I am trying to use a file of data that have 1.8 million of points, and is rally dificult with Autocad Civil 3D, the fiel open with the Autocad, but when I try to erase some of that points, the software is frized.
the picture attached contains a lot of points with one blue line, the points on the blue line are the points thar I am interesting, and the other points are the points that I want to erase.
This looks like a Lidar data file. What are you trying to do with it?
Civil3d has tools for working with point data without importing it into the drawing, and tools for filtering these large point files so that data outside of your boundary is completely ignored.
We need more information about which version of the software you're using, and what you want to use the data for.
the problem is that Excel don't manage that info because is very large. I try with point clouds, but the point clouds can't be modified, erase some of them or cut.
The OP wants to send the resulting point set to another user - that's going to be the problem.
Two possible solutions, after the surface is built from the limited data set:
Sorry for the late, gentlemen.
To clip a point cloud by boundary, you don't need Autocad at all: use the free, terrific Lastools by M.Isenburg.
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