extracting a list to a list, help please
- To: mathgroup at smc.vnet.net
- Subject: [mg46155] extracting a list to a list, help please
- From: Serge <nospam at nospam.com>
- Date: Mon, 9 Feb 2004 05:54:04 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
Hello, I am a beginner in Mathematica and I have a rather simple question. I made some calculations that I need for an orbit and I have a list that look like this: mylist1 = {{a1,b1,c1,d1},{a2,b2,c2,d2},{a3,b3,c3,d3},etc} All I want to do is to make a list of the form mylist2 = {{a1,b1},{a2,b2},{a3,b3},etc} from the original list (mylist1), so that I can ListPlot those pairs of points (they represent x and y coordinates for some orbit). I am having trouble figuring out how to do this. I tried using the Table command but I couldn't get it into the above form. I would greatly appreciate if someone can help me out. Thanks so much. Best, Serge
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