GeoTiff From XS

[Anonymous]

Question to All,

Does anyone know the exact method that RAS uses when creating a terrain from cross sections?

My main questions revolves around the final input which is the desired cell size. Is this cell size linearly interpolating from XS to XS at the cell spacing at which you define? How does this cell spacing impact the definition of your cross section from left to right (if i have data points at every 1-ft and choose a 3ft grid cell spacing does it simplify my 1D cross section for terrain production?

Does it use DS reach lengths whatsoever in the creation of this terrain?

Ive noticed interpolating helps generate a much more representative terrain prior to generation, just thought id ask a few questions that i havent seen asked before.

[cameron]

I believe it uses the interpolation surface TIN that gets created (under cross-sections in Mapper) and converts it to a raster using a sampling technique at the size you specify.

If you interpolate a lot of cross-sections, you have more control over what the terrain looks like as you can add breaklines to the the interpolated cross-sections so it will look better.

The interpolation surface is linearly interpolated between cross-sections, but you can control it a little bit with the edge line layer in Mapper.

It uses the location of the cross-sections to determine everything and I do not believe it uses reach lengths at all.

[Anonymous]

Great. Cameron Thanks for your response. Was just a question that always lingered that i thought id pose

[Author]

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