[GRASS-user] Stranges things after importing a shapefile

[Felix Schalck]

It Works ! I used v.in.ogr -c command and now it looks pretty good:
http://img25.imageshack.us/img25/6802/swbdgrass3.png

Thanks you very much, Nikos.

Now I got another problem: export to inkscape produce a way-to-big
file, which I can't rework with my current system config (AMD64, 3Gb
ram). Is it possible to do the job in grass, and produce a
good-looking anti-aliased raster river layer, which I could simply
layer over the topographic layer ? Is this doable with v.to.rast ?

Thanks again for your help,

Felix

2009/11/10 Νίκος Αλεξανδρής <nikos.alexandris at felis.uni-freiburg.de>:
> On Tue, 2009-11-10 at 17:50 +0100, Felix Schalck wrote:
>> Ok: you are right, the pictures I uploaded are not very useful; so I
>> made another 4 screenshots, to show my problem:
>
>> First Image: Rhine river, and swiss lakes in qgis (displaying the raw
>> shapefile): http://img690.imageshack.us/img690/1144/swbdrhineqgis.png
>
>> Second Image: (Approximately) Same region, after importation as GRASS
>> vector, using v.in.ogr:
>> http://img690.imageshack.us/img690/3850/swbdrhinegrass.png
>> The middle-rhine just vanished over the process ! Also, notice that no
>> lake is recognized as closed area (although zooming in shows no
>> apparent dangles), and doesn't color. This is annoying, since I would
>> mean a manual rework all lakes to show them properly in the final map.
>
>> Third image: Zoom at the middl-Rhine, with Qgis:
>> http://img442.imageshack.us/img442/1650/swbdrhineqgis2.png
>
>> Forth image: (Approximately) Same region, after importation as GRASS
>> vector: http://img266.imageshack.us/img266/6029/swbdrhinegrass2.png
>> Obvious question: what happened to the river ?
>
> Right, very clear. The "problem" is known. I might be missing something
> but, in general, I think my previous answer, and Achims suggestion,
> covers "it".
>
>> As explined, the shapefile are meant to serve as vector layer on my
>> final topographic map; thus I'm using grass as middle-step, between
>> qgis shapefile and inkscape. Im very interested in nikos'
>> import-without-clean option: would this work out for me (eg: would it
>> be possible to export the non-cleaned grass vector layer to svg) ?
>
> Yes (for a nice map but you won't be good for using this for analysis).
> Go ahead and try ;-)
>
> Nikos
>
>