Jump to content
  • 0

cut a hole in dtm terrain model


bernas

Question

10 answers to this question

Recommended Posts

  • 0

I believe that in order to subtract a solid from a site model you will need to lose all the parametric abilities of the object. Not sure why you would want to do that?? Why not use a Site Modifier object instead? If, for example, you create a 'pad' of the desired shape (shape of the hole) with a 'boundary' that is just slightly (and I mean very very slightly) larger than the 'pad', and set the pad's elevation to cut into the site model as deep as needed, when you update the site model you should have a hole in the desired location...

Link to comment
  • 0

I try to explain better: i made de dtm model. and now i must subtract the area where the building is. should i have made the dtm in a different way? predicting the "negative" of the building? if that's it, what if the building changes? i hope u can help me or give me a link which can do.

tks again

Link to comment
  • 0

Good evening,

I've made a terrain from stake points but I want to trim it now to the exact site boundary - a polyline which I've projected onto the top surface of the terrain. I've tried extruding a solid through the terrain then subtracting the solid which leaves the right form but without any further editing capabilities (as mentioned above) or fill colour for that matter.

I'd like 90 degree edges at the skirt/hull of the model too.

Any pointers greatly appreciated.

Thanks

Rupert

Link to comment
  • 0
28 minutes ago, crossley said:

Good evening,

I've made a terrain from stake points but I want to trim it now to the exact site boundary - a polyline which I've projected onto the top surface of the terrain. I've tried extruding a solid through the terrain then subtracting the solid which leaves the right form but without any further editing capabilities (as mentioned above) or fill colour for that matter.

I'd like 90 degree edges at the skirt/hull of the model too.

Any pointers greatly appreciated.

Thanks

Rupert

 

Edit the site model crop, you can replace the crop with your poly line.

Link to comment

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Answer this question...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...