On Fri, Jun 3, 2011 at 1:46 PM, Neal Becker <[email protected]> wrote:
> Can I arrange to reinterpret an array of complex of length N as an array of > float of length 2N, and vice-versa? If so, how? > You can use the view() method (if the data is contiguous): In [14]: z = array([1.0+1j, 2.0+3j, 4, 9j]) In [15]: x = z.view(float64) In [16]: x Out[16]: array([ 1., 1., 2., 3., 4., 0., 0., 9.]) But this won't work if the data in the array is not contiguous: In [17]: z2 = z[::2] In [18]: z2 Out[18]: array([ 1.+1.j, 4.+0.j]) In [19]: z2.view(float64) --------------------------------------------------------------------------- ValueError Traceback (most recent call last) /Users/warren/<ipython console> in <module>() ValueError: new type not compatible with array. (I'm using ipython with the -pylab option; 'array' and 'float64' are from numpy.) Warren > > _______________________________________________ > NumPy-Discussion mailing list > [email protected] > http://mail.scipy.org/mailman/listinfo/numpy-discussion >
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