Hi Rafael, That is because there are different kinds of Geotiff files. The Geotiff format is quite versatile and can contain anything from 1-bit integers to 32-bit float numbers. It can also handle single-band grids (a DTM for example) or multi-band rasters (an RGB image for example). Unfortunately, Oasis Montaj can only import the latter kind (the pictures). If you have not got ArcGIS or QGIS for converting between formats, my suggestion is to use the GDAL utilities (http://www.gdal.org/). You can convert the Geotiff DTM to an ASCII grid with this command: gdal_translate -of AAIGrid DTM.tif DTM.asc
Then import the DTM.asc file in Oasis with Grid and Image > Utilities > Import ASCII grid. A word of caution here: GDAL would provide the coordinates of the corner of the bottom-left pixel. In Oasis, you need to enter the coordinates of the centre of the pixel, i.e. add half a cell size to the numbers. Regards, Joseph Barraud, Interpretation Geophysicist Getech, Kitson House, Elmete Hall, Elmete Lane, LEEDS, LS8 2LJ, UK --- Forum archives can be accessed here: http://lyris.geosoft.com/read/?forum=geonet You are currently subscribed to geonet as: [email protected]. To subscribe or unsubscribe from any of our forums, select the User Forum selection on the Geosoft Community page: http://www.geosoft.com/support/community/forums/register/
