Concatenating arrays in python like matlab without knowing the size of the output array

Question

I am trying to combine arrays in python similar to matlab

array1= zeros(3,500); array2=ones(3,700); array=[array1, array2]; 

In python, I did the following:

 array1=np.zeros((3,500)) array2=np.ones((3,700)) array=numpy.concatenate((array1, array2), axis=2) 

however this gives me different results when I get access to "array [0 ,:]" is there any way in python to put arrays in one array, similar to matlab.

thanks

Answer 1

concatenate((a,b),1) or hstack((a,b)) or column_stack((a,b)) or c_[a,b]

From here: http://wiki.scipy.org/NumPy_for_Matlab_Users