I was trying to use Raphael JS graphics library. I would like to use the attribute gradient which should accept an object. Documentation says to refer to SVG specs. I found the gradient object in SVG, for instance   <linearGradient id="myFillG...
Is it possible to calculate a color in a middle of a gradient?  var color1 = 'FF0000'; var color2 = '00FF00';  // 50% between the two colors, should return '808000' var middle = gradient(color1, color2, 0.5);    I only have tw...
I'm trying to interpolate between two colours in HSV colour space to produce a smooth colour gradient.  I'm using a linear interpolation, eg:  h = (1 - p) * h1 + p * h2 s = (1 - p) * s1 + p * s2 v = (1 - p) * v1 + p * v2   (where p is the per...
How to draw a circle with gradient color? Say, a gradient from yellow to blue.  Normally, to create a circle in yellow we can use the following code:  var cdata=[50,40]; var xscale=40; var xspace =50; var yscale=70;  var svg = d3.select("body"...
In this D3 diagram, the circles are filled with radial gradients, and changing opacity is used for fading in and fading out:      var width = 400,     height = 400,     padding = 1.5, // separation between same-color nodes     clusterPadding = 6, //...
I need to draw a dynamic donut chart - something similar to -  http://194.90.28.56/~dev1/t.jpg   The green part indicates the percentage (in this case 27%) - it must be dynamic.   I think I need to do something like - Android - How to draw an arc bas...
When I generate line chart in fullscreen window, shown colors are in declared radius, however when I try to resize window, chart is resized properly however gradient colors are messed up. I try to solve this problem via listeners, however it doesn...
This is my d3 force layout:  (Please run the code snippet)    var width = 600,     height = 600;  var svg = d3.select('body').append('svg')     .attr('width', width)     .attr('height', height);  var color = d3.scale.c...
Is there some kind of trick for creating a gradient with multiple stops in 2d space? What I would like to do is create a rectangle in my canvas, and then have a different color stop at each corner.  I've tried creating 4 gradients, one at each co...
var i = 0; var x = 960; var y = 540; var interval = window.setInterval(render, 100);  function render() {  gradient = cxt.createRadialGradient(x, y, i, x, y, i+10); gradient.addColorStop(0, "rgba(0,0,0,0)");//white inside  gradient.addColorSt...

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