AutoCAD Map 3D

[#1]

Good moorning:

I´m working whit a LAS points draw an i want cut only a little of space in my draw.

i have 500 points in this format and only i need 100.

Somebody can tell me how can i do that? I want delete some LAS points of my draw

Thank you very much for your colaboration

[#2]

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mkl1987 wrote:

i have 500 points in this format and only i need 100.

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Sir, a .LAS file contains millions of points, not only 0.5k...

[#3]

thank you very much but i knew the LAS files have a millions of points, the 0.5K points was only example.

Do you know how can i select and cut only a freatured area?

[#4]

Well, I guess you can't crop a .LAS file in Autodesk environment, while it's possible with opensource software.

A clever workaround would be the following:

1. download a trial version of Autocad Civil3D  
2. import and index your point cloud
3. create a surface based on it
4. add a "cutting" boundary to that surface.
   
   You'll get no cropped .LAS file, but better than nothing, sir.

[#5]

I was just working on a Lidar file earlier today in MAP 2012 and noticed that there was a command to do a Spatial Filter when indexing the file.  Unfortunately, it's another function of MAP that doesn't work very well.  I kept getting error messages and gave up on trying to do a location filter.

[#6]

If you were to consider third party software, MapWorks Surfaces contains a Mass Points Processor that will let you select multiple LAS files and a bounding object or rectangle.  If a LAS file hits outside the boundary it's ignored completely (for speed).

[#7]

I tried your sistems and i got my objetive whit Global Mapper whit autocad map 3D was imposible.

Thank you very much to everybody for help me