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Ho to create mesh with trasparent area

S

SprightlyOldMan

Messages
64
Country
italy
Hi,
i'm trying to create mesh from hi res DEM on boundary state line, like:
5hj9xv9l.png

The problem is: how to insert transparent area in bgl, like blend mask in photoreal?
How georeferential tiff must be?
With invalid area (like in image) and multisource with blend mask, result is 1 meter
Could anyone help me?

Thank you
Chris
 
Hi,
problem solved!
nullvalue = global mapper elevation for no data value

[Source]
Type = GeoTIFF
Layer = Elevation
SourceDir = "D:\tmp\GIS\TinItaly\tif"
SourceFile = "test02.tif"
NullValue = -32767

:cool:
 
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