problem in using linalg solver in numpy

[Peter Otten]

Pramod wrote:

> When run the below  program in python i got error like this ,
> 
> 
> Matrix
> [[ 8 -6  2]
>  [-4 11 -7]
>  [ 4 -7  6]]
> row vecotr X
> [[ 28 -40  33]]
> Traceback (most recent call last):
>   File "solve.py", line 16, in <module>
>     print A*B
>   File "/usr/lib/python2.6/dist-packages/numpy/core/defmatrix.py",
> line 290, in __mul__
>     return N.dot(self, asmatrix(other))
> ValueError: objects are not aligned

> A=matrix([[int(fr.readline()) for j in range(N)]for i in range(N)])
> B=matrix([[int(fr.readline())for j in range(N)]])

> print A*B

Row or column; I can't remember which is which either. Try again with

B = matrix([[int(fr.readline())] for j in range(N)]

or

A*B.transpose()

Peter