[GRASS-user] Importing .tif

Markus Metz markus.metz.giswork at gmail.com
Tue Jul 17 00:07:04 PDT 2018


On Tue, Jul 17, 2018 at 7:57 AM, Nikos Alexandris <nik at nikosalexandris.net>
wrote:
>
> * Helmut Kudrnovsky <hellik at web.de> [2018-07-14 04:19:53 -0700]:
>
>>
>>> I did that before too. Did you also note that it takes "too much" >time
to
>>> create the Location using the '.tif' file?
>>
>>
>> it didn't take a long time to create the location.
>
>
> For completion, using the same sample I used first in this thread:
>
> ```
> time grass -c int_43120C4404.tif
/geo/grassdb/onsight/nad83_cors96_utm_z10/
> ..
> real    0m25.083s
> user    0m0.184s
> sys     0m21.699s
> ``
> which is unusually long.

Something must be wrong with disk IO. Here, it takes 0.09s
>
> Seeing the other branch of this thread, about using the .tif file: in
> this case, there is something in the image's geo-metadata that does not
> play nice to create a new Location. Thus, it's best to use one of the
> Shapefiles.

Not a good idea because the shapefiles and the tifs do not always have the
same SRS. Please use the same datasource to be imported directly to create
a new location.

Markus M
>
> Nikos
>
> [rest deleted]
>
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