Hi there.

I am aware of how to convert from Polar to Cartesian. However, the issue I am having is that for my intended application, the angles are offset and inverted to the usual Polar configuration. So 0 degrees begins at the top and runs clockwise around until it reaches 360/0degrees again...

Would anyone have an idea of a formula which would enable me to calculate the XY coordinates using this circle?

I see that with polar coordinates, usually 0degrees begins to the right (where 90 degees is located in the above image). And there seems to be two systems, one rotates to 360/degrees anticlockwise and the other goes positive negative either side of 0 degrees. I find this a little confusing.

Any help would be much appreciated!

Many thanks!

Martin