Re: [GRASS-user] Perform resample a raster using another image as a reference for the process?

2016-08-03 Thread Eddison Araya 
2016-08-03 15:17 GMT-06:00 Nikos Alexandris :

>
> Eddison wrote:
>>
>> >>> Hello thank you very much , you can put some screenshots of the
 >>> process?

>>>
>> Helmut Kudrnovsky:
>>
>> >> have a look at https://grass.osgeo.org/grass70/manuals/g.region.html
 >> -a Align region to resolution raster=name[,name,...]

>>>
>> See also
 https://grasswiki.osgeo.org/wiki/Computational_region

>>>
>> >> Set region to match raster map(s)
 >> g.region -a raster=your_raster_you_want_align_to

>>>
>> Nikos Alexandris:
>>
>> > Also useful (to read and use):
 > https://grass.osgeo.org/grass70/manuals/r.resample.html

>>>
>> Markus Neteler:
>>
>> For an overview, see also
 https://grasswiki.osgeo.org/wiki/Interpolation

>>>
>> PS: I have now added the second link to all relevant manual pages

>>>
>> Eddison Araya:
>>
>> Hello thank you very much , then the command is as follows:
>>> g.region -a -p raster=lsat5_1987_10 align=urban  ?
>>>
>>
>>
>> Eddison, the command is as Helmut proposed in one of his first posts
>> (see below).
>>
>> Essentialy, you want to set the extent of the region (within which
>> grass' raster modules will operate) to match a raster map's dimensions.
>>
>> That is,
>>
>> g.region raster=Your_Raster_Map
>>
>> And, even more, you want to force the alignment of the extent to this
>> map.  This is done by addin the -a flag:
>>
>> g.region -a raster=Your_Raster_Map
>>
>> That's it, nothing more.
>>
>
> Eddison, seems I was to fast (and writing out of memory) and your above
> command is correct, I guess.  The -a will align the region's extent, to,
> well, as the manual explains, the resolution.
>
> So, you'd need your `align=` part.
>
> Nikos
>



Hello, thank you very much to all of you for your answers, for their
willingness to cooperate , very friendly. regards Eddison
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Re: [GRASS-user] Perform resample a raster using another image as a reference for the process?

2016-08-03 Thread Nikos Alexandris 



Eddison wrote:


>>> Hello thank you very much , you can put some screenshots of the
>>> process?


Helmut Kudrnovsky:


>> have a look at https://grass.osgeo.org/grass70/manuals/g.region.html
>> -a Align region to resolution raster=name[,name,...]



See also
https://grasswiki.osgeo.org/wiki/Computational_region



>> Set region to match raster map(s)
>> g.region -a raster=your_raster_you_want_align_to


Nikos Alexandris:


> Also useful (to read and use):
> https://grass.osgeo.org/grass70/manuals/r.resample.html


Markus Neteler:


For an overview, see also
https://grasswiki.osgeo.org/wiki/Interpolation



PS: I have now added the second link to all relevant manual pages


Eddison Araya:


Hello thank you very much , then the command is as follows:
g.region -a -p raster=lsat5_1987_10 align=urban  ?



Eddison, the command is as Helmut proposed in one of his first posts
(see below).

Essentialy, you want to set the extent of the region (within which
grass' raster modules will operate) to match a raster map's dimensions.

That is,

g.region raster=Your_Raster_Map

And, even more, you want to force the alignment of the extent to this
map.  This is done by addin the -a flag:

g.region -a raster=Your_Raster_Map

That's it, nothing more.


Eddison, seems I was to fast (and writing out of memory) and your above
command is correct, I guess.  The -a will align the region's extent, to,
well, as the manual explains, the resolution.

So, you'd need your `align=` part.

Nikos
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Re: [GRASS-user] Perform resample a raster using another image as a reference for the process?

2016-08-03 Thread Nikos Alexandris 

Eddison wrote:


>>> Hello thank you very much , you can put some screenshots of the
>>> process?


Helmut Kudrnovsky:


>> have a look at https://grass.osgeo.org/grass70/manuals/g.region.html
>> -a Align region to resolution raster=name[,name,...]



See also
https://grasswiki.osgeo.org/wiki/Computational_region



>> Set region to match raster map(s)
>> g.region -a raster=your_raster_you_want_align_to


Nikos Alexandris:


> Also useful (to read and use):
> https://grass.osgeo.org/grass70/manuals/r.resample.html


Markus Neteler:


For an overview, see also
https://grasswiki.osgeo.org/wiki/Interpolation



PS: I have now added the second link to all relevant manual pages


Eddison Araya:


Hello thank you very much , then the command is as follows:
g.region -a -p raster=lsat5_1987_10 align=urban  ?



Eddison, the command is as Helmut proposed in one of his first posts
(see below).

Essentialy, you want to set the extent of the region (within which
grass' raster modules will operate) to match a raster map's dimensions.

That is,

g.region raster=Your_Raster_Map

And, even more, you want to force the alignment of the extent to this
map.  This is done by addin the -a flag:

g.region -a raster=Your_Raster_Map

That's it, nothing more.

Nikos

ps-  Please, if you would like, keep bottom posting so as to to preserve flow 
of the
discussion.
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Re: [GRASS-user] Perform resample a raster using another image as a reference for the process?

2016-08-03 Thread Eddison Araya 
Hello thank you very much , then the command is as follows:



g.region -a -p raster=lsat5_1987_10 align=urban  ?



regards



Eddison

2016-08-03 5:52 GMT-06:00 Markus Neteler :

> On Wed, Aug 3, 2016 at 12:44 AM, Nikos Alexandris
>  wrote:
> > Eddison wrote:
> >>> Hello thank you very much , you can put some screenshots of the
> process?
> > * Helmut Kudrnovsky  [2016-08-02 12:21:17 -0700]:
>
> >> have a look at https://grass.osgeo.org/grass70/manuals/g.region.html
> >> -a Align region to resolution raster=name[,name,...]
>
> See also
> https://grasswiki.osgeo.org/wiki/Computational_region
>
> >> Set region to match raster map(s)
> >> g.region -a raster=your_raster_you_want_align_to
> >
> >
> > Also useful (to read and use):
> > https://grass.osgeo.org/grass70/manuals/r.resample.html
>
> For an overview, see also
> https://grasswiki.osgeo.org/wiki/Interpolation
>
> Markus
>
> PS: I have now added the second link to all relevant manual pages
>
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Re: [GRASS-user] Perform resample a raster using another image as a reference for the process?

2016-08-02 Thread Nikos Alexandris 

Eddison wrote:


Hello thank you very much , you can put some screenshots of the process?


* Helmut Kudrnovsky  [2016-08-02 12:21:17 -0700]:


have a look at https://grass.osgeo.org/grass70/manuals/g.region.html
-a Align region to resolution raster=name[,name,...]



Set region to match raster map(s)
g.region -a raster=your_raster_you_want_align_to


Also useful (to read and use): 
https://grass.osgeo.org/grass70/manuals/r.resample.html

Nikos
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Re: [GRASS-user] Perform resample a raster using another image as a reference for the process?

2016-08-02 Thread Helmut Kudrnovsky 
Eddison wrote
> Hello thank you very much , you can put some screenshots of the process?
> Greetings and thanks Eddison

have a look at https://grass.osgeo.org/grass70/manuals/g.region.html

-a   Align region to resolution
raster=name[,name,...]   Set region to match raster map(s)

g.region -a raster=your_raster_you_want_align_to




-
best regards
Helmut
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Re: [GRASS-user] Perform resample a raster using another image as a reference for the process?

2016-08-02 Thread Eddison Araya 
Hello thank you very much , you can put some screenshots of the process?
Greetings and thanks Eddison

2016-08-02 11:13 GMT-06:00 Laurent C. :

> Eddison,
>
> First align your region to the destination raster with 'g.region
> raster=rastername'.
> Then resample the other raster.
>
> Laurent
>
> 2016-08-02 11:48 GMT-05:00 Eddison Araya :
> > Hello , nice to say hello , I have 2 raster : A raster is 20 meters and
> > another 30 meters in the same area. As I can do in QGIS for a resampling
> an
> > image with reference to the other? and that the pixels are perfectly
> aligned
> > ? I use a google translator ! Thank you very much Eddison
> >
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Re: [GRASS-user] Perform resample a raster using another image as a reference for the process?

2016-08-02 Thread Laurent C. 
Eddison,

First align your region to the destination raster with 'g.region
raster=rastername'.
Then resample the other raster.

Laurent

2016-08-02 11:48 GMT-05:00 Eddison Araya :
> Hello , nice to say hello , I have 2 raster : A raster is 20 meters and
> another 30 meters in the same area. As I can do in QGIS for a resampling an
> image with reference to the other? and that the pixels are perfectly aligned
> ? I use a google translator ! Thank you very much Eddison
>
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