[GRASS-user] flip raster

[José María Michia]

Hi,

I've imported a NetCDF file (ETOPO1 model). The resulted raster appears
flipped vertically. How can I fix this? I try with mapcalc, without success:

- neighborhood modifier: not accept computations in offset parameter, like
map[0,total_rows-row()]
- I dont know how to query map in arbitrary coordinates, like
map(x(),-1*y())

I need advice, I do not know another way to try out.
Thanks
José María
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