Feb. 17, 2005
2:28 p.m.
Fernando Perez wrote:
Robert Kern wrote:
Why not just do
b = ravel(a)
?
That should work in both cases just fine.
Because I thouhgt that ravel would make a copy regardless. But I may be wrong, much of this is very old code, when I was just picking up Numeric. At the time, I felt it might be best to avoid the unnecessary copies if possible.
Nope. In [1]: a = arange(8) In [2]: a.shape = (2,4) In [3]: a Out[3]: NumPy array, format: long [[0 1 2 3] [4 5 6 7]] In [4]: ravel(a)[3] = 10 In [5]: a Out[5]: NumPy array, format: long [[ 0 1 2 10] [ 4 5 6 7]] -- Robert Kern rkern@ucsd.edu "In the fields of hell where the grass grows high Are the graves of dreams allowed to die." -- Richard Harter