> How many point do you have in np.unique(array) ? 43 currently
On Sun, Oct 3, 2010 at 11:55 PM, <josef.p...@gmail.com> wrote: > On Sun, Oct 3, 2010 at 8:41 AM, Gordon Wrigley <gor...@tolomea.com> wrote: > > I have an array of uint8's that has a shape of X*Y*Z*8, I would like to > > calculate modes along the 8 axis so that I end up with an array that has > the > > shape X*Y*Z and is full of modes. > > I'm having problems finding a good way of doing this. My attempts at > solving > > this using bincount or histogram produce an intermediate array that is > 32x > > the size of my input data and somewhat larger than I have the memory to > deal > > with. > > Can anyone suggest a good way to produce modes over sets of 8 bytes? > > Also in the instance where there are multiple modes for a particular set > I'm > > happy for it to pick any one arbitrarily. > > What's the range of integers? How many point do you have in > np.unique(array) ? > > bincount, for example, uses range(arr.max()+1) as set of points. > > looping over 8 values would be fast, but the intermediate arrays would > depend on the number of unique values. > I would try to use a dictionary. > > Josef > > > > G > > > > > > _______________________________________________ > > NumPy-Discussion mailing list > > NumPy-Discussion@scipy.org > > http://mail.scipy.org/mailman/listinfo/numpy-discussion > > > > > _______________________________________________ > NumPy-Discussion mailing list > NumPy-Discussion@scipy.org > http://mail.scipy.org/mailman/listinfo/numpy-discussion >
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