[Numpy-discussion] printing array in tabular form
Derek Homeier
derek at astro.physik.uni-goettingen.de
Fri May 10 09:36:38 EDT 2013
On 10.05.2013, at 2:51PM, Daniele Nicolodi <daniele at grinta.net> wrote:
> If you wish to format numpy arrays preceding them with a variable name,
> the following is a possible solution that gives the same formatting as
> in your example:
>
> import numpy as np
> import sys
>
> def format(out, v, name):
> header = "{} = ".format(name)
> out.write(header)
> np.savetxt(out, v, fmt="%d", delimiter=", ",
> newline="\n" + " " * len(header))
> out.write("\n")
>
> IL = np.array([range(5), ] * 5)
> format(sys.stdout, IL, "IL")
That is a quite ingenuous way to use savetxt functionality to write that extra column!
Only two comments:
Don't call that function "format", as it would mask the 'format' builtin!
In the present version it will only work with a file handle; to print it a to file you would need
to pass it as fformat(open(fname, 'a'), … or check for that case inside the function.
Cheers,
Derek
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