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MathGroup Archive 2000

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Re: Is there a similar data structure to Splus' dataframe?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg23099] Re: Is there a similar data structure to Splus' dataframe?
  • From: "Atul Sharma" <atulksharma at yahoo.com>
  • Date: Sun, 16 Apr 2000 00:37:37 -0400 (EDT)
  • References: <8d95rb$ibg@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

In[1]:=?Column

"Column[data, n] gives the n-th column in data. Column[data, {n1, n2, ...}]
\
gives a list of columns n1, n2, ..."

In the package Statistics`DataManipulation` (which can be placed in Autoload
folder).

A. S.

Claudius Schnorr wrote in message <8d95rb$ibg at smc.vnet.net>...
>I would like to give columns of matrices names which I can use to
>select these columns.
>
>In Splus there is a fine syntax for that: matrix[,"name"] selects a
>column whithout having to know its position in the matrix (2nd or 3rd
>column for example).
>
>Is there a predefined data structure and commands  or a package to do
>that whithout the need to program it for myself with the Select[]
>statement?
>
>Best greetings,
>
>Claudius
>
>Please email directly to
>        schnoerr at mailzone.com
>--
>----------------------------------------------------------------
>Dr.-Ing. Claudius Schn"orr        Tel: ++49-(0)211-5591570
>Sigmaringenstr. 2
>40547 D"usseldorf / Germany       e-mail: schnoerr at mailzone.com
>----------------------------------------------------------------
>



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