[Qgis-user] lines with arrowheads

M S mseibel at gmail.com
Mon Jun 2 11:59:29 PDT 2008


It can be done in grass by turning on the "line direction" switch for the
line vectors.

On Mon, Jun 2, 2008 at 2:53 PM, Andreas Neumann <a.neumann at carto.net> wrote:

> Hi Mark and others,
>
> I don't think this is currently possible in QGIS. But I think that there is
> definitely a need for such a functionality. Directionality is important in
> GIS and QGIS should some day provide a way to display arrow heads and other
> markers at vertices, similar to the concept SVG supports markers.
>
> Also, in conjunction with GRASS, such a functionality is quite important.
>
> Andreas
>
> 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
>>
>>
>> ------------------------------------------------------------------------
>>
>> _______________________________________________
>> Qgis-user mailing list
>> Qgis-user at lists.osgeo.org
>> http://lists.osgeo.org/mailman/listinfo/qgis-user
>>
>
> --
>
> --
> Andreas Neumann
> Böschacherstrasse 6
> CH-8624 Grüt (Gossau ZH)
> Switzerland
> Phone: ++41-44-2736668
> Email: a.neumann at carto.net
>
> Web: http://www.carto.net/neumann/
> SVG Examples: http://www.carto.net/papers/svg/samples/
> SVG.Open: http://www.svgopen.org/
> _______________________________________________
> Qgis-user mailing list
> Qgis-user at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/qgis-user
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/qgis-user/attachments/20080602/78560e6c/attachment.html>


More information about the Qgis-user mailing list