https://bugs.freedesktop.org/show_bug.cgi?id=85867
Bug ID: 85867
Summary: LibreOffice slow at rendering charts involving a large
number of data points
Product: LibreOffice
Version: 4.2.6.3 release
Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: UNCONFIRMED
Severity: major
Priority: medium
Component: Chart
Assignee: [email protected]
Reporter: [email protected]
This is related to https://bugs.freedesktop.org/show_bug.cgi?id=36779 . It is
basically about rendering of charts involving large numbers of data points
being slow, but with a testable condition.
Steps to reproduce slow chart rendering:
1. Download this file:
https://openmalaria.googlecode.com/git-history/1e60bce9bd62a87c6e80fc81b96915089614eda1/test/expected/ctsoutSimpleMPDTest.txt
2. Load into LibreOffice: `LibreOffice --calc ctsoutSimpleMPDTest.txt`
3. Select start from line 2, and select tab (\t) as a field separator
4. Select columns A and C
5. Click the "insert chart" button
6. Select XY (Scatter)
7. Select "Lines only" (third image)
8. Wait until the UI is responsive again (for me this takes several seconds)
(Note: the lag occurs even before clicking "finish" on the plot wizard.)
Expected behaviour: no major lag. UI is never unresponsive for more than around
half a second _and_ the chart is rendered in under a second (even if at reduced
quality).
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