-
numpy.place(arr, mask, vals)
[source] -
Change elements of an array based on conditional and input values.
Similar to
np.copyto(arr, vals, where=mask)
, the difference is thatplace
uses the first N elements ofvals
, where N is the number of True values inmask
, whilecopyto
uses the elements wheremask
is True.Note that
extract
does the exact opposite ofplace
.Parameters: arr : ndarray
Array to put data into.
mask : array_like
Boolean mask array. Must have the same size as
a
.vals : 1-D sequence
Values to put into
a
. Only the first N elements are used, where N is the number of True values inmask
. Ifvals
is smaller than N it will be repeated.Examples
>>> arr = np.arange(6).reshape(2, 3) >>> np.place(arr, arr>2, [44, 55]) >>> arr array([[ 0, 1, 2], [44, 55, 44]])
numpy.place()
2017-01-10 18:16:28
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