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Grouping {x,y z} data set

• To: mathgroup at smc.vnet.net
• Subject: [mg99583] Grouping {x,y z} data set
• From: graser <graser at gmail.com>
• Date: Fri, 8 May 2009 00:18:10 -0400 (EDT)

Hi!

I have a question for you.

I have arbitrary data set.

For example,

Data={{x_1,y_1,z_1},{x_2,y_2,z_1},{x_1, y_2, z_3},........{x_n, y_m,
z_L}}

I tried to group this data set depending on z value.

I mean I try to select all x, y values with same z value.

But they are not evenly distributed and they are not integer either.

please help me!

Thanks!

• Follow-Ups:
  • Re: Grouping {x,y z} data set
    • From: Adriano Pascoletti <adriano.pascoletti@dimi.uniud.it>
  • Re: Grouping {x,y z} data set
    • From: Fred Simons <f.h.simons@tue.nl>