Scatter Plot

Discontinued products DHTMLX Touch
#1

I was wondering if there is a way to plot points onto the chart. An example is that if I plot (1,2), (1,3), (1,4) I’d expect to see three points in vertical line as opposed to a time series of 2,3,4.

If not, is this functionality expected to be added?

Thanks for your time,
Michael

#2

It is not supported currently and so far we have not plans to implement the one
( it doesn’t seems technically difficult, we can provide some hints how it can be implemented through custom code if you are interested )

#3

That would be great - I’ve looked a couple of different plotting utilities for mobile devices but your documentation/support has been a step ahead of the competition as usual.

Thanks,
Michael

#4

You can define custom data rendering function as

[code] dhx.chart.plot={
pvt_render_plot:function(ctx, data, point1, point2, sIndex, map){
for (var i = 0; i < data.length; i++) {
var x0 = 20+data[i].x;
var y0 = 20+data[i].y;
var text = data[i].text;

				ctx.lineWidth = 2;
				ctx.fillStyle = "red";
				ctx.strokeStyle = "green";
				ctx.beginPath();
				ctx.arc(x0,y0,5,0,Math.PI*2,true);
				ctx.fill();
				ctx.stroke();

				this.renderTextAt(false, true, x0,y0+5,text);
			};
		}
	};[/code]

and later use it in chart as

view:"chart", type:"plot", id:"mychart", data: [{ x:100, y:50, text:"a1"},{ x:120, y:50, text:""},{ x:8, y:7, text:""},{ x:30, y:15, text:"b1"},{ x:45, y:15, text:""}]