meta data for this page

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revisionPrevious revision
Next revisionBoth sides next revision
scientificdata:start [2021/09/01 15:26] – christianscientificdata:start [2021/09/01 15:28] – [Translating gridded data from seismic interpretation to GMT-compatible format] christian
Line 17: Line 17:
 From Petrel one can usually export ''ZMAP+'' formatted grids in a given projection. It pays off to use a projection which is GDAL/PROJ compatible so that one can simply use the [[https://epsg.io|EPSG]] codes to reproject grids. I found it easier to use the GDAL-stack instead of going forth and back using GMT and/or GIS. Here's the basic steps I usually go through: From Petrel one can usually export ''ZMAP+'' formatted grids in a given projection. It pays off to use a projection which is GDAL/PROJ compatible so that one can simply use the [[https://epsg.io|EPSG]] codes to reproject grids. I found it easier to use the GDAL-stack instead of going forth and back using GMT and/or GIS. Here's the basic steps I usually go through:
  
-  - ''gdal_translate -of netCDF -a_srs EPSG:12345 INPUT_grd_UTM_zmap+.dat OUTPUT_grd_UTM.nc''+  - ''gdal_translate -of netCDF -a_srs EPSG:12345 INPUT_grd_UTM_zmap+.dat OUTPUT_grd_UTM.nc'' (chose from GDAL's exhaustive [[https://gdal.org/drivers/raster/index.html|raster drivers]] list)
   - Check whether the output is correct using ''gdalinfo OUTPUT_grd_UTM.nc''   - Check whether the output is correct using ''gdalinfo OUTPUT_grd_UTM.nc''
   - Re-project grid using '' gdalwarp -t_srs EPSG:4326 OUTPUT_grd_UTM.nc OUTPUT_grd_EPSG4326.nc''   - Re-project grid using '' gdalwarp -t_srs EPSG:4326 OUTPUT_grd_UTM.nc OUTPUT_grd_EPSG4326.nc''