Hi everybody,
So Im having problems with the maptrim command using CAD civil 3D. Everything work as expected if I trim inside the boundary using the select automatically option but when I select trim outside the boundary with select automatically it delets nothing. However when I select trim outside boundary and select the whole area by selecting manually it works as intended. It appears as I cant combine select automatically and to trim outside the boundary. Anyone who knows how to solve this problem? I appreciate all the help I can get 🙂
What version of Civil 3D?
As a workaround you can try EXTRIM.
Allen Jessup
CAD Manager - Designer
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You are running Civil3D and you are using MAPTRIM command from the Map3D toolset, correct?
First, draw your Boundary by drawing a 'closed polyline.'
<<It's a lot easier to define your boundary using a polyline that you draw beforehand.>>
If want to use the Select Automatically option to trim your objects, make sure your Trim Method is set to TRIM OUTSIDE BOUNDARY as shown above.
Here's a old post (dated 2017) from Jerry Bartels (Civil Immersion blog) regarding >>MAPTRIM<<.
Chicagolooper
Im running the 2023 version. Thx but when using extrim doesnt delete everything outside the boundary for me. It only removes the lines that is touching the boundary.
Thank you for your response.
That is correct. This is the selection Im making
I select me drawn rectangle as boundary. The lines are polylines. It delets nothing outside the boundary. But everthing works when choosing trim inside boundary or when I manually select everything on screen. I really have no Idea how to fix it. Of course I could just manually select everything every time but I would like to find a way for the command to work and understand what has gone wrong.
Object that cannot be trimmed
Check "delete" instead of "ignore".
It works as expected for me in 2024. Can you post your drawing with the boundary rectangle or a portion of the drawing?
Do you get this message after hitting OK in the Maptrim Dialog box?
Allen Jessup
CAD Manager - Designer
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Sure I have added the dwg of just a random drawing with the same problem. Does not work for me.
Yes I get that message. Thx for trying to help.
That could be a problem but the command does not work at all for me so it does not delete anything, nothing in layout gets deleted even if I dont lock layers used in the layout.
OK, multiple TRIM actions for the same object, this does not work as expected with MAPTRIM.
I would suggest to run MAPCLEAN first and break objects that cross the rectangle.
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