[R] about the trend comparison by R

[John Sorkin]

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John
John Sorkin
Chief Biostatistics and Informatics
Univ. of Maryland School of Medicine
Division of Gerontology and Geriatric Medicine
JSorkin at grecc.umaryland.edu 
-----Original Message-----
From: 孟欣<lm_mengxin at 163.com>
To: R1 <r-help at r-project.org>
To: R0 <r-help-request at r-project.org>

Sent: 8/1/2010 10:37:20 PM
Subject: [R] about the trend comparison by R

Hi all:
I've 2 groups of data,which are measured at:
1990,1991,1992,...2000.
 
I wanna know whether the trend of 2 groups are same or not.
 
Maybe time series analysis is suitable,but I don't know which index is
fit for my purpose,and how to get the index from function of time series
analysis under R environment.

Thanks a lot.
My best
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