About
RGraph is a JavaScript charts library based on
HTML5 SVG and canvas. RGraph is mature (over 15 years
old) and has a wealth of features making it an ideal
choice to use for showing charts on your website.
Download
Get the latest version of RGraph (version 6.18, 1st June 2024) from
the download page. You can read the changelog here. There's also older versions available,
minified files and links to cdnjs.com hosted libraries.
License
RGraph can be used for free under the GPL or if
that doesn't suit your situation there's an
inexpensive (£129) commercial license available.The strokeStyle property
The strokeStyle option is a property, usually a string, which is used
to set the color used to do stroking on the canvas. For example
the strokeRect and stroke functions both use this setting to
determine the color that they use.
As well as a string it can be a linear/radial gradient or a pattern. You can find out more about these at the links below.
An example
<script>
window.onload = function ()
{
var canvas = document.getElementById("cvs");
var context = canvas.getContext('2d');
var x = 50;
var y = 50;
var width = 100;
var height = 100;
context.strokeStyle = 'red';
context.strokeRect(x, y, width, height);
}
</script>
See also