[Qgis-user] Tweaking buffer parameters

[Mats Elfström]

Hi!
I want to buffer a road network in PostGIS, and dissolve the buffers on
road names. I also want flat or square end caps.
The ogr2ogr buffer tool offers dissolve but no end cap settings.
The GRASS buffer offers a kind of square caps but no dissolve. The latter
is necessary.

However, I see that the ogr2ogr buffer tool uses the PostGIS ST_Buffer
function, whose syntax does allow for join, mitre and endcap settings.
And the QGIS dialog offers a textbox for 'additional creation options'. But
entering endcap=flat in that box does nothing, since the parameter is added
to the end of a command string, and not within the brackets of the
ST_buffer function.

I need to know how to enter the endcap parameter properly.

For now, I will let FME do the job at hand.

Regards, Mats.E
______________________________________________
Mats Elfström, Väpplingvägen 21, SE-227 38 LUND, Sweden
tel: +46 46 145959 / mob: +46 70 595 39 35
alt e-mail: mats.elfstrom at giskraft.com <mats.elfstrom at telia.com>
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