Message-ID: <1359122033.14249.YahooMailNeo@web142603.mail.bf1.yahoo.com>
Date: 2013-01-25T13:53:53Z
From: arun
Subject: Help with adding 'dates' string as rownames to matrix
In-Reply-To: <1359109338925-4656611.post@n4.nabble.com>
Hi,
Try this:
Dates1<-c("2005-04-01 BST","2005-04-04 BST","2005-04-05 BST")
Dates2<-as.Date(gsub("\\s+\\w+$","",Dates1))
?mat1<-matrix(1:9,nrow=3)
library(zoo)
?z1<-zoo(mat1,Dates2)
?z1
#???????????????
#2005-04-01 1 4 7
#2005-04-04 2 5 8
#2005-04-05 3 6 9
#if you use:
? mat2<-matrix(1:9,nrow=3)
?row.names(mat2)<- Dates2
?mat2
#????? [,1] [,2] [,3]
#12874??? 1??? 4??? 7
#12877??? 2??? 5??? 8
#12878??? 3??? 6??? 9
A.K.
----- Original Message -----
From: kevj1980 <kevin.kidney at cameronhume.com>
To: r-help at r-project.org
Cc:
Sent: Friday, January 25, 2013 5:22 AM
Subject: [R] Help with adding 'dates' string as rownames to matrix
Hi, I need help with two related issues:
1. I wish to drop repeating text "BST" from the below 'dates' string:
[1] "2005-04-01 BST" "2005-04-04 BST" "2005-04-05 BST" "2005-04-06 BST"
"2005-04-07 BST" "2005-04-08 BST" "2005-04-11 BST" "2005-04-12 BST"
"2005-04-13 BST" "2005-04-14 BST" "
2. I then wish to add this (cleaned-up) 'dates' string as the row names to a
matrix (same length as 'dates' string)
Any expertise greatly appreciated,
kevj
--
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