I have a numpy array of images. The dimension is 2 and the shape is (100,100). I want to augment more data as I have only 52 set of numpy array. I want to rotate the given array by 45 degree. What should I do for that??
Suppose the array be like
a=[[ 0 1 2 3 4] [ 5 6 7 8 9] [10 11 12 13 14] [15 16 17 18 19] [20 21 22 23 24]]
Please rotate the given array by 45 degree.
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Answer
You can use scipy.ndimage.rotate
import numpy as np from scipy.ndimage import rotate x = np.arange(25).reshape(5, -1) rotate(x, angle=45)
Output
array([[ 0, 0, 0, 0, 0, 0, 0], [ 0, 0, 0, 6, 0, 0, 0], [ 0, 0, 4, 9, 14, 0, 0], [ 0, 3, 8, 12, 16, 21, 0], [ 0, 0, 10, 15, 20, 0, 0], [ 0, 0, 0, 18, 0, 0, 0], [ 0, 0, 0, 0, 0, 0, 0]])