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Re: Combining Lists

  • To: mathgroup at smc.vnet.net
  • Subject: [mg16765] Re: [mg16722] Combining Lists
  • From: BobHanlon at aol.com
  • Date: Wed, 24 Mar 1999 02:24:05 -0500
  • Sender: owner-wri-mathgroup at wolfram.com

In a message dated 3/23/99 2:26:40 AM, JOHN_C_ERB at prodigy.net writes:

>I have a set of x & y data points in one list;
>
>xydata={{x1,y1},{x2,y2},{x3,y3},{x4,y4}};
>
>and a corresponding set of z data points in another list:
>
>zdata={z1,z2,z3,z4};
>
>I wish to combine them into one list of {x,y,z} data points,
>which I can do by:
>
>{temp1,temp2}=Transpose[xydata];
>xyzdata=Transpose[{temp1,temp2,zdata}]
>
>which gives the desired result:
>
>{{x1,y1,z1},{x2,y2,z2},{x3,y3,z3},{x4,y4,z4}}
>
>QUESTION:  Is there a more efficient way of doing this?
>

John,

xyzdata = Flatten /@ Transpose[{xydata, zdata}]

Bob Hanlon


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