Re: Data Extraction from List {{x1,y1}..{xn,yn}}where ##<x<##
- To: mathgroup@smc.vnet.net
- Subject: [mg11719] Re: [mg11694] Data Extraction from List {{x1,y1}..{xn,yn}}where ##<x<##
- From: Wouter Meeussen <eu000949@pophost.eunet.be>
- Date: Thu, 26 Mar 1998 03:08:47 -0500
At 18:35 21-03-98 -0500, charles wrote:
>Hello,
>
>How might I extract a range of {x,y}from a list of data, so that I can
>perform a linear fit between the point that meet the criterion of being
>bewteen x_n and x_m.
>
>In other words, fit a line to a part of the data that has #1<x<#2.
>
>I have attempted to use the Select function but it requires me to
>Flatten the data list first? And it results in giving me a list of just
>the x values not the {x,y} pairs.
>
>Any help is greatly appreciated.
>
>Thanks,
>
>Charles Koehler
>
>
>
hi Charles,
try:
data=Table[{Random[],Random[]},{12}]
Select[data,(#[[1]]>.2&&#[[1]]<.5)&]
Dr. Wouter L. J. MEEUSSEN
w.meeussen.vdmcc@vandemoortele.be
eu000949@pophost.eunet.be