Pietro Zambelli wrote > Dear Helmut, > > On 06/11/17 08:22, Helmut Kudrnovsky wrote: >> not really an answer, but the data documentation says: >> >> "Output format: GRIB 1, rotated spherical" >> >> a quick web search shows some hints to handle such data. > > Looking at the reference model manual: > > http://www.cosmo-model.org/content/model/documentation/core/cosmoDyncsNumcs.pdf > > at page 25, there are some equation to transform the rotated spherical > coordinates back and forward, see the attached image. > > Are these the hints that you mentioned in your previous reply? > > Should I convert the raster in to a x_s, y_s, z list of points and write > a function to convert the spherical coordinates (x_s, y_s) values > defining my own python script to apply the transformation function and > generate the lat, lon, z triplet of values, to be imported into a WGS84 > location? > Any better approach/idea? > > Thank you for the support.
never used such kind of data for myself; maybe it would be worth to ask on the GDAL ML how to used this kind of data. some other things I've found in the web, e.g. https://gis.stackexchange.com/questions/10808/manually-transforming-rotated-lat-lon-to-regular-lat-lon https://gis.stackexchange.com/questions/64210/transforming-regular-lat-lon-to-rotated-lat-lon http://jgrib.sourceforge.net/docs/rotLatLon.pdf [...] they looks similar you've found. ----- best regards Helmut -- Sent from: http://osgeo-org.1560.x6.nabble.com/Grass-Users-f3884509.html _______________________________________________ grass-user mailing list [email protected] https://lists.osgeo.org/mailman/listinfo/grass-user
