AutoCAD Civil 3D

[#1]

Hello guys,

How can I know the memory size of a TIN or DEM surface? I have a very dense points data to create a surface and I would like to test what option would be the best: simplify the surface removing points or make it raster...

Thanks!

[#2]

One option would be to create the surface in a new, clean drawing.  Then data shortcut in the surface to your project files.  This will keep your drawing file sizes to a minimum and your memory usage down.

[#3]

You could also copy the drawing with nothing but the surface in it and test the different methods of reducing the file size.

[#4]

Also, remember that the drawing size will be impacted by the surface style in use when last saved.  For example, your saved drawing will be smaller if the surface style is a "No Display" style versus a style which displays contours and TIN lines.

HTH.

[#5]

Thanks guys, what you are suggesting can indicate the proportional impact of each surface... and maybe it should be good enough.

But I was expecting to calculate the TIN memory size by the number of triangles and its size in bytes vs the number of pixels and its size in bytes. So I guess I should write a VB code to be able to get the number of triangles (TIN) and valid pixels (DEM).

Isn't this the memory size of these ARX objects?