yotama9 wrote:
> Hello.
>
> I have several files of data that I want to merge into a single array
> and then manipulate it (adding a single column to all the column
> etc.)
>
> Each file is constructed of two columns. I want to take the columns of
> the first file and add to the the second column of each file.
>
> Is there a way to do so?
Personally, I would use numpy and numpy.loadtxt for this sort of thing:
sage: !cat file1
2 3
1 0
3 10
sage: !cat file2
23 29
20 21
3 -19
sage: import numpy
sage: a=numpy.loadtxt('file1')
sage: a
array([[ 2., 3.],
[ 1., 0.],
[ 3., 10.]])
sage: b=numpy.loadtxt('file2')
sage: b
array([[ 23., 29.],
[ 20., 21.],
[ 3., -19.]])
sage: a+b
array([[ 25., 32.],
[ 21., 21.],
[ 6., -9.]])
Jason
--
Jason Grout
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