[Qgis-developer] terrain plugin and gdaldem different use of z-factor and scale?

[maning sambale]

For creating hillshades/relief in a Lat/Lon CRS, the option for:
 - Terrain plugin is to use a Z-factor=111120
 - GdalTools DEM is to use Scale (ratio of vert units to  horiz.)=111120

More so GdalTools DEM is also using Z-Factor for vertical exaggeration.

This is very confusing for newbies.

-- 
cheers,
maning
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