To comment on the following update, log in, then open the issue:
http://www.openoffice.org/issues/show_bug.cgi?id=16280
User iha changed the following:
What |Old value |New value
================================================================================
CC|'bm,joachimdurchholz,pagal|'bm,iha,joachimdurchholz,p
|mes,tonygalmiche,utomo99' |agalmes,tonygalmiche,utomo
| |99'
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Status|STARTED |RESOLVED
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OS/Version|Linux |All
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Platform|PC |All
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Resolution| |FIXED
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Target milestone|OOo 2.x |OOo 2.3
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------- Additional comments from [EMAIL PROTECTED] Fri Nov 30 12:25:15 +0000
2007 -------
In OOo 2.3 the chart module is completely rewritten. Within the new chart I did
several performance improvements. The major two affecting the most examples here
are:
1) When for a given resolution a data point would be on the same pixel as its
predecessor than no shape is created for the display. This reduces the amount of
shapes to be rendered enormously when the data has any continuity.
2) When creating a category chart (bar, line etc. ) for thousands of points
there are not any longer created thousands of text labels at the axis, which
also reduces the rendering time significantly.
Here are some example measurements to demonstrate the improvement:
A) Loading attached example IssueReport.sxw on my windows pc takes
~3s in OOo2.3 instead of ~43 s in OOo2.2
B) Loading file.xls attached at duplicate issue 19741 takes
3s in OOo2.3 instead of 100s in OOo2.2
C) Loading file 363.xls from issue 20326 takes
13s instead of 65s
D) Loadinf file CDMA.sxc from issue 16449 and switching to sheet 1 takes
6s instead of 100s
E) Loading file muzyka.xls from issue 30962 takes
4s instead of 160s
F) Loading file test.xls from issue 32318 takes
2s instead of 62s
The concrete gain in speed depends on the concrete scenario. But roughly the new
chart is an order of magnitude faster than the old one when having many data
points.
So I set this issue to fixed.
When there is further demand for speed up please submit a separate issue. Thanks
for your patience during the phase of chart re-implementation.
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