julian_ro

workflow: SRTM data preparation for Petrel/Gocad

Discussion created by julian_ro on Apr 9, 2013
Latest reply on Oct 22, 2013 by ecl_jepps_c
hi,
I spent some time to prepare SRTM data for generating a topographic 3D model in Petrel and Gocad.
Couldn`t find a lot in this forum but finally I was successful...
Maybe someone can save time and nerves with this workflow:


1. Change coordinate system of raster data to UTM
- Import SRTM file (.tif)
- Data Management Tools > Raster > Resample (�??Raster projizieren�?�)
- Use projected system > UTM > WGS 1984 > your area
2. Cut Raster to area of interest
- Create polygone shapefile with area
- Data Management Tools > clip raster (�??Ausschneiden�?�)
- Safe as .tif
3. Convert raster dataset to point feature
- 3D Analyst > Conversion Tools > Raster to Point (�??Raster in Punkt�?�)
- Safe as .shp
4. Export data as .txt (check if correct coordinate system)
- Spatial Statistic Tools > Export Feature Attribute to ASCII (�??Feature-Attribut nach ASCII exportieren�?�)
- Activate �??GRID-CODE�?� and save as .txt
- If necessary change , to . in text file
5. Text file should look like this

725027.486 4250944.341 1238.000
725111.765 4250944.341 1248.000
725196.044 4250944.341 1262.000
.
.
.
Import to Petrel/Gocad as XYZ

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