[GRASS-user] imported .tif maps lose all data

[Rich Shepard]

On Sat, 25 Sep 2021, Helmut Kudrnovsky wrote:

> try the same steps as I've done (with adjusted paths) and _post the
> command and the command output_ here.
> - g.region -p
> - r.in.gdal input=columbia_2010_e_dtm_35.tif output=columbia_2010_e_dtm_35
> - g.region -p -a raster=columbia_2010_e_dtm_35 align=columbia_2010_e_dtm_35
> - r.stats -l input=columbia_2010_e_dtm_35
> - r.report map=columbia_2010_e_dtm_35

Helmut,

Results in attached 574 line file. There are some cells with data, but most
without data (82%).

I can display the data with cells; for this one map they appear to cover
only the river and not the terrain north of it. But, this is only one of 77
files.

Since this test worked I need to figure out why it didn't work when I
imported all 77 .tif files using the bash script. Ah! Thought: when
r.in.gdal imports all 77 files where does GRASS get the values for setting
g.region -p?

If g.region -p displays the region of last map imported then the other 76
maps will be outside that region. Is there a module that uses all maps in
that mapset to set the region, or is that supposed to be done by default?

Thanks very much,

Rich
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