Shading does not work correctly with excanvas.js and jquery.flot.js

[GoogleCodeExporter]

What steps will reproduce the problem?

For larger data sets, shaded curves are not rendered correctly with
excanvas.js.

1. Small data set that renders correctly: 
http://dave.tycho.ws/Charty/index.htm?activity=248972

2. Large data set that renders incorrectly: 
http://dave.tycho.ws/Charty/index.htm?activity=252606

What is the expected output? What do you see instead?
The expected output is in example 1 above.  The incorrect output is in
example 2 above.

What version of the product are you using? On what operating system?
Most recent - excanvas_r3.zip dated March 2009.  Bug shows up in IE 8. 
Renders correctly in Firefox 3.5+ and recent versions of Safari (not using
excanvas, of course).  O/S is Windows, various versions.

Please provide any additional information below.

Original issue reported on code.google.com by k0rx...@gmail.com on 5 Apr 2010 at 1:17

[GoogleCodeExporter]

This is the same as issue 50. I'm distributing the simple-minded patch in issue 
50 with Flot, but it doesn't work for filling.

Original comment by olau%iol...@gtempaccount.com on 21 Dec 2010 at 12:35