[GRASS-dev] Re: GRASS 7 status overview

[Soeren Gebbert]

Hello,
i have created a simple graphical model of the r.external work-flow,
attached as PNG file. (for presentation purpose)
If this is correct, i can add this to the help-pages or Wiki?

Soeren

2010/2/15 Glynn Clements <glynn at gclements.plus.com>:
>
> Michael Barton wrote:
>
>> >> It is unclear how r.external.out works. Does it make a GDAL-compatible
>> >> file appear as a GRASS raster in a mapset? If so, shouldn't this be
>> >> r.external.in? (i.e., it makes an external raster usable by GRASS)
>> >
>> > r.external.out causes new raster maps to be created as files via GDAL.
>> >
>> > Whereas r.external turns a specific file into a GRASS raster map,
>> > r.external.out enables a mode whereby all new rasters are created as
>> > files via GDAL.
>> >
>> > It creates a key-value file named "GDAL" in the mapset directory
>> > containing various parameters (output directory, file format, creation
>> > parameters). If this file is present, Rast_open_*_new() and
>> > Rast_put_*_row() go via GDAL.
>>
>> So the files can be opened and used subsequently as GRASS files even
>> though they are created in a non-GRASS format (e.g., geotiff)?
>
> Yes. Files created this way are automatically linked as GRASS rasters
> as if by r.external.
>
> --
> Glynn Clements <glynn at gclements.plus.com>
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>
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