[GRASS-user] create raster from line vector

[Michael Barton]

On Feb 16, 2009, at 7:40 AM, <grass-user-request at lists.osgeo.org> wrote:

> Date: Mon, 16 Feb 2009 15:17:27 +0100
> From: "G. Allegri" <giohappy at gmail.com>
> Subject: [GRASS-user] create raster from line vector
> To: grassuser <grass-user at lists.osgeo.org>
> Message-ID:
> 	<e12429640902160617g37ee0a88o85314bcfbf91c328 at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> Hello everyone.
> A simple question, but I'm getting mad with it!
> I simply have to convert a vector line to raster. I've done it many
> times in the past, but this time I can't make it work:
>
> v.to.rast input=border output=border use=val type=line layer=1 value=1
>
> The output is simply blank (MAX and MIN values are NULL)
> What stupid error am I doing?
>
> Giovanni
>

Did you set your computational region to match the vector using  
g.region? Regardless of what you see in the display, your  
computational region needs to be set so that GIS operations work on  
the map or parts of map you want.

Michael