Issue 82891 - Regression curves with logarithmic x-scale may look jagged
Summary: Regression curves with logarithmic x-scale may look jagged
Status: CLOSED FIXED
Alias: None
Product: General
Classification: Code
Component: chart (show other issues)
Version: 3.3.0 or older (OOo)
Hardware: All All
: P3 Trivial (vote)
Target Milestone: ---
Assignee: kla
QA Contact: issues@graphics
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2007-10-23 15:02 UTC by bjoern.milcke
Modified: 2013-02-24 21:22 UTC (History)
1 user (show)

See Also:
Issue Type: DEFECT
Latest Confirmation in: ---
Developer Difficulty: ---

Attachments
Scatter chart with log x-scale and regression curves (15.02 KB, application/vnd.oasis.opendocument.spreadsheet)
2007-10-23 15:04 UTC, bjoern.milcke 		no flags Details
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Description bjoern.milcke 2007-10-23 15:02:39 UTC 
See attached bugdoc. The x-scale is logarithmic, the regression curves that are
curved in the projection space look jagged, as the points of the curve are not
equally distributed in x direction.
Comment 1 bjoern.milcke 2007-10-23 15:04:57 UTC 
Created attachment 49090 [details]
Scatter chart with log x-scale and regression curves
Comment 2 bjoern.milcke 2007-10-24 12:14:00 UTC 
Fixed by transforming the x-values for the regression curve points with the
XScaling at the x-scale forth and back, so that they are equidistant in the
projected Cartesian linear system.
Comment 3 bjoern.milcke 2007-11-06 13:50:29 UTC 
Please verify in CWS chart17
Comment 4 kla 2007-11-09 08:55:42 UTC 
seen ok in cws chart 17 -> verified
Comment 5 p9w.vu.31122010 2008-02-06 11:27:11 UTC 
Verified fixed in OOH680_m5; closing