Re: [GRASS-dev] r.null apparently doesn't work on vrt via r.external on G7

2013-12-19 Thread Vaclav Petras
On Thu, Dec 19, 2013 at 9:46 AM, Newcomb, Doug  wrote:

> I thought r.external was a read-only link.
>
> r.external manual does not say anything about it. However, the example
there is read-only. And I'm not sure in which category (r/rw) r.null is.

http://grass.osgeo.org/grass70/manuals/r.external.html
http://grass.osgeo.org/grass70/manuals/r.null.html


> Doug
>
>
> On Thu, Dec 19, 2013 at 3:35 AM, Margherita Di Leo <
> dileomargher...@gmail.com> wrote:
>
>> Hi All,
>>
>> Is it an expected behaviour that r.null doesn't affect vrt raster linked
>> via r.external?
>> Tested on forest map 2000 available for download from
>> http://forest.jrc.ec.europa.eu/download/data/forest-data-download/
>> I build the mosaic with gdalbuildvrt and then use r.external
>> then I want to set to null the values 0,2,3:
>> r.null mosaic setnull=0-2-3
>> this command doesn't have any effect on the map.
>>
>> thanks
>>
>> madi
>>
>> --
>> Best regards,
>>
>> Dr. Margherita DI LEO
>> Scientific / technical project officer
>>
>> European Commission - DG JRC
>> Institute for Environment and Sustainability (IES)
>> Via Fermi, 2749
>> I-21027 Ispra (VA) - Italy - TP 261
>>
>> Tel. +39 0332 78 3600
>> margherita.di-...@jrc.ec.europa.eu
>>
>> Disclaimer: The views expressed are purely those of the writer and may
>> not in any circumstance be regarded as stating an official position of the
>> European Commission.
>>
>> ___
>> grass-dev mailing list
>> grass-dev@lists.osgeo.org
>> http://lists.osgeo.org/mailman/listinfo/grass-dev
>>
>
>
>
> --
> Doug Newcomb
> USFWS
> Raleigh, NC
> 919-856-4520 ext. 14 doug_newc...@fws.gov
>
> -
> The opinions I express are my own and are not representative of the
> official policy of the U.S.Fish and Wildlife Service or Dept. of the
> Interior.   Life is too short for undocumented, proprietary data formats.
>
> ___
> grass-dev mailing list
> grass-dev@lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/grass-dev
>
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Re: [GRASS-dev] r.null apparently doesn't work on vrt via r.external on G7

2013-12-19 Thread Newcomb, Doug
I thought r.external was a read-only link.

Doug


On Thu, Dec 19, 2013 at 3:35 AM, Margherita Di Leo <
dileomargher...@gmail.com> wrote:

> Hi All,
>
> Is it an expected behaviour that r.null doesn't affect vrt raster linked
> via r.external?
> Tested on forest map 2000 available for download from
> http://forest.jrc.ec.europa.eu/download/data/forest-data-download/
> I build the mosaic with gdalbuildvrt and then use r.external
> then I want to set to null the values 0,2,3:
> r.null mosaic setnull=0-2-3
> this command doesn't have any effect on the map.
>
> thanks
>
> madi
>
> --
> Best regards,
>
> Dr. Margherita DI LEO
> Scientific / technical project officer
>
> European Commission - DG JRC
> Institute for Environment and Sustainability (IES)
> Via Fermi, 2749
> I-21027 Ispra (VA) - Italy - TP 261
>
> Tel. +39 0332 78 3600
> margherita.di-...@jrc.ec.europa.eu
>
> Disclaimer: The views expressed are purely those of the writer and may not
> in any circumstance be regarded as stating an official position of the
> European Commission.
>
> ___
> grass-dev mailing list
> grass-dev@lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/grass-dev
>



-- 
Doug Newcomb
USFWS
Raleigh, NC
919-856-4520 ext. 14 doug_newc...@fws.gov
-
The opinions I express are my own and are not representative of the
official policy of the U.S.Fish and Wildlife Service or Dept. of the
Interior.   Life is too short for undocumented, proprietary data formats.
___
grass-dev mailing list
grass-dev@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/grass-dev

[GRASS-dev] r.null apparently doesn't work on vrt via r.external on G7

2013-12-19 Thread Margherita Di Leo
Hi All,

Is it an expected behaviour that r.null doesn't affect vrt raster linked
via r.external?
Tested on forest map 2000 available for download from
http://forest.jrc.ec.europa.eu/download/data/forest-data-download/
I build the mosaic with gdalbuildvrt and then use r.external
then I want to set to null the values 0,2,3:
r.null mosaic setnull=0-2-3
this command doesn't have any effect on the map.

thanks

madi

-- 
Best regards,

Dr. Margherita DI LEO
Scientific / technical project officer

European Commission - DG JRC
Institute for Environment and Sustainability (IES)
Via Fermi, 2749
I-21027 Ispra (VA) - Italy - TP 261

Tel. +39 0332 78 3600
margherita.di-...@jrc.ec.europa.eu

Disclaimer: The views expressed are purely those of the writer and may not
in any circumstance be regarded as stating an official position of the
European Commission.
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