Re: Apply function to parts of a list
- To: mathgroup at smc.vnet.net
- Subject: [mg86245] Re: Apply function to parts of a list
- From: dh <dh at metrohm.ch>
- Date: Fri, 7 Mar 2008 02:24:21 -0500 (EST)
- References: <fqo8pn$svq$1@smc.vnet.net>
Hi,
try e.g.:
{2,1}&/@ data
hope thsi helps, Daniel
guerom00 wrote:
> 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.
>