Creating Points at Crossing Polylines

[estringer]

I was wondering if there is a way to create points at crossing polylines? Preferably I would want to be able to specify 2 polyline layers and get points at any intersections of polylines on those layers.

[VincentSheehan]

Could this help? Create a block with a point then use this Lisp to place the block at crossing lines.

[leeminardi · Accepted solution]

One of Lee-Mac's intersection programs may be your answer.

https://www.lee-mac.com/intersectionfunctions.html

[estringer]

Do you know if putting the point in a block will change how it is "seen" in the drawing? We are using the points for programming a Total Station and I am trying to see if there are more efficient ways to place the points.

[autoid374ceb4990]

Are you doing the programming?

If you are depending on 3rd party software and the software is capable of reading the insertion point of blocks, then create a block with one POINT and make the POINT coordinates the insert point.

[VincentSheehan]

You could explode the blocks afterwards.

[estringer]

I do not have any experience with Lisp routines so am a little confused on how Lee's work. Am I supposed to combine the two different sets of code into one file or am I supposed to create and load both?

[Kent1Cooper]

You can combine them into one file, APPLOAD that file, and use the INTERSET command that's defined in the second one.  [You don't use the function defined in the first one directly -- it is called on by the second one.]

[estringer]

I have tried combining them in the same file, once with the called function first and once with the called function last and get the same error on both. See below:

[leeminardi]

Extract the .lsp file from the attached.  Load the program with APPLOAD then give the inter command.

[estringer]

Thank you! That worked perfectly!

[estringer]

Thank you for everyones help!

[Kent1Cooper]

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@estringer wrote:

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Whoops -- I hadn't noticed that the called routine itself calls for another.  You will also need to get that function from higher on the same web page.  You can also add it into the one file, or all three can be in separate files if you make sure all get loaded.

[estringer]

This one?

[Kent1Cooper]

Yes.

[estringer]

Thank you.