nmrglue.analysis.analysisbase.ndwindow

class nmrglue.analysis.analysisbase.ndwindow(shape, wsize)

An N-dimensional iterator to slice arrays into windows.

Given the shape of an array and a window size, an ‘ndwindow’ instance iterators over tuples of slices which slice an the array into wsize sub-arrays. At each iteration, the index of the center of the sub-array is incremented by one along the last dimension. Array borders are ignored so the resulting sub-array can be smaller than wsize. If wsize contains even values the window is off center containing an additional point with lower index.

Parameters

sizetuple of ints

Size of array to generate tuples of slices from.

wsizetuple of ints

Window/sub-array size. Size of the area to select from array. This is the maximum size of the window.

See also

ndwindow_index

Iterator of a ndwindow and index of the window center

ndwindow_inside

Iterator over equal sized windows in the array.

Examples

>>> a = np.arange(12).reshape(3,4)
>>> for s in ndwindow(a.shape,(3,3)):
...     print(a[s])
[[0 1]
 [4 5]]
[[0 1 2]
 [4 5 6]]
[[1 2 3]
 [5 6 7]]
[[2 3]
 [6 7]]
[[0 1]
 [4 5]
 [8 9]]
[[ 0  1  2]
 [ 4  5  6]
 [ 8  9 10]]
[[ 1  2  3]
 [ 5  6  7]
 [ 9 10 11]]
[[ 2  3]
 [ 6  7]
 [10 11]]
[[4 5]
 [8 9]]
[[ 4  5  6]
 [ 8  9 10]]
[[ 5  6  7]
 [ 9 10 11]]
[[ 6  7]
 [10 11]]

__init__(shape, wsize)

Set up the ndwindow object

Methods

__init__(shape, wsize)	Set up the ndwindow object
next()