Horizontal label unreadable when there are too many entries

Bug #306396 reported by Sebastien Cote on 2008-12-09
8
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Cairo Plot
Low
Rune K. Svendsen

Bug Description

When the horizontal labels are drawn and there are a lot of labels and little space, the labels are drawn on top of each other which makes the whole thing unreadable.

Overlapping labels should be skipped.

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Revision history for this message
Rodrigo Moreira Araújo (alf-rodrigo) wrote :

Did you notice this problem on BarPlots?

A fix was committed to solve this problem on Bar Plots.

For the Scatter, DotLine and Function plots, this problems will happen a lot less (if it will) because of the angular position of the labels.

Changed in cairoplot:
assignee: nobody → alf-rodrigo
importance: Undecided → Low
status: New → In Progress
Revision history for this message
Sebastien Cote (sebas642) wrote :

I've seen this problem with DotLine when I had a lot of values to plot (200+ values).

Sorry I didn't put this information into the initial report.

Revision history for this message
Rodrigo Moreira Araújo (alf-rodrigo) wrote :

Ok, I'll adapt the algorithm from BarPlot to the Scatter, DotLine and Function plots.

Revision history for this message
Sebastien Cote (sebas642) wrote :
Revision history for this message
Rune K. Svendsen (runeks) wrote :

I have added a fix for this bug in my branch: https://code.launchpad.net/~runeks/cairoplot/devel
Here's how it looks rendering three years of Google stock prices (~750 data points):

Revision history for this message
Rune K. Svendsen (runeks) wrote :

Adding the patch here so this bug reports get a proper "has patch" tag.
This is a patch to v1.1 of cairoplot, by the way. I only discovered the "trunk" version after making this patch.

Revision history for this message
Rune K. Svendsen (runeks) wrote :
Changed in cairoplot:
assignee: Rodrigo Moreira Araújo (alf-rodrigo) → Rune K. Svendsen (runeks)
status: In Progress → Fix Committed
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