Create contour map from XYZ coordinates - LISP

[cool.stuff]

Hi!

I need to generate a contour map from XYZ coordinates.
However, I need it to be flat and the elevation should be distinguished by color.

Here is a picture of what I need:

It would be possible to define the number of ranges and its color?

I can give the input in CSV or other format.

I've found some softwares online but are expensive..

I've only found this in GIS softwares but if there is any lisp to do it, it would be great! 🙂

Many thanks for you attention and help!

Best regards

[devitg]

@cool.stuff , please upload your sample.dwg and sample.csv 

[hak_vz]

You can download CTL from this link, and it has some options you are looking for. It's free and works well.

[lena.talkhina]

Hello @cool.stuff  !

Great to see you here on LISP Forum.

Did you find a solution?
If yes, please click on the "Accept as Solution" button as then also other community users can easily find and benefit from the information.
If not please don't hesitate to give an update here in your topic so all members know what ́s the progression on your question is and what might be helpful to achieve what you ́re looking for. 🙂

[Sea-Haven]

Obviously CIV3D can do rainbows.

[Sea-Haven]

Looks interesting so many people want free TIN.

[Yokaash_Selvam]

Hi could you please share the commands of this CTL file since i am working in the AUTOCAD 2026?

[hak_vz]

Load compiled lisps (.fas) and run CTL, options are defined in description and are selected as 1 2 3....8. Haven't been using for long time but it should work.