Re: Lists
- To: mathgroup at smc.vnet.net
- Subject: [mg4013] Re: [mg3881] Lists
- From: "Richard L. Bowman" <rbowman at bridgewater.edu>
- Date: Mon, 20 May 1996 02:12:13 -0400
- Sender: owner-wri-mathgroup at wolfram.com
On Tue, 14 May 1996, Alex Bates wrote:
> I have a two dimensional list (i.e. {{1, 23}, {2, 24}, {3, 25},
> {4, 26}}), and I want to remove all the first values in each pair of
> numbers. For instance, for the first pair, I want it to read {23}, and
> for the second, {24} instead of {2, 24}.
This is another way of doing what you want:
In[1]:= x = {{1, 23}, {2, 24}, {3, 25}, {4, 26}}
Out[1]= {{1, 23}, {2, 24}, {3, 25}, {4, 26}}
In[2]:= Transpose[{Table[x[[i,2]],{i,1,4}]}]
Out[2]= {{23}, {24}, {25}, {26}}
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Dr. Richard L. Bowman
Dept. of Physics e-mail: rbowman at bridgewater.edu
Bridgewater College phone: 540-828-5441
Bridgewater, VA 22812 FAX: 540-828-5479
"http://www.bridgewater.edu/departments/physics/physics.html";
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