Apply function to parts of a list
- To: mathgroup at smc.vnet.net
- Subject: [mg86224] Apply function to parts of a list
- From: guerom00 <guerom00 at gmail.com>
- Date: Thu, 6 Mar 2008 02:59:51 -0500 (EST)
Hi all,
Very often, I find myself having datas to plot of this form :
data={{x1,y1},{x2,y2},{x3,y3}...{xn,yn}}
So, very conventional : a list of abscissa and ordinate. Now, let's say I want to multiply by 2 all my ascissa. Right now, I write :
MapAt[2*#&,data,Table[{i,1},{i,1,Length[data]}]]
It's OK but I isn't there another way to achieve this as I find this rather "involved" for such a simple thing ?
Thanks in advance.
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