Solving linear system over integers with numpy
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Published on 2012-12-16T03:01:32Z
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2012/12/16
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I'm trying to solve an overdetermined linear system of equations with numpy. Currently, I'm doing something like this (as a simple example):
a = np.array([[1,0], [0,1], [-1,1]])
b = np.array([1,1,0])
print np.linalg.lstsq(a,b)[0]
[ 1. 1.]
This works, but uses floats. Is there any way to solve the system over integers only? I've tried something along the lines of
print map(int, np.linalg.lstsq(a,b)[0])
[0, 1]
in order to convert the solution to an array of ints, expecting [1, 1], but clearly I'm missing something. Could anyone point me in the right direction?
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