Hi list,
I am trying to calculate the change of angles I do get from a sensor as degrees between -180° and 180 by subtracting subsequent values.
As the jump from -180 to 180 would cause a jump here, I am wondering what the best way to deal with these angles would be. I am hesitating to convert the angles to angular functions such as sine, cosine, as with them the rate of change (steepness) is not equal over all values.
Most looking forward to hear all suggestions!
thanks, Peter
On 01/12/2015 07:54 AM, Peter P. wrote:
Hi list,
I am trying to calculate the change of angles I do get from a sensor as degrees between -180° and 180 by subtracting subsequent values.
As the jump from -180 to 180 would cause a jump here,
why? -180 and +180 are equivalent. the only problem you might have is, if you interpolating between say -179 and +179 (which might go through 0 rather than 180)
what i usually do in such cases is to check whether the difference is
180° and if so, apply wrapping, so that i always interpolate on the
shortest path.
see attached abstraction
gfdsar IOhannes
-
IOhannes m zmölnig -
Peter P.