rotate90

sofia_redux.toolkit.image.adjust.rotate90(image, direction)

Replicates IDL rotate function

In the table below, (X0, Y0) indicates the original subscripts, and (X1, Y1) are the subscripts of the resulting array. The notation Y0 indicates a reversal of the Y axis, Y1 = Ny - Y0 - 1.

Direction	Transpose?	AntiClockwise	X1	Y1
0	N	0	X0	Y0
1	N	90	-Y0	X0
2	N	180	-X0	-Y0
3	N	270	Y0	-X0
4	Y	0	Y0	X0
5	Y	90	-X0	Y0
6	Y	180	-Y0	-X0
7	Y	270	X0	-Y0

Parameters:

imagearray_like

(N, M) 2 dimensional array to rotate.

directionint

See above for rotate value effect. Direction is taken as modulo 8.

Returns:

numpy.ndarray