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http://www.openoffice.org/issues/show_bug.cgi?id=67350





------- Additional comments from [EMAIL PROTECTED] Mon Jul 31 07:02:33 -0700 
2006 -------
It is indeed strange, that creating two charts in the same way does not yield
the same layout. However, there are always rounding errors when displaying
floating point numbers on a display using pixels. So, both charts in the overlay
are probably correct solutions to the rounding of values to pixels. I don't know
why they do it different.

Another important thing is that Calc uses Pixels for rendering, while the chart
uses 100th of mm internally. Therefore, there are additional rounding problems.
And finally, if you edit the chart, you see the output rendered by the drawing
layer, whereas when the chart is deactivated, you see a replacement image
(metafile) which might also differ in details.

I see those differences as not important, as the data is not forged, i.e. not
correct.

Why don't you create a chart that renders the differences between your two
plots? This way, you wouldn't have to search for differing pixels (with a
magnifying glass) but could look at differences at any scale you like, usually a
finer one.

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