Bug 40317 - Trend line (regression curve) improvements
Summary: Trend line (regression curve) improvements
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: Chart (show other bugs)
(earliest affected) release
Hardware: All All
: medium enhancement
Assignee: Tomaz Vajngerl
Whiteboard: VOTE
Depends on: 35712 40314 40315 40316
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Reported: 2011-08-23 10:22 UTC by Laurent Balland
Modified: 2014-03-12 02:23 UTC (History)
3 users (show)

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Crash report or crash signature:


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Description Laurent Balland 2011-08-23 10:22:06 UTC

This issue is to summarized issues about trend lines improvements:
- bug 35712: add polynomial regression type trend line
- bug 40314: Force intercept for trend line (regression curve)
- bug 40315: add moving average trend line (regression curve)
- bug 40316: Extrapolate trend line (regression curve)

All these bugs have their specific solution, but they all require file format modification. These modification are presented in the attachments of bug 35712, as well as a draft for user interface.

Hope it could help.
Comment 1 Björn Michaelsen 2011-12-23 12:36:36 UTC
[This is an automated message.]
This bug was filed before the changes to Bugzilla on 2011-10-16. Thus it
started right out as NEW without ever being explicitly confirmed. The bug is
changed to state NEEDINFO for this reason. To move this bug from NEEDINFO back
to NEW please check if the bug still persists with the 3.5.0 beta1 or beta2 prereleases.
Details on how to test the 3.5.0 beta1 can be found at:

more detail on this bulk operation: http://nabble.documentfoundation.org/RFC-Operation-Spamzilla-tp3607474p3607474.html
Comment 2 Laurent Balland 2011-12-26 13:28:25 UTC

These enhancements have not been introduced in LibO 3.5.
Extension CorelPolyGUI (Improved trend lines) try to answer these questions but
is not integrated in LibO:
Comment 3 Rainer Bielefeld Retired 2012-07-15 14:32:49 UTC
An enhancement request needs REALLY good reasons to be a MAB, liivhillar@gmail.com added this one without any reasoning. I remove and informed liivhillar@gmail.com by PM.
Comment 4 Domenico Somma 2013-03-03 15:31:34 UTC
Any news about this bug?
Force intercept for trend line is a feature many requested if you search on Google...
Comment 5 Laurent Balland 2013-07-04 21:10:05 UTC
Hello Tomaž

Thanks a lot for your great job on all these issues :)
I assigned you this bug as you already done the job ;)

Here are some comments about Version:
Build ID: e703b429cf448deddc7682a33c3e6221889efe98

Comments reported to each bug where it is the most relevant.