[GRASS-user] Map scale wrong

Anna Petrášová kratochanna at gmail.com
Sun Dec 13 12:15:07 PST 2015


On Sun, Dec 13, 2015 at 3:09 PM, Alec Ventura <alecventura at hotmail.com>

> So... i have converted my shape file to this projection:
> http://spatialreference.org/ref/epsg/4618/ on Qgis, and have created

you should probably use a projected coordinate system, not geographic
coordinate system. The distance you specify in the buffer is now in
degrees, that's why it needs to be so small.


> a new projection and mapset with this same epsg on Grass...
> But when i import the shape on grass the map scale is still crazy, it says
> 1:6, but my area is huge and i can see all my points. On Qgis my same file
> has a 1:1.183.641 scale
> And this is a problem because when i try to make the buffers over my
> points i have to use a very small distance:
> g.run_command('v.buffer', input='PocosSad at Map3',
> output='boreholesGrassBuffer', type='point', distance='0.01')
> else my buffer covers the hole area.
> Anyone knows how i can fix this map scale? or why is this strange?
> my shape file is in attach,
> Very tnks
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