Things drawn in different Z planes

[MrTapir]

Hello, I have a drawing that has some OS mapping xref'd in. For some reason certain things that I draw or xref in come in at a different height (even though its supposed to be a 2D drawing). For example, if I want to measure the width of a road that I know for a fact is 7m wide, it will tell me its 35 metres wide because its measuring a point up in the air so to speak.

 

On closer inspection this seems to be because the OS mapping is set at an elevation of approx 35m.

 

Is there a way to get everything to the same Z plane, I guess I'm thinking like Photoshop's flatten command? The mapping is made up of 7267 individual lines unfortunately so I can't change the elev to 0 in the properties box.

 

Thanks

 

Rich

[RobDraw]

With LT, your options are limited and I'm not familiar with what you don't have. In the properties box, can you change the start and end Zs to 0? If not, do you have the "FLATTEN" command?

[ReMark]

You might try using the CHANGE command. It has an option called ELEVATION. After making your selection change the elevation of all objects to "0".

[MrTapir]

I think changing the z value would definitely work as I tried it with one line, but I dont want to have to do that over 7000 times. I've typed 'flatten' in the command line and it says its unknown. Is this a command in full cad? cause we have a full 2009 version, so I'll do it on that. Can you do that command and select a whole load of lines with the blue/green selection boxes?

[RobDraw]

You can select all the lines at once and change the Z values for all of them.

 

You can use flatten in that 2009 version.

[MrTapir]

Update: I went onto the full version and used the flatten command and now its all at zero elevation, thanks for the tips.

[RobDraw]

You're welcome.