[gdal-dev] gdal_translate for nc --> tiff. Coords seem to change?

[Even Rouault]

David,

providing a link to a such file could be useful for investigation

Even

Le 28/06/2021 à 20:59, Hill, David Foster a écrit :
> Hello.
>
> I am new to GDAL, and have spent the past two weeks exploring its use for (largely) nc —> tiff conversions. I am puzzled by a few things, however. I have a .nc file and when I use
>
>>> ncdump -c file.nc
> the coords are shown to me. The min x is 487200 and the min y is 4690100. The grid size is 100 m. If I then do:
>
>>> gdal_translate -of GTiff file.nc file.tif
> and then
>
>>> gdalinfo file.tif,
> it shows the ‘lower left’ corner coordinates as
>
> 486790, 4690050
>
> For the y coord, I can see how this makes sense…assume that ncdump is giving coords of the grid cell centers, not the ‘corner’ of the grid cells. Thus, the 50 m difference. For the x coord, the values are like 410 m different, so I am puzzled about that.
>
> I am sure this is an overly simple question, but I would welcome any tips / guidance on what I am doing wrong. Thank you.
> ---------------------------------------------------
> David F. Hill
> Professor
> Civil and Construction Engineering
> Oregon State University
> 220 Owen Hall
> Corvallis, OR 97331
> 541.737.4939
> david.hill at oregonstate.edu
> http://www.engr.oregonstate.edu/~dfh
> ---------------------------------------------------
>
>
>
>
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