23.05.2012 11:22, shbr kirjoitti:
> I am running the following script as a basic input-output model but the
> inverse function is bringing back an incorrect result (I have checked this
> by inputting the data manually).I am very new to python but I assume the
> error occurs in how the data is gathered from the csv but I don’t know how
> to fix this. Any advice would be much appreciated.
From your explanation it is unfortunately not clear what actually does
not work, and what you would expect as results. Can you clarify?
The inverse certainly gives the correct result:
>>> conMatrix = numpy.matrix('0.4102 0.0301 0.0257; 0.0624 0.3783 0.1050;
>>> 0.1236 0.1588 0.1919')
>>> eyesee = numpy.eye(3) - conMatrix
>>> eyesee.I
matrix([[ 1.72033888, 0.10060528, 0.06778402],
[ 0.22456355, 1.67684212, 0.22502129],
[ 0.30725724, 0.34490452, 1.29205728]])
>>> eyesee.I * eyesee
matrix([[ 1.00000000e+00, -3.46944695e-18, 0.00000000e+00],
[ 2.42861287e-17, 1.00000000e+00, 0.00000000e+00],
[ 2.77555756e-17, 0.00000000e+00, 1.00000000e+00]])
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