Transform
GTB.Transform History
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Command Call with 4 different transform methods applied
Command Call with 4 different transform methods possible
Performs different transformations of an input dataset
Input Data - Elevation
Input Data - DEM (Raster Dataset) - a grid representing a continuous surface
Four transformation methods have been implemented:
- SQR Transform sqr ( input + 0.5 ) to take care of zeros
- Logit Transform (ln ( input / 1 - input ) )
- Z-Transform ( input - mean input ) / standard deviation of input
- Z-Transform2 according to Wendroth et al. (2002): ( input - mean input - 2 x standard deviation of input ) / 4 x standard deviation of input
transformed raster dataset - a grid representing a continuous transformed surface
transform/elev.jpg
http://www.ai-relief.org//functions/dataprep/transform/elev.jpg%%
transform/command.jpg
http://www.ai-relief.org//functions/dataprep/transform/command.jpg%%
transform/logit.jpg
http://www.ai-relief.org//functions/dataprep/transform/logit.jpg%%
transform/sqr.jpg
http://www.ai-relief.org//functions/dataprep/transform/sqr.jpg%%
transform/ztransform.jpg
http://www.ai-relief.org//functions/dataprep/transform/ztransform.jpg%%
transform/ztransform2.jpg
http://www.ai-relief.org//functions/dataprep/transform/ztransform2.jpg%%
(:div input:) INPUT
Input Data - Elevation transform/elev.jpg
(:divend:)
(:div commandwindow:) COMMAND
Command Call with 4 different transform methods applied transform/command.jpg (:divend:)
(:div results:) RESULTS
LOGIT transform of Input DEM transform/logit.jpg
Square Root transform of Input DEM transform/sqr.jpg
Z-Transform of Input DEM transform/ztransform.jpg
Z-Transform2 of Input DEM transform/ztransform2.jpg
(:divend:)