Raphael JS Pie: Add ID to path slices

Question

I've seen this question asked over at the Raphael Google Groups, but after hours of searching there, and also on here, and Google, I cannot seem to find a solution.

I would simply like to be able to target my pie chart (svg path) slices using jQuery, but I cannot figure out how to add custom id's to the path tags - there is no ID attribute in there by default:

<path fill="#764c29" stroke="none" d="M350,350L350.6911881148345,94.00093308961084A256,256,0,0,1,561.8463375189659,206.2741175716762Z" style="stroke-width: 1; stroke-linejoin: round;" stroke-width="1" stroke-linejoin="round"/>

What would be ideal would be this:

<path **id="my_id"** fill="#764c29" stroke="none" d="M350,350L350.6911881148345,94.00093308961084A256,256,0,0,1,561.8463375189659,206.2741175716762Z" style="stroke-width: 1; stroke-linejoin: round;" stroke-width="1" stroke-linejoin="round"/>

Has anyone got an idea how this could be achieved?

This is the code I'm using to create the pie chart:

window.onload = function () {
var r = Raphael("holder");


var pie = r.g.piechart(350, 350, 256, [56, 104, 158, 23, 15, 6]);

pie.hover(function () {
    this.sector.stop();
    this.sector.animate({scale: [1.1, 1.1, this.cx, this.cy]}, 500, "bounce");

    }, function () {
        this.sector.animate({scale: [1, 1, this.cx, this.cy]}, 500, "bounce");
    });               

};

Essentially, the reason I need to be able to do this, is so I can create some separate anchor triggers to perform the scale animations shown above.

Any help greatly appreciated.

Answer 1

the piechart object provides 3 ways to reach their sectors.

1) each function

pie.each(function(sector, cover, i) {
 sector.attr({/*...*/}); //raphael
 $(sector.node).foo(); //jquery
});

2) series object (for styling and transforming)

var i = 0; // 0 = 56, 1 = 104, 2 = 158 …

//raphael way to hide the first sector
pie.series.items[i].attr({ opacity : 0 });  

//jquery way to hide the first sector
$(pie.series.items[i].node).hide(); 

whereby i is the index of your data-array

demo: http://jsbin.com/eriqa5/2/edit

3) covers object (for mouse and touch events)

//raphael way to hover the first sector
pie.covers.items[0].hover(...);

//jquery way to hover the first sector
$(pie.covers.items[0].node).hover(...);

demo: http://jsbin.com/eriqa5/4/edit