javascript D3.js 中的透明颜色
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transparent color in javascript D3.js
提问by star
EDIT: I have a SVG graph produced with d3.js. The filled area of the graph is coloured by CSS rules. I would like the areas to be semi-transparent so that you can see data obscured by the foremost graph area.
编辑：我有一个用 d3.js 生成的 SVG 图。图表的填充区域由 CSS 规则着色。我希望这些区域是半透明的，以便您可以看到被最前面的图形区域遮挡的数据。
Original:
原来的：
Is there anyway to make the color of this graph transparent? http://jsfiddle.net/skys331/QBDGB/22/I want to be able to see behind the green data.
有没有办法使这个图形的颜色透明？http://jsfiddle.net/skys331/QBDGB/22/我希望能看到后面的绿色数据。
Thanks
谢谢
回答by rossipedia
Yes. You can use transparentfor the fill, like so:
是的。您可以transparent用于填充，如下所示：
.line1 {
fill: transparent;
...
}
You can alternatively set the opacity of the .line1element:
您也可以设置.line1元素的不透明度：
.line1 {
fill: green;
opacity: 0.5;
}
Or set the fill to us rgba(RGB color with an alpha component):
或者将填充设置为我们rgba（带有 alpha 分量的 RGB 颜色）：
.line1 {
fill: rgba(0, 128, 0, 0.5);
}
回答by Rene Pot
Add Opacity to the green:
为绿色添加不透明度：
.line1 {
fill: green;
stroke: black;
stroke-width: 1.5px;
opacity:0.5;
}
Edited your fiddle: http://jsfiddle.net/QBDGB/23/
编辑你的小提琴：http: //jsfiddle.net/QBDGB/23/
