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kggraphs-beforeaxes-labels.js
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kggraphs-beforeaxes-labels.js
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/*
author: kaushik ganguly
email; kgsnipes@gmail.com
*/
//this is a utility to have Object.create() work on browsers that do not support
if(typeof Object.create !=='function'){
Object.create=function(obj){
function F(){};
f.prototype=obj;
return new F();
};
}
(function( $ ,window, document,undefined){
var kgg={
init:function(options,elem)
{
self=this;
self.obj=self;
self.$elem=$(elem);
self.$elem.css({'padding':'10px'});
self.options=$.extend({},$.fn.kggraph.options,options);
self.clear();
self.$canvas=document.createElement("canvas");
self.$elem.width(self.options.width);
self.$elem.height(self.options.height);
$(self.$canvas).appendTo(self.$elem);
$(self.$canvas).css({'border':'1px solid #e1e8f8','margin-top':'10px','margin-bottom':'10px'});
self.$elem.css({'border':'3px dashed #eee','margin':'10px','overflow':'auto'});
$(self.$canvas).attr('width',self.options.width);
$(self.$canvas).attr('height',self.options.height);
if(self.options.type=='pie chart')
{
self.drawPieChart(self.options.data);
}
else if(self.options.type=='point chart' && !self.options.hasTrends)
{
self.drawPointChart(self.options.data);
}
else if(self.options.type=='point chart' && self.options.hasTrends)
{
self.drawPointChartWithTrends(self.options.data);
}
},
clearCanvas:function()
{
self=this;
//console.log("hello");
$(self.$canvas).css({'border':'1px solid green'});
self.$canvas.getContext('2d').clearRect(0, 0, self.options.width, self.options.height);
},
clear:function()
{
self=this;
self.$elem.empty();
},
randomColor:function(){
return '#'+(0x1000000+(Math.random())*0xffffff).toString(16).substr(1,6);
/*var r = function () { return Math.floor(Math.random()*256) };
return "rgba(" + r() + "," + r() + "," + r() + ",1.0)";
*/
},
colorShades:function(constantPart,len)
{
var retVal=new Array();
//var rgba_arr=self.replace(self.replace(self.replace(rgba,"rgba",""),"(",""),")","").split(",");
var increment=16;
var opacity=1.0;
var level=64;
var temp='rgba(0,0,0,1.0)';
for(i=0;i<len;i++)
{
if(level<=256)
{
var rgba_arr=self.replace(self.replace(self.replace(temp,"rgba",""),"(",""),")","").split(",");
if(constantPart==1)
{
temp="rgba("+(parseFloat(rgba_arr[0])+level)+",0,0,1.0)";
//temp="rgba("+parseFloat(rgba_arr[0])+","+parseFloat(rgba_arr[1])+","+parseFloat(rgba_arr[2])+","+opacity.toFixed(1)+")";
}
else if(constantPart==2)
{
temp="rgba(0,"+(parseFloat(rgba_arr[1])+level)+",0,1.0)";
// temp="rgba("+parseFloat(rgba_arr[0])+",0.0,0.0,"+opacity+")";
}
else if(constantPart==3)
{
temp="rgba(0,0,"+(parseFloat(rgba_arr[2])+level)+",1.0)";
// temp="rgba("+parseFloat(rgba_arr[0])+",0.0,0.0,"+opacity+")";
}
level+=32;
}
else
{
var rgba_arr=self.replace(self.replace(self.replace(temp,"rgba",""),"(",""),")","").split(",");
if(constantPart==1)
{
temp="rgba("+parseFloat(rgba_arr[0])+","+(parseFloat(rgba_arr[1])+increment)+","+(parseFloat(rgba_arr[2])+increment)+",1.0)";
//temp="rgba("+parseFloat(rgba_arr[0])+","+parseFloat(rgba_arr[1])+","+parseFloat(rgba_arr[2])+","+opacity.toFixed(1)+")";
}
else if(constantPart==2)
{
temp="rgba("+parseFloat(rgba_arr[0]+increment)+","+(parseFloat(rgba_arr[1]))+","+(parseFloat(rgba_arr[2])+increment)+",1.0)";
// temp="rgba("+parseFloat(rgba_arr[0])+",0.0,0.0,"+opacity+")";
}
else if(constantPart==3)
{
temp="rgba("+parseFloat(rgba_arr[0]+increment)+","+(parseFloat(rgba_arr[1])+increment)+","+(parseFloat(rgba_arr[2]))+",1.0)";
// temp="rgba("+parseFloat(rgba_arr[0])+",0.0,0.0,"+opacity+")";
}
//opacity-=0.20;
increment+=32;
}
retVal.push(temp);
}
//console.log(retVal);
return retVal;
},
trim:function(s){
var l=0; var r=s.length -1;
while(l < s.length && s[l] == ' ')
{ l++; }
while(r > l && s[r] == ' ')
{ r-=1; }
return s.substring(l, r+1);
},
replace:function(str,replace_this,replace_with){
while(str.indexOf(replace_this) > -1){
str = str.replace(replace_this,replace_with);
}
return str;
},
sum:function(vals)
{
var s=0.0;
$.each(vals,function()
{
s+=this;
});
return s;
},
max:function(vals)
{
var v=vals[0];
for(i=0;i<vals.length;i++)
{
if(vals[i]>v)
{
v=vals[i];
}
}
return v;
},
min:function(vals)
{
var v=vals[0];
for(i=0;i<vals.length;i++)
{
if(vals[i]<v)
{
v=vals[i];
}
}
return v;
},
vfd:function(val)//value for drawing
{
return Math.floor(val);
//return val;
},
percent:function(val,percent,isvfd)
{
var v=0;
if(val>0)
{
v=val*(percent/100.0);
}
if(isvfd)
{
v=self.vfd(v);
}
return v;
},
percentage:function(sum,val,isvfd){
var v=0;
if(sum>0 && sum>=val)
{
if(val==0)
{
return 0;
}
else
{
v=(val*100)/sum;
if(isvfd)
{
v=self.vfd(v);
}
return v;
}
}
else
{
return 0;
}
},
XYForCanvas:function(percentage)
{
self=this;
var X=0;
var Y=0;
if(self.options.width>0 && self.options.height>0)
{
X=self.vfd(self.options.width*(percentage/100.0));
Y=self.vfd(self.options.height*(percentage/100.0));
}
return {'x':X,'y':Y};
},
containsElement:function (arr, ele) {
var found = false, index = 0;
while(!found && index < arr.length)
if(arr[index] == ele)
found = true;
else
index++;
return found;
},
getColors:function(length)
{
var arr=new Array();
for(i=0;i<length;i++)
{
var color='';
do
{
color=self.randomColor();
}while(self.containsElement(arr,color));
arr.push(color);
}
return arr;
},
drawPieChart:function(data) {
//console.log("drawing it");
if(self.options.width>self.options.height)
{
self.options.width=self.options.height;
self.$elem.width(self.options.width);
self.$elem.height(self.options.height);
$(self.$canvas).attr('width',self.options.width);
$(self.$canvas).attr('height',self.options.height);
}
var canvas=self.$canvas;
var ctx = canvas.getContext('2d');
var midPoint=self.XYForCanvas(50);
var onePercentDegree=self.percent(360,1,false);
var valArr=new Array();
for(i=0;i<data.length;i++)
{
valArr.push(data[i][1]);
}
var sum=self.sum(valArr);
//console.log(sum);
var piBy180 = 3.14 / 180;
var startDegree=0;
var endDegree=0;
var colors;
if(self.options.colors && self.options.colors.length>0)
{
colors=self.options.colors;
}
else
{
//colors=self.getColors(valArr.length);
if(self.options.useRGBAColorScheme)
{
colors=self.colorShades(3,valArr.length);
}
else
{
colors=self.getColors(valArr.length);
}
}
for (i = 0; i < valArr.length; i++) {
if(valArr[i]>0)
{
endDegree = startDegree + self.percentage(sum,valArr[i],false)* onePercentDegree;
ctx.strokeStyle = colors[i];
ctx.lineWidth = 5;
var radius = self.vfd(self.percent(self.options.width,90,true)*0.5);
while (radius >= 0) {
ctx.beginPath();
ctx.arc(midPoint.x, midPoint.y, radius, startDegree * piBy180, endDegree * piBy180, false);
ctx.stroke();
ctx.closePath();
radius -= 1;
}
startDegree = endDegree;
}
}
self.drawLegendForPieChart(colors);
},
drawLegendForPieChart:function(colors)
{
self=this;
$("<label>"+self.options.title+"</label>").insertBefore(self.$elem.children("canvas")[0]);
var htmlStr="<table>";
var data=self.options.data;
htmlStr+="<tr>";
if(self.options.columnTitles && self.options.columnTitles.length==2)
{
htmlStr+="<td> ";
htmlStr+="</td>";
htmlStr+="<td> "+self.options.columnTitles[0];
htmlStr+="</td>";
htmlStr+="<td> "+self.options.columnTitles[1];
htmlStr+="</td>";
}
/*else
{
htmlStr+="<td>(X - axis)";
htmlStr+="</td>";
htmlStr+="<td>(Y - axis)";
htmlStr+="</td>";
}*/
htmlStr+="</tr>";
for(i=0;i<data.length;i++)
{
htmlStr+="<tr>";
htmlStr+="<td style=\"background-color:"+colors[i]+"\"> ";
htmlStr+="</td>";
htmlStr+="<td> <a class=\"graph_section_"+i+"\">"+data[i][0];
htmlStr+="</a></td>";
htmlStr+="<td>("+data[i][1]+")";
htmlStr+="</td>";
htmlStr+="</tr>";
}
htmlStr+="</table>";
$(htmlStr).appendTo(self.$elem);
//self.$elem.children("table").css({'margin':'0 auto'});
self.$elem.children("table").css({'margin':'10px'});
self.$elem.children("label").css({'margin':'10px'});
self.$elem.width();
self.$elem.height(self.$elem.height()+self.$elem.children("table").height()+(self.$elem.children("label").height()*2));
},
drawPointChart:function(data)
{
var canvas=self.$canvas;
var ctx = canvas.getContext('2d');
var xvals=new Array();
var yvals=new Array();
for(i=0;i<data.length;i++)
{
xvals.push(data[i][0]);
yvals.push(data[i][1]);
}
//xvals=xvals.reverse();
//yvals=yvals.reverse();
var xmax=self.max(xvals);
xmax=xmax+self.percent(xmax,10,false);
var ymax=self.max(yvals);
ymax=ymax+self.percent(ymax,10,false);
var xorigin=self.vfd(self.options.width*0.10);
var yorigin=self.vfd(self.options.height*0.90);
// console.log("xorigin :"+xorigin+" yorigin:"+yorigin);
var ylength=self.vfd(self.options.height*0.90)-self.vfd(self.options.height*0.10);
var xlength=self.vfd(self.options.width*0.90)-self.vfd(self.options.width*0.10);
// console.log("xlength :"+xlength+" ylength:"+ylength);
// console.log("xmax :"+xmax+" ymax:"+ymax);
// drawing the axes
ctx.strokeStyle = '#396bd5';
ctx.beginPath();
ctx.moveTo(self.vfd(self.options.width*0.10), self.vfd(self.options.height*0.90));
ctx.lineTo(self.vfd(self.options.width*0.90), self.vfd(self.options.height*0.90));
ctx.moveTo(self.vfd(self.options.width*0.10), self.vfd(self.options.height*0.90));
ctx.lineTo(self.vfd(self.options.width*0.10), self.vfd(self.options.height*0.10));
ctx.stroke();
ctx.closePath();
// drawing the axes
//paint origin
ctx.beginPath();
ctx.fillText('0', xorigin - 10, yorigin+10);
ctx.stroke();
ctx.closePath();
if(self.options.colors && self.options.colors.length>0)
{
colors=self.options.colors;
}
else
{
if(self.options.useRGBAColorScheme)
{
colors=self.colorShades(3,data.length);
}
else
{
colors=self.getColors(data.length);
}
}
//draw grids if requested
if(self.options.useGrids)
{
var labelx=xorigin+self.percent(xlength,10,true);
var labely=yorigin-self.percent(ylength,10,true);
var count=0;
for(i=self.percent(xmax,10,false);i<=xmax;i+=self.percent(xmax,10,false))
{
ctx.strokeStyle = '#eeeeee';
ctx.beginPath();
ctx.moveTo(labelx, yorigin);
ctx.lineTo(labelx, self.vfd(self.options.height*0.10));
ctx.stroke();
ctx.closePath();
labelx+=self.percent(xlength,10,true);
count++;
}
if(count<10)
{
ctx.strokeStyle = '#eeeeee';
ctx.beginPath();
ctx.moveTo(labelx, yorigin);
ctx.lineTo(labelx, self.vfd(self.options.height*0.10));
ctx.stroke();
ctx.closePath();
}
count=0;
for(i=self.percent(ymax,10,false);i<=ymax;i+=self.percent(ymax,10,false))
{
ctx.strokeStyle = '#eeeeee';
ctx.beginPath();
ctx.moveTo(xorigin, labely);
ctx.lineTo(self.vfd(self.options.width*0.90), labely);
ctx.stroke();
ctx.closePath();
labely-=self.percent(ylength,10,true);
count++;
}
if(count<10)
{
ctx.strokeStyle = '#eeeeee';
ctx.beginPath();
ctx.moveTo(xorigin, labely);
ctx.lineTo(self.vfd(self.options.width*0.90), labely);
ctx.stroke();
ctx.closePath();
}
}
//label the axes
var labelx=xorigin+self.percent(xlength,10,true);
var labely=yorigin-self.percent(ylength,10,true);
var count=0;
for(i=self.percent(xmax,10,false);i<=xmax;i+=self.percent(xmax,10,false))
{
ctx.fillStyle = '#396bd5';
ctx.beginPath();
ctx.fillText(i.toFixed(2).toString(), labelx, yorigin+15);
ctx.stroke();
ctx.closePath();
ctx.beginPath();
ctx.fillRect(labelx-2, yorigin-2,4,4);
ctx.stroke();
ctx.closePath();
labelx+=self.percent(xlength,10,true);
count++;
}
if(count<10)
{
ctx.fillStyle = '#396bd5';
ctx.beginPath();
ctx.fillText(xmax.toFixed(2).toString(), labelx, yorigin+15);
ctx.stroke();
ctx.closePath();
ctx.beginPath();
ctx.fillRect(labelx-2, yorigin-2,4,4);
ctx.stroke();
ctx.closePath();
}
count=0;
for(i=self.percent(ymax,10,false);i<=ymax;i+=self.percent(ymax,10,false))
{
ctx.fillStyle = '#396bd5';
ctx.beginPath();
ctx.fillText(i.toFixed(2).toString(), xorigin-(i.toFixed(2).toString().length*6), labely+5);
ctx.stroke();
ctx.closePath();
ctx.beginPath();
ctx.fillRect(xorigin-2, labely-2,4,4);
ctx.stroke();
ctx.closePath();
labely-=self.percent(ylength,10,true);
++count;
}
if(count<10)
{
ctx.fillStyle = '#396bd5';
ctx.beginPath();
ctx.fillText(ymax.toFixed(2).toString(), xorigin-(i.toFixed(2).toString().length*6), labely+5);
ctx.stroke();
ctx.closePath();
ctx.beginPath();
ctx.fillRect(xorigin-2, labely-2,4,4);
ctx.stroke();
ctx.closePath();
}
var plotxy=new Array();
if(self.options.connectPointsWithOrigin)
{
plotxy.push(xorigin+","+yorigin);
}
//plot points
for (i = 0; i < data.length; i++) {
ctx.fillStyle = colors[i];
var xvalPercentage=self.percentage(xmax,xvals[i],false);
var yvalPercentage=self.percentage(ymax,yvals[i],false);
var xper=self.percent(xlength,xvalPercentage,true);
var yper=self.percent(ylength,yvalPercentage,true);
var x=xorigin+xper ;
var y=yorigin-yper;
ctx.beginPath();
ctx.fillRect(x, y, 10, 10);
//console.log(x+","+y)
plotxy.push(x+","+y);
ctx.closePath();
}
//connect the points
if(self.options.connectPoints)
{
var connectColor=self.getColors(1)[0];
if(plotxy.length==1)
{
}
else if(plotxy.length==2)
{
var coor=plotxy[0].split(",");
var coor1=plotxy[1].split(",");
ctx.strokeStyle = connectColor;
ctx.beginPath();
ctx.moveTo(parseInt(coor[0]), parseInt(coor[1]));
ctx.lineTo(parseInt(coor1[0]), parseInt(coor1[1]));
ctx.stroke();
ctx.closePath();
}
else if(plotxy.length>=3)
{
for (i = 0; i <(plotxy.length-1); i++) {
//console.log(plotxy[i]+" "+plotxy[i+1]);
var coor=plotxy[i].split(",");
var coor1=plotxy[i+1].split(",");
ctx.strokeStyle = connectColor;
ctx.beginPath();
ctx.moveTo(parseInt(coor[0]), parseInt(coor[1]));
ctx.lineTo(parseInt(coor1[0]), parseInt(coor1[1]));
ctx.stroke();
ctx.closePath();
}
var coor=plotxy[plotxy.length-2].split(",");
var coor1=plotxy[plotxy.length-1].split(",");
ctx.strokeStyle =connectColor;
ctx.beginPath();
ctx.moveTo(parseInt(coor[0]), parseInt(coor[1]));
ctx.lineTo(parseInt(coor1[0]), parseInt(coor1[1]));
ctx.stroke();
ctx.closePath();
}
}
self.drawLegendForPointChart(colors);
},
drawLegendForPointChart:function(colors)
{
self=this;
//self.$elem.css({'border':'1px solid #ccc','margin':'10px','overflow':'auto'});
$("<label>"+self.options.title+"</label>").insertBefore(self.$elem.children("canvas")[0]);
var htmlStr="<table>";
var data=self.options.data;
htmlStr+="<tr>";
htmlStr+="<td> ";
htmlStr+="</td>";
if(self.options.columnTitles && self.options.columnTitles.length==2)
{
htmlStr+="<td>(X - axis)</br>"+self.options.columnTitles[0];
htmlStr+="</td>";
htmlStr+="<td>(Y - axis)</br>"+self.options.columnTitles[1];
htmlStr+="</td>";
}
else
{
htmlStr+="<td>(X - axis)";
htmlStr+="</td>";
htmlStr+="<td>(Y - axis)";
htmlStr+="</td>";
}
htmlStr+="</tr>";
for(i=0;i<data.length;i++)
{
htmlStr+="<tr>";
htmlStr+="<td style=\"background-color:"+colors[i]+"\"> ";
htmlStr+="</td>";
htmlStr+="<td> "+data[i][0]+"";
htmlStr+="</td>";
htmlStr+="<td> "+data[i][1]+"";
htmlStr+="</td>";
htmlStr+="</tr>";
}
htmlStr+="</table>";
$(htmlStr).appendTo(self.$elem);
//self.$elem.children("table").css({'margin':'0 auto'});
self.$elem.children("table").css({'margin':'10px'});
self.$elem.children("label").css({'margin':'10px'});
self.$elem.width();
self.$elem.height(self.$elem.height()+self.$elem.children("table").height()+(self.$elem.children("label").height()*2));
},
drawPointChartWithTrends:function(data)
{
var canvas=self.$canvas;
var ctx = canvas.getContext('2d');
var xvals=new Array();
var yvals=new Array();
for(i=0;i<data.length;i++)
{
for(j=0;j<data[i].length;j++)
{
xvals.push(data[i][j][0]);
yvals.push(data[i][j][1]);
}
}
var xmax=self.max(xvals);
xmax=xmax+self.percent(xmax,10,false);
var ymax=self.max(yvals);
ymax=ymax+self.percent(ymax,10,false);
//console.log("xmax :"+xmax+" ymax :"+ymax);
var xorigin=self.vfd(self.options.width*0.10);
var yorigin=self.vfd(self.options.height*0.90);
// console.log("xorigin :"+xorigin+" yorigin:"+yorigin);
var ylength=self.vfd(self.options.height*0.90)-self.vfd(self.options.height*0.10);
var xlength=self.vfd(self.options.width*0.90)-self.vfd(self.options.width*0.10);
// console.log("xlength :"+xlength+" ylength:"+ylength);
// console.log("xmax :"+xmax+" ymax:"+ymax);
// drawing the axes
ctx.strokeStyle = '#396bd5';
ctx.beginPath();
ctx.moveTo(self.vfd(self.options.width*0.10), self.vfd(self.options.height*0.90));
ctx.lineTo(self.vfd(self.options.width*0.90), self.vfd(self.options.height*0.90));
ctx.moveTo(self.vfd(self.options.width*0.10), self.vfd(self.options.height*0.90));
ctx.lineTo(self.vfd(self.options.width*0.10), self.vfd(self.options.height*0.10));
ctx.stroke();
ctx.closePath();
// drawing the axes
//paint origin
ctx.beginPath();
ctx.fillText('0', xorigin - 10, yorigin+10);
ctx.stroke();
ctx.closePath();
if(self.options.colors && self.options.colors.length>0)
{
colors=self.options.colors;
}
else
{
//colors=self.getColors(valArr.length);
if(self.options.useRGBAColorScheme)
{
colors=self.colorShades(3,xvals.length);
}
else
{
colors=self.getColors(xvals.length);
}
}
//draw grids if requested
if(self.options.useGrids)
{
var labelx=xorigin+self.percent(xlength,10,true);
var labely=yorigin-self.percent(ylength,10,true);
var count=0;
for(i=self.percent(xmax,10,false);i<=xmax;i+=self.percent(xmax,10,false))
{
ctx.strokeStyle = '#eeeeee';
ctx.beginPath();
ctx.moveTo(labelx, yorigin);
ctx.lineTo(labelx, self.vfd(self.options.height*0.10));
ctx.stroke();
ctx.closePath();
labelx+=self.percent(xlength,10,true);
count++;
}
if(count<10)
{
ctx.strokeStyle = '#eeeeee';
ctx.beginPath();
ctx.moveTo(labelx, yorigin);
ctx.lineTo(labelx, self.vfd(self.options.height*0.10));
ctx.stroke();
ctx.closePath();
}
count=0;
for(i=self.percent(ymax,10,false);i<=ymax;i+=self.percent(ymax,10,false))
{
ctx.strokeStyle = '#eeeeee';
ctx.beginPath();
ctx.moveTo(xorigin, labely);
ctx.lineTo(self.vfd(self.options.width*0.90), labely);
ctx.stroke();
ctx.closePath();
labely-=self.percent(ylength,10,true);
count++;
}
if(count<10)
{
ctx.strokeStyle = '#eeeeee';
ctx.beginPath();
ctx.moveTo(xorigin, labely);
ctx.lineTo(self.vfd(self.options.width*0.90), labely);
ctx.stroke();
ctx.closePath();
}
}
//label the axes
var labelx=xorigin+self.percent(xlength,10,true);
var labely=yorigin-self.percent(ylength,10,true);
var count=0;
for(i=self.percent(xmax,10,false);i<=xmax;i+=self.percent(xmax,10,false))
{
ctx.fillStyle = '#396bd5';
ctx.beginPath();
ctx.fillText(i.toFixed(2).toString(), labelx, yorigin+15);
ctx.stroke();
ctx.closePath();
ctx.beginPath();
ctx.fillRect(labelx-2, yorigin-2,4,4);
ctx.stroke();
ctx.closePath();
labelx+=self.percent(xlength,10,true);
count++;
}
if(count<10)
{
ctx.fillStyle = '#396bd5';
ctx.beginPath();
ctx.fillText(xmax.toFixed(2).toString(), labelx, yorigin+15);
ctx.stroke();
ctx.closePath();
ctx.beginPath();
ctx.fillRect(labelx-2, yorigin-2,4,4);
ctx.stroke();
ctx.closePath();
}
count=0;
for(i=self.percent(ymax,10,false);i<=ymax;i+=self.percent(ymax,10,false))
{
ctx.fillStyle = '#396bd5';
ctx.beginPath();
ctx.fillText(i.toFixed(2).toString(), xorigin-(i.toFixed(2).toString().length*6), labely+5);
ctx.stroke();
ctx.closePath();
ctx.beginPath();
ctx.fillRect(xorigin-2, labely-2,4,4);
ctx.stroke();
ctx.closePath();
labely-=self.percent(ylength,10,true);
++count;
}
if(count<10)
{
ctx.fillStyle = '#396bd5';
ctx.beginPath();
ctx.fillText(ymax.toFixed(2).toString(), xorigin-(i.toFixed(2).toString().length*6), labely+5);
ctx.stroke();
ctx.closePath();
ctx.beginPath();
ctx.fillRect(xorigin-2, labely-2,4,4);
ctx.stroke();
ctx.closePath();
}
var plotxy=new Array();
//plot points
for (i = 0; i < data.length; i++) {
var plotthis=new Array();
if(self.options.connectPointsWithOrigin)
{
plotthis.push(xorigin+","+yorigin);
}
for (j = 0; j < data[i].length; j++) {
ctx.fillStyle = colors[(i*2)+j];
var xvalPercentage=self.percentage(xmax,data[i][j][0],false);
var yvalPercentage=self.percentage(ymax,data[i][j][1],false);
var xper=self.percent(xlength,xvalPercentage,true);
var yper=self.percent(ylength,yvalPercentage,true);
var x=xorigin+xper ;
var y=yorigin-yper;
ctx.beginPath();
ctx.fillRect(x, y, 10, 10);
//console.log(x+","+y)
plotthis.push(x+","+y);
ctx.closePath();
}