Converting Points Error Message= Invalid Selection Set

Let's see what you've got. Can you post your drawing? (Might need to post a link to DropBox, WeTransfer, etc...)

Dave

For sure here is the file

https://mega.nz/file/ck1WAChb#EPlH1qg_Z7-pj3ZnhpxLhRo_7QFyhGUNHLKr68-vk2g

What kind of points are those??ÿ I opened in Carlson, and tried all the different point conversion routines, but nothing really worked.?ÿ Just points, 1 & 2 got created

Those are blocks, not points, which is why it's returning the invalid selection set error.

Also each of those blocks is at zero elevation, which means adding them as blocks will just generate a flat surface at zero elevation.

(Edit to add: the yellow crosses appear to have an elevation, but the circle/cross points do not.)

If it's not possible to get a PNEZD file to import, I would use the DATAEXTRACTION command to pull out the NEZ values and reimport as actual points. Then you'll be able to generate a surface with correct elevations.

As you see one is block with attributes but it has elevation and the other also has an elevation.

@johnymal?ÿ

Look at the "Position Z" value for the attributed block under the Geometry section - they're all zero.

It's been a long long time since I have had to mess with this, but I just remembered the "Move Blocks to Attribute Elevation" command. That will let you pick the H field and use it for the elevation of those blocks.

Once that is done both types of blocks should have elevations.

Then all you need to do is add all of those blocks to the surface - be sure to add them as blocks, not as points (use the Add Drawing Objects not point files or point groups).