Trimble Business Center

Hi!

Right now i have a huge problem. I have made a surface from a pointclud (ground) and made contorus on that 0,5m apart. When i am trying to export only the contours in a dwg it is 160(!)MB. I tried project cleanup without result, i gave all of the lines the height "?" so the 3D wouldnt be a problem and the it got down to 130mb. How could i do this? it should not be any bigger than a couple of kb i think, its only lines. The projectfile is here and i think that the surface and contours should be in there even that the project library is missing. 

Any one knows how to do this?

1) In the file there are two copies of each contour line.  

2) The contour lines are linestrings due to your editing.  A contour line is a CAD Polyline.  A linestring stores more information so that it  can have an elevation at each node and hence takes more memory.  Erase all of the contour lines by layer.  

2) Run project cleanup and get rid of the unused block definitions, zero length lines, etc.  You have a lot of stuff from the autocad files that you don't need.

3) Save your file.  It should be much smaller than you started with.

3) recreate the contours (you should have only one set)

4) export the contours as needed to DWG.

This should make a file that is 1/10 the size, hopefully about 10 mb.

When working with point clouds you may want to limit the number of points used to make the surface either by number or distance between points.  Too many triangles creates contours with lots of verticies and makes them look jagged.

You could also try this and see if it makes a difference.  Explode the contours to linestrings, then run project cleanup.  You'll want to use the filter line vertices feature to weed the line vertices down to what you think is an acceptable level to still approximate your surface.  Then export those and see what happens.  

Here is a tip! Without doing no cleanup or anything i was able to decrease the size from 5mb to 1mb. Just export the curves as a dwg, open a new project, import the dwg and export it again. Done! @Corbitt Shoffner @Tim McClannahan @Alan Sharp

Have a nice day!