Hello, I want to calculate the root of a numpy array with negative numbers. Here is an example:
x = linspace(-10,10,100) h = zeros(100) h[where(abs(x) < 2)] = sqrt( abs(x) -2 ) h[where(2 <= abs(x))] = 1j * sqrt( 2 - abs(x) ) Unfortunately I get the following error: Warning: invalid value encountered in sqrt and h contains some NaN-values How can I make a correct case differentiation in combination with roots that might contain negative values? Thank you very much, Matthias _______________________________________________ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
