[英]Changing d3.js symbol size based on the attribute of data
我正在尝试根据数据集中的属性“ WinsNoms”的值来缩放符号的大小。 该图表将被渲染,但不会根据“ winsNoms”进行缩放。 谁能帮我我在哪里错了?
var sizeExtent = d3.extent(data, function(d) { return d.WinsNoms });
var sizeScale = d3.scale.linear()
.domain(sizeExtent)
.range([5,15]);
var symbolTypesx = {
"cross": d3.svg.symbol().type("cross").size(function(d) { return sizeScale(d.WinsNoms);}),
"circle": d3.svg.symbol().type("circle").size(function(d) { return sizeScale(d.WinsNoms);})
};
svg2.selectAll("path")
.data(data)
.enter().append("path")
.attr("class", "dot")
// position it, can't use x/y on path, so translate it
.attr("transform", function(d) {
return "translate("+xScale(d.imdbRating)+","+yScale(d.imdbVotes)+")";
})
.attr("d", function(d,i){
if (d.IsGoodRating === 0)
{ // circle if bar === 0
return symbolTypesx.circle();
}
else
{
return symbolTypesx.cross();
}
})
// fill based on goo and foo
.style("fill", function(d,i){
if (d.IsGoodRating === 0)
return "red";
else
return "blue";
});
调用它时,需要将基准传递到symbol函数中:
return symbolTypesx.circle(d);
运行代码:
<!DOCTYPE html> <html> <head> <script data-require="d3@3.5.17" data-semver="3.5.17" src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.17/d3.js"></script> </head> <body> <script> var svg2 = d3.select("body") .append("svg") .attr("width", 500) .attr("height", 500); var data = [{ WinsNoms: Math.random(), GoodRathing: Math.random() > 0.5 ? 1 : 0 }, { WinsNoms: Math.random(), GoodRathing: Math.random() > 0.5 ? 1 : 0 }, { WinsNoms: Math.random(), GoodRathing: Math.random() > 0.5 ? 1 : 0 }, { WinsNoms: Math.random(), GoodRathing: Math.random() > 0.5 ? 1 : 0 }, { WinsNoms: Math.random(), GoodRathing: Math.random() > 0.5 ? 1 : 0 }]; var sizeExtent = d3.extent(data, function(d) { return d.WinsNoms }); var sizeScale = d3.scale.linear() .domain(sizeExtent) .range([5, 250]); var symbolTypesx = { "cross": d3.svg.symbol().type("cross").size(function(d) { return sizeScale(d.WinsNoms); }), "circle": d3.svg.symbol().type("circle").size(function(d) { return sizeScale(d.WinsNoms); }) }; svg2.selectAll("path") .data(data) .enter() .append("path") .attr("class", "dot") .attr("transform", function(d,i) { return "translate(" + ((i * 20) + 10) + "," + ((i * 20) + 10) + ")"; }) .attr("d", function(d, i) { if (d.IsGoodRating === 0) { // circle if bar === 0 return symbolTypesx.circle(d); } else { return symbolTypesx.cross(d); } });; </script> </body> </html>
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