[GRASS-user] workflow to import/georectify binary remote sensing data

Markus Neteler neteler at osgeo.org
Thu Aug 16 08:17:38 PDT 2018


Hi Peter,

On Wed, Aug 1, 2018 at 10:29 AM "Peter Löwe" <peter.loewe at gmx.de> wrote:
> Hello list,
>
> here is a question about what's currently the most effective way to ingest binary raster data which need to be georectified.
>
> The data source are calibrated weather radar precipitation rasters (lots of them), which come in a well documented binary format (+ GCPs), which is not (yet) supported by gdal.
>
> A "classical" approach could be:
>
> 1) Create XY location as source
> 2) Create LatLon location as target

(probably a metric projection would be better?)

> 3) Ingest data via r.in.bin (to skip over file header) into XY location
> 4) Use GCP to set up i.rectify within XY location
> 5) Apply i.rectify
> 6) Discard XY-location and continue work in LatLon location
>
> In there a more effective way, probably without using a XY location ?

Perhaps the new:
grass75 --tmp-location ...

See
https://grass.osgeo.org/grass75/manuals/grass7.html#batch-jobs-with-the-exec-interface
--> Using temporary location
?

It also supports XY locations and all could be done in a script.

Best
Markus


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