topic Re: Request for LISP - Transfer Block Attribute to Elevation (multiple selection in AutoCAD Forum

Request for LISP - Transfer Block Attribute to Elevation (multiple selection)

Anonymous — Thu, 21 May 2020 07:05:34 GMT

Dear LISP wizards,

I am having a problem with our survey drawings as road marking elevations are incorrect. I would like to request for a LISP that will transfer the value in Attribute "Z" of the block to the blocks elevation. this is a 30 km expressway with hundreds of thousands of points and doing it manually will definitely take too much time.

How this happened? I just joined the company and it seems that our survey manager gave wrong instructions to site survey engineers and CAD department from the very start of the project. please help.

I have attached a screenshot and a sample drawing for reference.

thank you so much.

Re: Request for LISP - Transfer Block Attribute to Elevation (multiple selection

vinodkl — Thu, 21 May 2020 07:20:02 GMT

Hi,

This can be achieved without the lisp by using Field.

Add "position Z" value to the attribute tag "Z".

See attachment.

Re: Request for LISP - Transfer Block Attribute to Elevation (multiple selection

Anonymous — Thu, 21 May 2020 07:58:37 GMT

Hi Vinod, thank you for your quick response. really appreciate it. but what I want to happen is the opposite. the value from the block attribute "Z" should be transferred to Position Z value.

Re: Request for LISP - Transfer Block Attribute to Elevation (multiple selection

vladimir_michl — Thu, 21 May 2020 13:32:39 GMT

See the Att2elev LISP utility on www.cadstudio.cz/freeware - just pick the attribute in an inserted block and select the blocks to move up/down (optionally remove any prefixes/suffixes from the "elevation" attribute). Please note that Civil 3D has a tool for this.

Vladimir Michl, www.cadstudio.cz - www.cadforum.cz

Re: Request for LISP - Transfer Block Attribute to Elevation (multiple selection

ChicagoLooper — Thu, 21 May 2020 14:13:49 GMT

What is the purpose of placing the block at the correct elevation?

Re: Request for LISP - Transfer Block Attribute to Elevation (multiple selection

tboehler — Thu, 21 May 2020 14:48:32 GMT

If you are working with a survey department and creating drawings with roads and points you should get Civil 3D. The points options are endless (almost). Not to mention all other civil/survey tools.

I realizde this doesn't help you today. I'll leave that to the lisp experts.

Re: Request for LISP - Transfer Block Attribute to Elevation (multiple selection

ChicagoLooper — Thu, 21 May 2020 15:06:12 GMT

Since @tboehler has opened the door to Civil3D, I agree.

Taking a 30 km expressway with hundreds of thousands of points and putting blocks at their proper z-elevation sounds like you're building a surface. I can't imagine doing this exercise for any other reason.

With C3D you not only surface creation capabilities and the ability to draw profiles, you have Point Groups, Point Styles and Point Labels. Using Vanilla Cad is like using a brick to pound a nail when you hsould be using a hammer.

Re: Request for LISP - Transfer Block Attribute to Elevation (multiple selection

Anonymous — Fri, 22 May 2020 04:50:08 GMT

I’ll try this after the holidays. Thanks.

Re: Request for LISP - Transfer Block Attribute to Elevation (multiple selection

Anonymous — Fri, 22 May 2020 04:56:14 GMT

Thanks. I said the same to the team but no one is an expert in C3D. They have been using different survey tools from trimble and pythagoras for field data post process then export it to Acad for submission.

Re: Request for LISP - Transfer Block Attribute to Elevation (multiple selection

ChicagoLooper — Fri, 22 May 2020 05:11:27 GMT

This is easily accomplished (a common exercise) in Civil3D or Map3D with xyz data Excel under 3 columns, either NEZ or ENZ. No lisp needed.