Re: How to subtract two sets of data for a ListPlot
- To: mathgroup at smc.vnet.net
- Subject: [mg76704] Re: [mg76672] How to subtract two sets of data for a ListPlot
- From: Andrzej Kozlowski <akoz at mimuw.edu.pl>
- Date: Sat, 26 May 2007 04:28:13 -0400 (EDT)
- References: <200705251045.GAA08313@smc.vnet.net>
On 25 May 2007, at 19:45, chuck009 wrote: > Hi all. Suppose I've calculated two sets of lists of the form for > example: > > list1={{1,1},{2,2},{3,3}}; > > list2={{1,1},{2,4},{3,9}}; > > What's an efficient way to create a third list with the same x- > values but with the y-values subtracted > > newlist={{1,0},{2,-2},{3,-6}}; > > I realize I can manually subtract them in a For-loop, but I'm sure > a one-line command using Map or some other construct can be used as > well but can't figure it out. > > Thanks! > MapThread[{#1[[1]], #1[[2]] - #2[[2]]} &,{list1, list2}] {{1, 0}, {2, -2}, {3, -6}} or Transpose[{list1[[All, 1]], list1[[All, 2]] - list2[[All, 2]]}] {{1, 0}, {2, -2}, {3, -6}} Andrzej Kozlowski
- References:
- How to subtract two sets of data for a ListPlot
- From: chuck009 <dmilioto@comcast.com>
- How to subtract two sets of data for a ListPlot