script to delete specific length lines

[avfy]

Hello all, I would love if someone that knows more about lisp than myself could help me out with this.
I have dxf files that are generated from a third party program which have lines with 3 specific lengths(3.4, 5.2, and 6.1) that need to be deleted every time a new one is generated. Also, it creates lines that are red which all need to be deleted.
I have been using quick select to accomplish this but wish I had a lisp routine that could automate it. Can someone put together a simple lisp that could delete these 3 specific lengths and all red color lines?
Thank you

[NukeCad]

We have never really had a good lisp expert here.

I suggest that you go over to CadTutor where as well as many knowledgeabe lisp users you will find one of the acknowledged best lisp for AutoCad writers in the world, who's happy to help people.
https://www.cadtutor.net/forum/forum...-lisp-amp-dcl/

PS. This isn't an advert, I'm the moderator here and squash adverts, it's recommendation for where to get the best help for your question.

[avfy]

We have never really had a good lisp expert here.

I suggest that you go over to CadTutor where as well as many knowledgeabe lisp users you will find one of the acknowledged best lisp for AutoCad writers in the world, who's happy to help people.
https://www.cadtutor.net/forum/forum...-lisp-amp-dcl/

PS. This isn't an advert, I'm the moderator here and squash adverts, it's recommendation for where to get the best help for your question.

Thanks for the heads up and recommendation.