On Tue, Feb 18, 2014 at 11:27 AM, Sebastian Berg <sebast...@sipsolutions.net
> wrote:
> On Di, 2014-02-18 at 09:05 -0700, Charles R Harris wrote:
> > Hi All,
> >
> >
> > There is an old ticket, #1499, that suggest adding a segment_axis
> > function.
> >
> > def segment_axis(a, length, overlap=0, axis=None, end='cut', endvalue=0):
> > """Generate a new array that chops the given array along the given
> axis
> > into overlapping frames.
> >
> > Parameters
> > ----------
> > a : array-like
> > The array to segment
> > length : int
> > The length of each frame
> > overlap : int, optional
> > The number of array elements by which the frames should overlap
> > axis : int, optional
> > The axis to operate on; if None, act on the flattened array
> > end : {'cut', 'wrap', 'end'}, optional
> > What to do with the last frame, if the array is not evenly
> > divisible into pieces.
> >
> > - 'cut' Simply discard the extra values
> > - 'wrap' Copy values from the beginning of the array
> > - 'pad' Pad with a constant value
> >
> > endvalue : object
> > The value to use for end='pad'
> >
> >
> > Examples
> > --------
> > >>> segment_axis(arange(10), 4, 2)
> > array([[0, 1, 2, 3],
> > [2, 3, 4, 5],
> > [4, 5, 6, 7],
> > [6, 7, 8, 9]])
> >
> >
> > Is there and interest in having this function available?
> >
>
> Just to note, there have been similar proposals with a rolling_window
> function. It could be made ND aware, too (though maybe this one is
> also).
>
For example: https://github.com/numpy/numpy/pull/31
Warren
> >
> > Chuck
> >
> > _______________________________________________
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> > NumPy-Discussion@scipy.org
> > http://mail.scipy.org/mailman/listinfo/numpy-discussion
>
>
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