import numpy as np
samples = np.arange(-10, 10, 0.2)
print('sample: ', samples)
xs, ys = np.meshgrid(samples, samples)
print('xs: ', xs)
print('ys: ', ys)
sample: [ -1.00000000e+01 -9.80000000e+00 -9.60000000e+00 -9.40000000e+00
-9.20000000e+00 -9.00000000e+00 -8.80000000e+00 -8.60000000e+00
-8.40000000e+00 -8.20000000e+00 -8.00000000e+00 -7.80000000e+00
-7.60000000e+00 -7.40000000e+00 -7.20000000e+00 -7.00000000e+00
-6.80000000e+00 -6.60000000e+00 -6.40000000e+00 -6.20000000e+00
-6.00000000e+00 -5.80000000e+00 -5.60000000e+00 -5.40000000e+00
-5.20000000e+00 -5.00000000e+00 -4.80000000e+00 -4.60000000e+00
-4.40000000e+00 -4.20000000e+00 -4.00000000e+00 -3.80000000e+00
-3.60000000e+00 -3.40000000e+00 -3.20000000e+00 -3.00000000e+00
-2.80000000e+00 -2.60000000e+00 -2.40000000e+00 -2.20000000e+00
-2.00000000e+00 -1.80000000e+00 -1.60000000e+00 -1.40000000e+00
-1.20000000e+00 -1.00000000e+00 -8.00000000e-01 -6.00000000e-01
-4.00000000e-01 -2.00000000e-01 -3.55271368e-14 2.00000000e-01
4.00000000e-01 6.00000000e-01 8.00000000e-01 1.00000000e+00
1.20000000e+00 1.40000000e+00 1.60000000e+00 1.80000000e+00
2.00000000e+00 2.20000000e+00 2.40000000e+00 2.60000000e+00
2.80000000e+00 3.00000000e+00 3.20000000e+00 3.40000000e+00
3.60000000e+00 3.80000000e+00 4.00000000e+00 4.20000000e+00
4.40000000e+00 4.60000000e+00 4.80000000e+00 5.00000000e+00
5.20000000e+00 5.40000000e+00 5.60000000e+00 5.80000000e+00
6.00000000e+00 6.20000000e+00 6.40000000e+00 6.60000000e+00
6.80000000e+00 7.00000000e+00 7.20000000e+00 7.40000000e+00
7.60000000e+00 7.80000000e+00 8.00000000e+00 8.20000000e+00
8.40000000e+00 8.60000000e+00 8.80000000e+00 9.00000000e+00
9.20000000e+00 9.40000000e+00 9.60000000e+00 9.80000000e+00]
xs: [[-10. -9.8 -9.6 ..., 9.4 9.6 9.8]
[-10. -9.8 -9.6 ..., 9.4 9.6 9.8]
[-10. -9.8 -9.6 ..., 9.4 9.6 9.8]
...,
[-10. -9.8 -9.6 ..., 9.4 9.6 9.8]
[-10. -9.8 -9.6 ..., 9.4 9.6 9.8]
[-10. -9.8 -9.6 ..., 9.4 9.6 9.8]]
ys: [[-10. -10. -10. ..., -10. -10. -10. ]
[ -9.8 -9.8 -9.8 ..., -9.8 -9.8 -9.8]
[ -9.6 -9.6 -9.6 ..., -9.6 -9.6 -9.6]
...,
[ 9.4 9.4 9.4 ..., 9.4 9.4 9.4]
[ 9.6 9.6 9.6 ..., 9.6 9.6 9.6]
[ 9.8 9.8 9.8 ..., 9.8 9.8 9.8]]
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