[mapserver-users] Use Ground Control Points from GeoTIFF

[Steve Lime]

What does the mapfile look like?

On Tue, Sep 1, 2020 at 10:26 AM Jesper Kempe <jesper.kempe at gmail.com> wrote:

> Hi
>
> I have a GeoTiff file that gdalinfo presents like this:
>
> gdalinfo sat.tif
> Driver: GTiff/GeoTIFF
> Files: sat.tif
> Size is 10474, 10717
> Coordinate System is `'
> GCP Projection =
> GEOGCS["WGS 84",
>     DATUM["WGS_1984",
>         SPHEROID["WGS 84",6378137,298.257223563,
>             AUTHORITY["EPSG","7030"]],
>         AUTHORITY["EPSG","6326"]],
>     PRIMEM["Greenwich",0],
>     UNIT["degree",0.0174532925199433],
>     AUTHORITY["EPSG","4326"]]
> GCP[  0]: Id=1, Info=
>           (0,0) -> (27.5783052509812,65.9184735836942,229.992792810313)
> GCP[  1]: Id=2, Info=
>           (524,0) -> (27.1416007200269,65.9731480840222,172.994255514815)
> GCP[  2]: Id=3, Info=
>           (1048,0) -> (26.7005564512604,66.0268770755367,152.994545626454)
> GCP[  3]: Id=4, Info=
>           (1572,0) -> (26.257537545879,66.0793551447287,131.994995356537)
> GCP[  4]: Id=5, Info=
>           (2096,0) -> (25.8102107755995,66.1308402121171,163.993212723173)
> ....
>
> with 482 GCPs.
>
>
> The file opens ok in Qgis and is located in the right location.
> But I can´t in any way get it to show correctly in Mapserver.
>
> Is this possible to do? Or do I have to gdalwarp the file to a known
> projection and set the PROJECTION of the layer?
>
> Thanks
> Jesper
>
>
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