chart.title.xaxis':            '',
            'chart.title.yaxis':            '',
            'chart.title.xaxis.pos':        0.25,
            'chart.title.yaxis.pos':        0.25,
            'chart.labels':                 [],
            'chart.ylabels':                true,
            'chart.ylabels.count':          5,
            'chart.contextmenu':            null,
            'chart.defaultcolor':           'black',
            'chart.xaxispos':               'bottom',
            'chart.crosshairs':             false,
            'chart.crosshairs.color':       '#333',
            '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.shadow':             false,
            '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':            10,
            'chart.zoom.delay':             50,
            'chart.zoom.shadow':            true,
            'chart.zoom.mode':              'canvas',
            'chart.zoom.thumbnail.width':   75,
            'chart.zoom.thumbnail.height':  75,
            'chart.zoom.background':        true,
            'chart.zoom.action':            'zoom',
            'chart.boxplot.width':          8,
            'chart.resizable':              false
        }

        // 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;
        }

        // Check the common library has been included
        if (typeof(RGraph) == 'undefined') {
            alert('[SCATTER] Fatal error: The common library does not appear to have been included');
        }
    }


    /**
    * 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';
        }

        this.properties[name] = 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 ()
    {
        /**
        * Fire the onbeforedraw event
        */
        RGraph.FireCustomEvent(this, 'onbeforedraw');

        // 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 (!document.all) {
            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.max   = this.Get('chart.ymax');
            this.min   = this.Get('chart.ymin') ? this.Get('chart.ymin') : 0;
            this.scale = RGraph.getScale(this.max);

            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;
            }

            var decimals = this.Get('chart.scale.decimals');

            this.scale = [
                          this.scale[0].toFixed(decimals),
                          this.scale[1].toFixed(decimals),
                          this.scale[2].toFixed(decimals),
                          this.scale[3].toFixed(decimals),
                          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, Math.abs(this.data[i][j][1]));
                }
            }

            this.scale = RGraph.getScale(this.max);
            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;
            }
            
            var decimals = this.Get('chart.scale.decimals');

            this.scale = [
                          this.scale[0].toFixed(decimals),
                          this.scale[1].toFixed(decimals),
                          this.scale[2].toFixed(decimals),
                          this.scale[3].toFixed(decimals),
                          this.scale[4].toFixed(decimals)
                         ];
        }

        this.grapharea = this.canvas.height - (2 * this.Get('chart.gutter'));

        // 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);
        }

        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;

            this.canvas.onmousemove = function (e)
            {
                e = RGraph.FixEventObject(e);

                var canvas      = e.target;
                var obj         = canvas.__object__;
                var context     = canvas.getContext('2d');
                var mouseCoords = RGraph.getMouseXY(e);
                var overHotspot = false;

                /**
                * Now loop through each point comparing the coords
                */

                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];
                        var tooltip = obj.coords[set][i][2];

                        if (mouseCoords[0] <= (xCoord + offset) &&
                            mouseCoords[0] >= (xCoord - offset) &&
                            mouseCoords[1] <= (yCoord + offset) &&
                            mouseCoords[1] >= (yCoord - offset) &&
                            tooltip &&
                            tooltip.length > 0) {
        
                            overHotspot = true;
                            canvas.style.cursor = document.all ? 'hand' : 'pointer';
    
                            if (!RGraph.Registry.Get('chart.tooltip') || RGraph.Registry.Get('chart.tooltip').__text__ != tooltip) {
    
                                RGraph.Redraw();

                                /**
                                * Get the tooltip text
                                */
                                if (typeof(tooltip) == 'function') {
                                    var text = String(tooltip(i));
        
                                } else {
                                    var text = String(tooltip);
                                }

                                RGraph.Tooltip(canvas, text, e.pageX, e.pageY, i);
        
                                // Draw a circle around the mark
                                context.beginPath();
                                context.fillStyle = 'rgba(255,255,255,0.5)';
                                context.arc(xCoord, yCoord, 3, 0, 6.28, 0);
        
                                context.fill();
                            
                            }
                        }
                    }
                }

                /**
                * Reset the pointer
                */
                if (!overHotspot) {
                    canvas.style.cursor = 'default';
                }
            }

        // This resets the canvas events - getting rid of any installed event handlers
        } else {
            this.canvas.onmousemove = null;
        }
        
        
        /**
        * 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 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 = this.canvas.height - (this.Get('chart.gutter') * 2);
        var gutter      = this.Get('chart.gutter');

        context.beginPath();
        context.strokeStyle = this.Get('chart.axis.color');
        context.lineWidth   = 1;

        // Draw the Y axis
        context.moveTo(gutter, gutter);
        context.lineTo(gutter, this.canvas.height - gutter);
        
        // Draw the X axis
        if (this.Get('chart.xaxispos') == 'center') {
            this.context.moveTo(gutter, this.canvas.height / 2);
            this.context.lineTo(this.canvas.width - gutter, this.canvas.height / 2);
        } else {
            this.context.moveTo(gutter, this.canvas.height - gutter);
            this.context.lineTo(this.canvas.width - gutter, this.canvas.height - gutter);
        }

        // Draw the Y tickmarks
        for (y=gutter; y < this.canvas.height - gutter + (this.Get('chart.xaxispos') == 'center' ? 1 : 0) ; y+=(graphHeight / 5) / 2) {

            // This is here to accomodate the X axis being at the center
            if (y == (this.canvas.height / 2) ) continue;

            this.context.moveTo(gutter, y);
            this.context.lineTo(gutter - 3, y);
        }
        
        // Draw the X tickmarks
        if (this.Get('chart.xticks')) {
            var x             = 0;
            var y             =  (this.Get('chart.xaxispos') == 'center') ? (this.canvas.height / 2) : (this.canvas.height - gutter);
            this.xTickGap = (this.canvas.width - (2 * gutter) ) / this.Get('chart.labels').length;
    
            for (x = (gutter + (this.xTickGap / 2) ); x<=(this.canvas.width - gutter); x += this.xTickGap / 2) {
                this.context.moveTo(x, y - (this.Get('chart.xaxispos') == 'center' ? 3 : 0));
                this.context.lineTo(x, y + 3);
            }
    
        }

        this.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 xMax       = this.Get('chart.xmax');
        var yMax       = this.scale[4];
        var gutter     = this.Get('chart.gutter');
        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 context    = this.context;
        var canvas     = this.canvas;

            
        this.halfGraphHeight = (this.canvas.height - (2 * this.Get('chart.gutter'))) / 2;

        /**
        * Draw the Y yaxis labels, be it at the top or center
        */
        if (this.Get('chart.ylabels')) {
            if (this.Get('chart.xaxispos') == 'center') {
            
                // Draw the top halves labels
                RGraph.Text(context, font, text_size, gutter - 5, gutter, RGraph.number_format(this.scale[4], units_pre, units_post), 'center', 'right');
                
                
                if (numYLabels >= 5) {
                    RGraph.Text(context, font, text_size, gutter - 5, gutter + ((canvas.height - (2 * gutter)) * (1/10) ), RGraph.number_format(this.scale[3], units_pre, units_post), 'center', 'right');
                    RGraph.Text(context, font, text_size, gutter - 5, gutter + ((canvas.height - (2 * gutter)) * (3/10) ), RGraph.number_format(this.scale[1], units_pre, units_post), 'center', 'right');
                }
    
                if (numYLabels >= 3) {
                    RGraph.Text(context, font, text_size, gutter - 5, gutter + ((canvas.height - (2 * gutter)) * (2/10) ), RGraph.number_format(this.scale[2], units_pre, units_post), 'center', 'right');
                    RGraph.Text(context, font, text_size, gutter - 5, gutter + ((canvas.height - (2 * gutter)) * (4/10) ), RGraph.number_format(this.scale[0], units_pre, units_post), 'center', 'right');
                }
                
                // Draw the bottom halves labels
                if (numYLabels >= 3) {
                    RGraph.Text(context, font, text_size, gutter - 5, gutter + ((canvas.height - (2 * gutter)) * (1/10) ) + this.halfGraphHeight, '-' + RGraph.number_format(this.scale[0], units_pre, units_post), 'center', 'right');
                    RGraph.Text(context, font, text_size, gutter - 5, gutter + ((canvas.height - (2 * gutter)) * (3/10) ) + this.halfGraphHeight, '-' + RGraph.number_format(this.scale[2], units_pre, units_post), 'center', 'right');
                }
    
                if (numYLabels >= 5) {
                    RGraph.Text(context, font, text_size, gutter - 5, gutter + ((canvas.height - (2 * gutter)) * (2/10) ) + this.halfGraphHeight, '-' + RGraph.number_format(this.scale[1], units_pre, units_post), 'center', 'right');
                    RGraph.Text(context, font, text_size, gutter - 5, gutter + ((canvas.height - (2 * gutter)) * (4/10) ) + this.halfGraphHeight, '-' + RGraph.number_format(this.scale[3], units_pre, units_post), 'center', 'right');
                }
    
                RGraph.Text(context, font, text_size, gutter - 5, gutter + ((canvas.height - (2 * gutter)) * (5/10) ) + this.halfGraphHeight, '-' + RGraph.number_format(this.scale[4], units_pre, units_post), 'center', 'right');
    
            } else {
    
                RGraph.Text(context, font, text_size, gutter - 5, gutter, RGraph.number_format(this.scale[4], units_pre, units_post), 'center', 'right');

                if (numYLabels >= 5) {
                    RGraph.Text(context, font, text_size, gutter - 5, gutter + ((canvas.height - (2 * gutter)) * (1/5) ), RGraph.number_format(this.scale[3], units_pre, units_post), 'center', 'right');
                    RGraph.Text(context, font, text_size, gutter - 5, gutter + ((canvas.height - (2 * gutter)) * (3/5) ), RGraph.number_format(this.scale[1], units_pre, units_post), 'center', 'right');
                }

                if (numYLabels >= 3) {
                    RGraph.Text(context, font, text_size, gutter - 5, gutter + ((canvas.height - (2 * gutter)) * (2/5) ), RGraph.number_format(this.scale[2], units_pre, units_post), 'center', 'right');
                    RGraph.Text(context, font, text_size, gutter - 5, gutter + ((canvas.height - (2 * gutter)) * (4/5) ), RGraph.number_format(this.scale[0], units_pre, units_post), 'center', 'right');
                }
                
                if (this.Get('chart.ymin')) {
                    RGraph.Text(context, font, text_size, gutter - 5, canvas.height - gutter, RGraph.number_format(this.Get('chart.ymin'), units_pre, units_post), 'center', 'right');
                }
            }
        }
        
        // Put the text on the X axis
        var graphArea = this.canvas.width - (2 * gutter);
        var xInterval = graphArea / this.Get('chart.labels').length;
        var xPos      = gutter;
        var yPos      = (this.canvas.height - gutter) + 15;
        var labels    = this.Get('chart.labels');

        /**
        * Text angle
        */
        var angle  = 0;
        var valign = null;
        var halign = 'center';

        if (this.Get('chart.text.angle') == 45 || this.Get('chart.text.angle') == 90) {
            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') {
            
                RGraph.Text(context, font, this.Get('chart.text.size'), gutter + (graphArea * (labels[i][1] / this.Get('chart.xmax'))) + 5, yPos, String(labels[i][0]), valign, 'left', null, angle);
                
                /**
                * Draw the gray indicator line
                */
                this.context.beginPath();
                    this.context.strokeStyle = '#bbb';
                    this.context.moveTo(gutter + (graphArea * (labels[i][1] / this.Get('chart.xmax'))), this.canvas.height - gutter);
                    this.context.lineTo(gutter + (graphArea * (labels[i][1] / this.Get('chart.xmax'))), this.canvas.height - gutter + 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;
        }
    }


    /**
    * 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(
                          xCoord,
                          yCoord,
                          xmax,
                          this.scale[4],
                          color,
                          tooltip,
                          this.coords[i]
                         );
        }
    }


    /**
    * Draws a single scatter mark
    */
    RGraph.Scatter.prototype.DrawMark = function (x, y, xMax, yMax, color, tooltip, coords)
    {
        var tickmarks = this.Get('chart.tickmarks');
        var gutter    = this.Get('chart.gutter');
        var x = (x / xMax) * (this.canvas.width - (2 * gutter));
        var tickSize = this.Get('chart.ticksize');
        var halfTickSize = this.Get('chart.ticksize') / 2;
        var originalX = x;
        var originalY = y;

        /**
        * 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);

            var y0 = (this.canvas.height - (2 * gutter)) - ((y[4] - yMin) / (yMax - yMin)) * (this.canvas.height - (2 * gutter));
            var y1 = (this.canvas.height - (2 * gutter)) - ((y[3] - yMin) / (yMax - yMin)) * (this.canvas.height - (2 * gutter));
            var y2 = (this.canvas.height - (2 * gutter)) - ((y[2] - yMin) / (yMax - yMin)) * (this.canvas.height - (2 * gutter));
            var y3 = (this.canvas.height - (2 * gutter)) - ((y[1] - yMin) / (yMax - yMin)) * (this.canvas.height - (2 * gutter));
            var y4 = (this.canvas.height - (2 * gutter)) - ((y[0] - yMin) / (yMax - yMin)) * (this.canvas.height - (2 * gutter));

            var col1  = y[5];
            var col2  = y[6];

            // Override the boxWidth
            if (typeof(y[7]) == 'number') {
                var boxWidth = y[7];
            }
            
            var y = y2;

        } else {
            var yMin = this.Get('chart.ymin') ? this.Get('chart.ymin') : 0;
            var y = (( (y - yMin) / (yMax - yMin)) * (this.canvas.height - (2 * gutter)));
        }

        /**
        * 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 += gutter;
        y = this.canvas.height - gutter - 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');
            var halfBoxWidth = boxWidth / 2;

            this.context.beginPath();

            // Draw the upper coloured box if a value is specified
            if (col1) {
                this.context.fillStyle = col1;
                this.context.fillRect(x - halfBoxWidth, y1 + gutter, 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 + gutter, boxWidth, y3 - y2);
            }

            this.context.strokeRect(x - halfBoxWidth, y1 + gutter, boxWidth, y3 - y1);
            this.context.stroke();

            // Now draw the whiskers
            this.context.beginPath();
            this.context.moveTo(x - halfBoxWidth, y0 + gutter);
            this.context.lineTo(x + halfBoxWidth, y0 + gutter);

            this.context.moveTo(x, y0 + gutter);
            this.context.lineTo(x, y1 + gutter);

            this.context.moveTo(x - halfBoxWidth, y4 + gutter);
            this.context.lineTo(x + halfBoxWidth, y4 + gutter);

            this.context.moveTo(x, y4 + gutter);
            this.context.lineTo(x, y3 + gutter);

            this.context.stroke();
        }


        /**
        * Draw the tickmark
        */
        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,
                                  this.Get('chart.ticksize'),
                                  this.Get('chart.ticksize')
                                 );
            //this.context.fill();

        } else if (tickmarks == 'cross') {
            var ticksize = this.Get('chart.ticksize');

            this.context.moveTo(x - ticksize, y - ticksize);
            this.context.lineTo(x + ticksize, y + ticksize);
            this.context.moveTo(x + ticksize, y - ticksize);
            this.context.lineTo(x - ticksize, y + ticksize);
            
            this.context.stroke();
        
        // Diamon shape tickmarks
         } else if (tickmarks == 'diamond') {
            this.context.fillStyle = this.context.strokeStyle;
            var ticksize = this.Get('chart.ticksize');
            var halfTicksize = ticksize / 2;

            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();

        // 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
        */
        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');
        }
    }