Sbuilder 0 altitude not 0 ?

Hi Mario:

If the surrounding Hydro polygons are not also set to 0 Meters AMSL, that could also cause this anomaly. :scratchch

One often needs to re-work such Hydro tiles using an "Exclude and Replace" protocol for involved QMID-11 tiles.

You may wish to verify what got compiled by SBuilderX into the CVX vector BGL by decompiling it into a *.BLN output file format using Patrick Germain's CvxExtractor utility, then inspect the *.BLN X,Y,Z (Lon,Lat,Alt) polygon vertex point values with a text editor.

PS: You may wish to review the excellent tutorials by Luis Feliz-Tirado cited here:

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