How to cut a raster dem file ?

[Anonymous]

How to cut a raster dem file generated by this tool http://www.youtube.com/watch?v=GZj4nHpcMDw ?

I would like to trace a line on the 3D raster surface, then cut the surface along this line. At the end, I want to be able to move each part of the 3d surface independantly.

Do you think I can do it with autocad?

thanks for your help

[Alfred.NESWADBA]

Hi,

what development-environment do you prefere?

Do you have lib's for accessing the point-clouds directly or what type of point-clouds do you have?

At least the steps for me would be to play with the points-clouds before I create a Map3D-surface.

- alfred -

[Anonymous]

I have no preference for the development-environment.

For now, I use Riscan Pro (Lidar software) to process point cloud then from this software I export in Las format. I use Autocad map 3d to generate .isd and the raster dem file...

[Alfred.NESWADBA]

Hi,

>> For now, I use Riscan Pro (Lidar software) to process point cloud

In that case it's more easy to use work with the points, select and move them whereever you want them to have and when you are finished you can transfer them to Map3D and create a Map3D-Surface.

Map3D-surface is based on fixed georeferenced coordinates, so you have a lot of options for how to import them, how to represent them on display, but no option to move or modify it.

It's just visualization of existing data ... that's the reason why I suggest to do the work with the points. And as you have tools to work on the points ==> use them.

- alfred -