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3d length calculation

772893May 13 2010 — edited May 18 2010

I have some road data in Gauß-Krüger zone 5 projection with the associated mean-sea-level heights.
I've defined a compound coordinate system taht consists of a vertical and projected coordinate system. Taking the transverse-mercator projection into account is it mathematically correct to calculate 3d length of those lines using the heights stored with the projected geometries? Or would it be more accurate to convert the data back to the geographic coordinate reference system (WGS84 for instance) with ellipsoidal heights to do this calculation? Will Spatial do 3d length calculation with geographic coordinate system?

This post has been answered by Bkazar-Oracle on May 13 2010

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Added on May 13 2010

#database-key-features, #spatial

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