Where can I find documentation for data[:,9]

[Cal Who]

data = readdata( 'data/input.dat', delimiter = ',' )

input = data[:, :9]#nine data columns

Where can I find documentation for the

data[:,9]

in the code above.

Been looking and found many examples but would like to know the definition.

I need to skip the first column and then read 9

I would also like to print the data in ihe variable "input"

Thanks

[Robert Kern]

On 2010-03-11 13:01 PM, Cal Who wrote:
> data = readdata( 'data/input.dat', delimiter = ',' )
>
> input = data[:, :9]#nine data columns
>
>
>
> Where can I find documentation for the
>
> data[:,9]
>
> in the code above.
>
> Been looking and found many examples but would like to know the definition.

When asking questions like this, it helps *a lot* to provide a complete example,
not just a snippet. If I weren't already intimately familiar with the library
you are using, I would have no idea how to help you.

However, I do know that input object is a numpy array, and the syntax you are
asking about is multidimensional slicing.

http://docs.scipy.org/doc/numpy/reference/arrays.indexing.html

> I need to skip the first column and then read 9

data[:, 1:10]

> I would also like to print the data in ihe variable "input"

print input

--
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
that is made terrible by our own mad attempt to interpret it as though it had
an underlying truth."
-- Umberto Eco

[Cal Who]

"Robert Kern" <rober...@gmail.com> wrote in message
news:mailman.631.12683353...@python.org...

Thanks, that helped a lot.

I'm having trouble knowing what to search for to find documenatation. For
example, is print a Python command, a numpy command or a java command?

I like to read the documentation even if the command is working for me.

Thanks again

[Martin P. Hellwig]

On 03/11/10 22:08, Cal Who wrote:
<cut>

> Thanks, that helped a lot.
>
> I'm having trouble knowing what to search for to find documenatation. For
> example, is print a Python command, a numpy command or a java command?
>
> I like to read the documentation even if the command is working for me.
>
>
> Thanks again
>
>

Probably for you the right way would be to familiarize yourself with the
namespace concept of Python, this makes it easier to identify whether
something is built-in, a standard module or an external module.
Which makes it much easier to feed google the right clues.

--
mph

[Cal Who]

"Martin P. Hellwig" <martin....@dcuktec.org> wrote in message
news:hnbq8q$vgm$1...@news.eternal-september.org...

Thanks a lot, I'll look that up now.