Checking Z coordinates

[Robert.Hall]

Is there a way to check that the z coordinates of all objects
match using autolisp?

I constantly receive 2d data that has a z elevation not equal to zero.
I can rotate the view and convince myself the data is coplanar, however,
when I have splines, I can never be completely sure.

[GuinnessCAD]

Is there a way to check that the z coordinates of all objects
match using autolisp?

I constantly receive 2d data that has a z elevation not equal to zero.
I can rotate the view and convince myself the data is coplanar, however,
when I have splines, I can never be completely sure.You could do a "mega move"

(command "._move" "p" "" "0,0,1e99" "")
(command "._move" "p" "" "0,0,-1e99" "")

That would wipe out any z elevation. Or maybe use the flatten command in express tools.

[Robert.Hall]

You could do a "mega move"

(command "._move" "p" "" "0,0,1e99" "")
(command "._move" "p" "" "0,0,-1e99" "")

That would wipe out any z elevation. Or maybe use the flatten command in express tools.

That is an interesting idea.
I will have to try that out.

As for flatten, sometimes it destroys all the linework.
I have instances where all of the data is crunched about 1 single line.

Any other suggestions?