d3.js - How to redraw the svg filled with circles in D3? -


i'm following this zoom example. in case, don't know how redraw data svg.

in example, svg initialized this

chartbody.append("svg:path")     .datum(data)     .attr("class", "line")     .attr("d", line);  var line = d3.svg.line()     .x(function (d) {     return x(d.date); })     .y(function (d) {     return y(d.value); });

and redrawn in function "zoomed"

svg.select(".line")         .attr("class", "line")         .attr("d", line);

while in case

init: 

usersvg.selectall("circle")     .data(usernodes.slice(1))   .enter().append("svg:circle")     .on("click", function(d){ console.log(d.ind); })     .on("mousemove", function(d){ brushonuser(d.ind); })     .on("mouseout", function(){ brushonuser(); })     .attr("r", function(d) { return d.radius; })     .attr("cx", function(d, i) { return usernodesscalex(d.x); })     .attr("cy", function(d, i) { return usernodesscaley(d.y); })     .style("fill", function(d, i) { return 'gray'; });

redraw:

usersvg.selectall("circle")     .attr("class", "circle");

of course redraw doesn't work.

so how redraw this?

in redraw function, need set attributes changed. line, d attribute, contains information determines how line drawn. circle, position of circle , radius. is, redraw function this.

usersvg.selectall("circle")     .attr("r", function(d) { return d.radius; })     .attr("cx", function(d, i) { return usernodesscalex(d.x); })     .attr("cy", function(d, i) { return usernodesscaley(d.y); });

depending on you're changing, may have set different set of attributes. is, if you're not changing radius, there's no need set that, if you're changing fill color, need set well.


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