why the give code doesn't meet my requirements?
1 visualización (últimos 30 días)
Mostrar comentarios más antiguos
I want to Wrap angles to the range [-180, 180] degrees. For this I have the following code:
function wrapped_angles = wrapTo180(angles)
% Wrap angles to the range [-180, 180] degrees
wrapped_angles = mod(angles + 180, 360) - 180;
end
Likewise, I want Wrap angles to the range [-90, 90] degrees. For this I have the following code:
function wrapped_angles = wrapTo90(angles)
% Wrap angles to the range [-90, 90] degrees
wrapped_angles = mod(angles + 90, 180) - 90;
end
The 2nd function works correctly but the 1st one doesn't work correctly. Why it is so?
3 comentarios
Torsten
el 15 de Sept. de 2024
Editada: Torsten
el 15 de Sept. de 2024
The interval you transform the angle to should have length 360 degrees, shouldn't it ? So I don't understand how you could transform angles uniquely to the interval [-90 90].
For the interval [-180 180], it's ok.
angles = [-182 -185 189 184];
wrapped_angle180 = mod(angles,360) - 180
wrapped_angle90 = mod(angles,180) - 90
Respuestas (1)
dpb
el 15 de Sept. de 2024
angles = [-182 -185 189 184];
rem(angles,180)
"The concept of remainder after division is not uniquely defined, and the two functions mod and rem each compute a different variation. The mod function produces a result that is either zero or has the same sign as the divisor. The rem function produces a result that is either zero or has the same sign as the dividend."
To use MATLAB mod as you wish, you would have to write your own version of rem --
sign(angles).*mod(abs(angles),180)
8 comentarios
Torsten
el 22 de Sept. de 2024
I think the correct answer is that there is no "correct" answer.
One has to decide whether to use "rem" or "mod" or some other normalization to the respective interval.
Ver también
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!