Thanks a lot for your answer ! I will try another way ! Anne-Sophie
David Cournapeau a écrit : > David Cournapeau wrote: >> Unless you are executing this on a gigantic computer, this won't work >> very well: you are asking to create an array which has ~ 2e5^2 elements, >> that is around 40 Gb. >> >> There is a bug, but the bug happens at the above line: the zeros call >> did not fail whereas it should have. It is likely caused because the >> number of elements cannot fit into a 32 bits integers, which means it >> overflows: >> >> import numpy as np >> n , m = 1e5,1e5 >> a = np.zeros((n, m), np.int8) >> assert a.size == n * m >> >> Will raise an assertion error (n * m is just big enough to not fit into >> a 32 bits integer in this case). >> > > I forgot to add: this is a bug in numpy, you should not get a > segmentation fault, but it would not work anyway (because you are asking > for a too big array) :) > > cheers, > > David > _______________________________________________ > Numpy-discussion mailing list > [email protected] > http://projects.scipy.org/mailman/listinfo/numpy-discussion > > -- Anne-Sophie Sertier, Doctorante monitrice UMR 5558, Laboratoire de Biométrie et Biologie Evolutive Université Lyon1, bât G. Mendel 2è étage 43 bd du 11 novembre 1918 69622 Villeurbanne cedex France Tel: 04 26 23 44 76 _______________________________________________ Numpy-discussion mailing list [email protected] http://projects.scipy.org/mailman/listinfo/numpy-discussion
