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I'm working in a road signs project. I need the signs layer symbol to rotate according to the value in the angle field, so they could be represented facing the correct orientation. However, the angle field values refer to a CAD file originally designs with drawing units configuration where the angle value rotates counter clockwise, from East (Direction 0).

Example: A sign with rotation angle value of 90º will be facing north in a clockwise rotation, or will be facing south in a counter clockwise. (East as 0º)

I have altered the CAD file drawing units configuration to rotate clockwise and the angle value has changed on the CAD blocks. But when converted back to shape they still return the original counter clockwise rotation angle value.

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closed as too localized by iant, whuber Jan 9 '13 at 13:53

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can you just multiply the angle by -1 to reverse the direction? – iant Jan 2 '13 at 8:35
I'm sorry, but I have no idea how to do that... Could you be more specific please? Thanks – Pedro Pontes Almeida Jan 3 '13 at 17:38
Thank's for the advise. It worked perfectly. – Pedro Pontes Almeida Jan 8 '13 at 17:43