Richard Heyes wrote:
I guess the other browser doesn't do much with <canvas> ?
Nope. Eg:
<canvas id="foo">
This gets shown on none supporting browsers, but not on supportive
browsers.
</canvas>
MSIE just shows the text and doesn't do anything with the canvas.
One thing about using a canvas is bandwidth. If it's a big concern I
would hazard a guess that a bar chart (for example) would cost less in
terms of code required to build the image compared to JPGraph, and also
less in terms of output (particularly if you were to use output
compression).
Another idea for dynamic graphing could be:
http://solutoire.com/plotr/
It also uses the canvas element, but if you use excanvas for IE it'll
work in most newer browsers. I've used it in a project to provide
dynamic bar graphs from a queue so that they could see in semi-real time
how many customer requests were in different queues. It was an internal
app, or else I'd link it :(
--
Ray Hauge
www.primateapplications.com
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