How to create Elevation Triangulated Irregular Network (TIN) in Global Mapper?

eftaxiaskostas

Good evening.

I have a DEM file and I want to create a TIN with the elevation data, but did not find this option yet. The only way to do this is to create Elevation Grid from contours and tick a specific option there about "Creating TIN in seperated layer" or something like that (sorry for not remembering, the pc is not near me). By this option i cannot control some parameters like the number of triangles, the maximum length of each vector etc. Also this method requiers contours, so I need to Generate them from DEM and this takes more time.

Please, any help?

Thank you!

eftaxiaskostas

P.S. I found the method Exporting 3d Surface data, but the result is in square elements, not triangles!

Mykle

DEM data, by definition, are a rectangular grid of values. 
These data are probably the RESULT of creating a grid FROM a TIN. 

If your "DEM" is really something different, my statement would not be accurate.
However, you say that your "TIN" is square elements, so it sounds like you do have a DEM. 

If you need further information, we'll need to know more about what you need to do with the TIN.

eftaxiaskostas

Thanks Mykle for your answer.

I think DEM means Digital Elevation Model and does not has to do with the grid.