[GRASS-dev] d.rast.multi ?

[Yann Chemin]

Funny Doug, you nearly read my mind here... -> "gdal/GRASS interface code"

Thanks,
Yann

On 20 March 2013 17:29, Newcomb, Doug <doug_newcomb at fws.gov> wrote:
> Yann,
> About all I can recommend is the vrt format tutorial,
> http://www.gdal.org/gdal_vrttut.html, gdal,  data model
> http://www.gdal.org/gdal_datamodel.html, and driver tutorial,
> http://www.gdal.org/gdal_drivertut.html  , etc in the gdal online
> documentation. You might look at the existing gdal/GRASS interface code. I'm
> not a C programmer yet, so I can't help much there.
>
> Doug
>
>
> On Tue, Mar 19, 2013 at 10:01 PM, Yann Chemin <yann.chemin at gmail.com> wrote:
>>
>> Thank you Doug,
>>
>> yes r.patch is a good alternative, but it means writing to disk etc.
>> Was more thinking of a display memory thingy.
>>
>> Been thinking about the virtual rasters indeed, maybe will have a
>> look, any C code page you could direct me to?
>>
>> Cheers,
>> Yann
>>
>> On 20 March 2013 05:39, Newcomb, Doug <doug_newcomb at fws.gov> wrote:
>> > Yann,
>> > If I have a large number of layers, I usually do it from a command line
>> > or
>> > with a script.  I done r.patch with over 100 layers in one command (
>> > before
>> > I discovered gdalbuildvirt :-))
>> >
>> > Doug
>> >
>> >
>> > On Tue, Mar 19, 2013 at 4:36 AM, Vaclav Petras <wenzeslaus at gmail.com>
>> > wrote:
>> >>
>> >> On 19 March 2013 09:31, Yann Chemin <yann.chemin at gmail.com> wrote:
>> >> > OK found Ctrl+Shift+L in wxGUI
>> >> >
>> >> Yes, it is my favorite feature. I use it even to find and add one map.
>> >>
>> >> However, there is some issue with many layers in layer manager. If you
>> >> load more than 20 (?) layers (maps) only some of them will be
>> >> rendered. There were no investigations; maybe it applies only to
>> >> vectors. And, of course, it is slow.
>> >>
>> >> > Thanks !
>> >> > Yann
>> >> >
>> >> > On 19 March 2013 13:56, Yann Chemin <yann.chemin at gmail.com> wrote:
>> >> >> I am dealing with hourly Microwave data that are not covering the
>> >> >> whole World in each layer.
>> >> >>
>> >> >> To have a decent presentation map of the data, I'd like to get a set
>> >> >> (say 30-50 layers) displayed in one go.
>> >> >>
>> >> >> OK I could do it with the png driver in a script (which is what it
>> >> >> may
>> >> >> eventually become), but for the sake of knowledge, is there a GUI
>> >> >> option to load a (rather large) set of images in one block without
>> >> >> having to struggle with a cluttered GIS Manager?
>> >> >>
>> >> >> Thanks
>> >> >> Yann
>> >> >>
>> >> >> --
>> >> >> Yann Chemin
>> >> >> Researcher at IWMI
>> >> >> Skype/FB: yann.chemin
>> >> >
>> >> >
>> >> >
>> >> > --
>> >> > Yann Chemin
>> >> > Researcher at IWMI
>> >> > Skype/FB: yann.chemin
>> >> > _______________________________________________
>> >> > grass-dev mailing list
>> >> > grass-dev at lists.osgeo.org
>> >> > http://lists.osgeo.org/mailman/listinfo/grass-dev
>> >> _______________________________________________
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>> >
>> >
>> >
>> >
>> > --
>> > Doug Newcomb
>> > USFWS
>> > Raleigh, NC
>> > 919-856-4520 ext. 14 doug_newcomb at 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.
>>
>>
>>
>> --
>> Yann Chemin
>> Researcher at IWMI
>> Skype/FB: yann.chemin
>
>
>
>
> --
> Doug Newcomb
> USFWS
> Raleigh, NC
> 919-856-4520 ext. 14 doug_newcomb at 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.



-- 
Yann Chemin
Researcher at IWMI
Skype/FB: yann.chemin