[Qgis-user] lines with arrowheads
Stefanie Tellex
stefie10 at media.mit.edu
Mon Jun 2 12:22:04 PDT 2008
I submitted a patch to do this a while back, but I don't think it was
accepted. I thought it was because it was decided to wait until a more
modular rendering pipeline was added, but I can't find the messages
about that in the thread. In fact the thread implies it would be
accepted, but if it made it into svn, I never noticed it.
(http://lists.osgeo.org/pipermail/qgis-developer/2008-February/003248.html)
The patches are attached. (arrows_in_linestrings draws arrows;
draw_start_and_stop draws a green dot at the start and a red dot at the
end.)
This message suggests an alternative solution that doesn't require
compiling qgis yourself:
http://lists.osgeo.org/pipermail/qgis-developer/2008-February/003250.html
Stefanie
M S wrote:
> One of the outputs from r.flow in GRASS is downslope flow lines.
> Without arrowheads (or some similar symbol like that) at the end of
> lines pointing which way is downhill, the lines become ambiguous.
>
> Is there a way to draw these lines with arrowheads? Or some other
> approach that might achieve this?
>
> Mark
>
>
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