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This commit is contained in:
Steven Silvester
2015-06-07 06:30:12 -05:00
parent eb8c2d2853
commit 38c7c26460
1 changed files with 7 additions and 5 deletions
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skimage/util/shape.py
+7 -5
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@@ -116,7 +116,7 @@ def view_as_windows(arr_in, window_shape, step=1):
window_shape : integer or tuple of length arr_in.ndim
Defines the shape of the elementary n-dimensional orthotope
(better know as hyperrectangle [1]_) of the rolling window view.
If an integer is given, the shape will be a hyperrectangle of
If an integer is given, the shape will be a hypercube of
sidelength given by its value.
step : integer or tuple of length arr_in.ndim
Indicates step size at which extraction shall be performed.
@@ -218,16 +218,18 @@ def view_as_windows(arr_in, window_shape, step=1):
if not isinstance(arr_in, np.ndarray):
raise TypeError("`arr_in` must be a numpy ndarray")
ndim = arr_in.ndim
if isinstance(window_shape, numbers.Number):
window_shape = tuple([window_shape] * arr_in.ndim)
if not (len(window_shape) == arr_in.ndim):
window_shape = (window_shape,) * ndim
if not (len(window_shape) == ndim):
raise ValueError("`window_shape` is incompatible with `arr_in.shape`")
if isinstance(step, numbers.Number):
if step < 1:
raise ValueError("`step` must be >= 1")
step = tuple([step] * arr_in.ndim)
if not (len(step) == arr_in.ndim):
step = (step,) * ndim
if len(step) != ndim:
raise ValueError("`step` is incompatible with `arr_in.shape`")
arr_shape = np.array(arr_in.shape)