Calculate angle between two coordinates? Python-CodePudding

Say you have two coordinates within a range of 0.0 till 1.0. A: (0.12, 0.75) B: (0.43, 0.97) And you want to walk from point A to point B. How would you calculate the angle in python.Where north is 0 and south is 180.

CodePudding user response：

if you want to get it from North then here you go:

def get_angle(x1,y1,x2,y2):
    return math.degrees(math.atan2((x2-x1),(y2-y1)))

This works because

tan(x) = Opposite/Adjacent;
Opposite/Adjacent = x2-x1/y2-y1;
x=atan((x2-x1)/(y2-y1))

atan2 is the inverse of tan btw.

EDIT: use atan2 not atan since atan2 returns -180 to 180 instead of atan's -90 to 90.

CodePudding user response：

I would calculate the diference in x and the diference in y and use the function math.atan(y/x) from the math module. Then it's just a matter of converting from radians to degrees and add 90º.