[GRASS-user] rshepard at appl-ecosys.com sent you a file

[Markus Metz]

On Mon, Jun 11, 2018 at 10:55 AM, Helmut Kudrnovsky <hellik at web.de> wrote:
>
> >Now to find why it's not working the same way here with 7.5svn release
>
> GRASS 7.4.0 and GRASS trunk seems to behave differently in set up this
> incomplete CRS in this case.

I can not confirm, because ...
>
> GRASS 7.4.0 produces:
>
> g.proj -p

> -PROJ_INFO-------------------------------------------------
> name       : unnamed
> ellps      : grs80
> proj       : lcc
> lat_1      : 43
> lat_2      : 45.5
> lat_0      : 41.75
> lon_0      : -120.5
> x_0        : 399999.9999999999
> y_0        : 0
> no_defs    : defined
> -PROJ_UNITS------------------------------------------------
> unit       : user-defined
> units      : user-defineds
> meters     : 0.3048

while trunk produces
-PROJ_INFO-------------------------------------------------
name       : unnamed
ellps      : grs80
proj       : lcc
lat_1      : 43
lat_2      : 45.5
lat_0      : 41.75
lon_0      : -120.5
x_0        : 399999.9999999999
y_0        : 0
no_defs    : defined
-PROJ_UNITS------------------------------------------------
unit       : International Foot
units      : International Feet
meters     : 0.3048

identical, only that trunk is able to resolve the name of the unit
>
> despite the name, the CRS looks ok.

I agree, projection information is recognized.

Apparently GDAL uses the projection information embedded in the dataset. I
guess because GDAL finds some info, it does not look further in the
.aux.xml file (no need to do so).

Markus M

>
> looking at the gdalinfo output of the raster:
>
>  >Min=206.380 Max=1157.470
>  >NoData Value=-3.4028234663852886e+38
>
> loading this raster data into e.g QGIS, it shows the same as in GRASS,
>
> >When I load that bare_earth raster map it's the same as before: a
> >multicolored wedge along the north and a wide purple rectangle along the
> >west side (see attached).
>
> most of the central part of the raster is NoData; thus it seems to be ok
as
> it is.
>
> further steps may be:
>
> (1) ask your data provider for data with a complete SRS information
> (2) ask on the GDAL ML if it is maybe a GDAL issue about the SRS
information
> (3) ask your data provider if it is correct that most of the raster is
> NoData
>
>
>
> -----
> best regards
> Helmut
> --
> Sent from: http://osgeo-org.1560.x6.nabble.com/Grass-Users-f3884509.html
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