[R] restructuring matrix

From: yoooooo <magno_yu_at_ml.com>
Date: Wed, 27 Jun 2007 17:16:39 -0700 (PDT)

Hi all,

    let's say I have matrix

People Desc Value

Mary      Height    50
Mary      Weight   100
Fanny    Height     60
Fanny     Height    200

Is there a quick way to form the following matrix?

People Height Weight

Mary      50         100
Fanny     60        200

(Assuming I don't know the length of people/desc and let's say these are characters matrix.. I tried play with row(), col(), etc.. but I don't seem to find like a duplicate match function... I'm trying to write some one/two liner that convert my resulting matrix to vector and pick the appropriate fields.. etc )

Thanks!

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