Re: [GRASS-user] Interpolation with v.surf.rst

2013-02-04 Thread Moritz Lennert
On 03/02/13 16:53, Martin Landa wrote: 2013/2/3 Moritz Lennertmlenn...@club.worldonline.be: * if input is 2D and zcolumn is not given - using categories I'm pretty sure that this will create lots of confusion. I think in this case it should fail with an error message. just note, it's

Re: [GRASS-user] Interpolation with v.surf.rst

2013-02-04 Thread Markus Metz
On Mon, Feb 4, 2013 at 9:20 AM, Moritz Lennert mlenn...@club.worldonline.be wrote: On 03/02/13 16:53, Martin Landa wrote: 2013/2/3 Moritz Lennertmlenn...@club.worldonline.be: * if input is 2D and zcolumn is not given - using categories I'm pretty sure that this will create lots of

Re: [GRASS-user] Interpolation with v.surf.rst

2013-02-03 Thread Martin Landa
Hi, 2013/1/16 Margherita Di Leo direg...@gmail.com: If you want to use elevation values from zcolumn, you should not use the -z flag. Try instead v.surf.rst input=isoline@TOPOIKDATA zcolumn=height elev=elev_1m I was thinking to omit such -z flags in G7. * if zcolumn is given, use

Re: [GRASS-user] Interpolation with v.surf.rst

2013-02-03 Thread Moritz Lennert
On 03/02/13 12:47, Martin Landa wrote: Hi, 2013/1/16 Margherita Di Leodireg...@gmail.com: If you want to use elevation values from zcolumn, you should not use the -z flag. Try instead v.surf.rst input=isoline@TOPOIKDATA zcolumn=height elev=elev_1m I was thinking to omit such -z flags in G7.

Re: [GRASS-user] Interpolation with v.surf.rst

2013-02-03 Thread Martin Landa
2013/2/3 Moritz Lennert mlenn...@club.worldonline.be: * if input is 2D and zcolumn is not given - using categories I'm pretty sure that this will create lots of confusion. I think in this case it should fail with an error message. just note, it's current behaviour. Martin -- Martin Landa

Re: [GRASS-user] Interpolation with v.surf.rst

2013-02-03 Thread Hamish
Martin wrote: * if input is 2D and zcolumn is not given - using categories Moritz wrote: I'm pretty sure that this will create lots of confusion. I think in this case it should fail with an error message. Hi, I tend to agree, even if it is the current situation. I'm all for making the

[GRASS-user] Interpolation with v.surf.rst

2013-01-16 Thread Brian Sanjeewa Rupasinghe
Hi, I have 2D isolines in GRASS vector format with elevation in an attribute field called height. I used v.surf.rst function to create raster DEM. However, after creation, it outputs a DEM with value 0 elevation only. The description of the function is given as below. What would be the possible

Re: [GRASS-user] Interpolation with v.surf.rst

2013-01-16 Thread Markus Metz
On Wed, Jan 16, 2013 at 10:16 AM, Brian Sanjeewa Rupasinghe jink...@gmail.com wrote: Hi, I have 2D isolines in GRASS vector format with elevation in an attribute field called height. I used v.surf.rst function to create raster DEM. However, after creation, it outputs a DEM with value 0

Re: [GRASS-user] Interpolation with v.surf.rst

2013-01-16 Thread Brian Sanjeewa Rupasinghe
Hi, When i omit -z flag, v.surf.rst function keeps on running and nothing happens. Here is what i used. v.surf.rst input=isoline@TOPOIKDATA zcolumn=height elev=elev_1m Brian On Wed, Jan 16, 2013 at 3:24 PM, Markus Metz markus.metz.gisw...@gmail.comwrote: On Wed, Jan 16, 2013 at 10:16 AM,

Re: [GRASS-user] Interpolation with v.surf.rst

2013-01-16 Thread Markus Metz
On Wed, Jan 16, 2013 at 11:06 AM, Brian Sanjeewa Rupasinghe jink...@gmail.com wrote: Hi, When i omit -z flag, v.surf.rst function keeps on running and nothing happens. Here is what i used. v.surf.rst input=isoline@TOPOIKDATA zcolumn=height elev=elev_1m v.surf.rst can take quite some time

Re: [GRASS-user] Interpolation with v.surf.rst

2013-01-16 Thread Martin Landa
Hi, 2013/1/16 Markus Metz markus.metz.gisw...@gmail.com: If you want to use elevation values from zcolumn, you should not use the -z flag. Try instead v.surf.rst input=isoline@TOPOIKDATA zcolumn=height elev=elev_1m I was thinking to omit such -z flags in G7. * if zcolumn is given, use values

Re: [GRASS-user] Interpolation with v.surf.rst

2013-01-16 Thread Brian Sanjeewa Rupasinghe
Yes. there is no point in using Z coordinate if the input is 2D. However, in the current GRASS 7, even if the input is 2D, if -z flag is not used, v.surf.rst does not work. On Wed, Jan 16, 2013 at 4:24 PM, Martin Landa landa.mar...@gmail.comwrote: Hi, 2013/1/16 Markus Metz

Re: [GRASS-user] Interpolation with v.surf.rst

2013-01-16 Thread Margherita Di Leo
Hi, On Wed, Jan 16, 2013 at 11:54 AM, Martin Landa landa.mar...@gmail.comwrote: Hi, 2013/1/16 Markus Metz markus.metz.gisw...@gmail.com: If you want to use elevation values from zcolumn, you should not use the -z flag. Try instead v.surf.rst input=isoline@TOPOIKDATA zcolumn=height