Hello,I have a dwg file with a contour made from coordinates, but the x and y values are flipped so everything is mirrored. Is there any way of changing all of the elements in the drawing to correct this? thanks!

Hello Encomium, maybe you could do a mirror in clicking 2 points of a line 1st point 0,0 and 2nd point 100,100.
Is only the contour NOT OK or all the drawing ?
I've had this kind of problem with some X,Y coordinates given by an asian civil engineer and it's after 2 tests that I realised that he was using a "rule of the left hand" instead of the traditionnal "rule of the right hand".philippe JOSEPH2014-09-19 15:45:40

You can use the [CMD]MIRROR[/CMD] command to put all objects "back to normal".

Specifically, if you want the X coordinate of every position to become the Y coordinate, and vice versa, Mirror everything with 0,0,0 as the base and anything along a 45-degree line from there as the other mirror axis point [e.g. 1,1,0].