Code Editor (JavaScript)
// Two kernels, they do not need to have the same dimensions.
var kernelA = ee.Kernel.chebyshev({radius: 3});
var kernelB = ee.Kernel.square({radius: 1, normalize: false, magnitude: 100});
print(kernelA, kernelB);
/**
* Two kernel weights matrices
*
* [3, 3, 3, 3, 3, 3, 3]
* [3, 2, 2, 2, 2, 2, 3]
* [3, 2, 1, 1, 1, 2, 3] [100, 100, 100]
* A [3, 2, 1, 0, 1, 2, 3] B [100, 100, 100]
* [3, 2, 1, 1, 1, 2, 3] [100, 100, 100]
* [3, 2, 2, 2, 2, 2, 3]
* [3, 3, 3, 3, 3, 3, 3]
*/
print('Pointwise addition of two kernels', kernelA.add(kernelB));
/**
* [3, 3, 3, 3, 3, 3, 3]
* [3, 2, 2, 2, 2, 2, 3]
* [3, 2, 101, 101, 101, 2, 3]
* [3, 2, 101, 100, 101, 2, 3]
* [3, 2, 101, 101, 101, 2, 3]
* [3, 2, 2, 2, 2, 2, 3]
* [3, 3, 3, 3, 3, 3, 3]
*/
Python setup
See the
Python Environment page for information on the Python API and using
geemap for interactive development.
import ee
import geemap.core as geemap
Colab (Python)
from pprint import pprint
# Two kernels, they do not need to have the same dimensions.
kernel_a = ee.Kernel.chebyshev(**{'radius': ee.Number(3)})
kernel_b = ee.Kernel.square(**{
'radius': 1,
'normalize': False,
'magnitude': 100
})
pprint(kernel_a.getInfo())
pprint(kernel_b.getInfo())
# Two kernel weights matrices
# [3, 3, 3, 3, 3, 3, 3]
# [3, 2, 2, 2, 2, 2, 3]
# [3, 2, 1, 1, 1, 2, 3] [100, 100, 100]
# A [3, 2, 1, 0, 1, 2, 3] B [100, 100, 100]
# [3, 2, 1, 1, 1, 2, 3] [100, 100, 100]
# [3, 2, 2, 2, 2, 2, 3]
# [3, 3, 3, 3, 3, 3, 3]
print('Pointwise addition of two kernels:')
pprint(kernel_a.add(kernel_b).getInfo())
# [3, 3, 3, 3, 3, 3, 3]
# [3, 2, 2, 2, 2, 2, 3]
# [3, 2, 101, 101, 101, 2, 3]
# [3, 2, 101, 100, 101, 2, 3]
# [3, 2, 101, 101, 101, 2, 3]
# [3, 2, 2, 2, 2, 2, 3]
# [3, 3, 3, 3, 3, 3, 3]