Hi,
Using the example data,
library(zoo)
z1 <- read.zoo("dfRaw_20140509.csv",sep="",index.column=2,format="%Y%m%d")
z1
#?????????? P_num??? P_ID Totalvalue
#2013-05-10 25193 1230238????? 1.203
#2013-05-24 25190 1230238????? 1.201
#2013-07-05 25191 1230238????? 1.208
#2013-08-02 25194 1230238????? 1.195
#2013-09-06 25192 1230238????? 1.209
#2013-09-20?? 915 1230238????? 1.124
#2013-10-25 17980 1230238????? 1.276
#2013-11-08 23316 1230238????? 1.431
#2013-11-29? 3817 1230238????? 2.082
#2014-01-10 17901 1230238????? 1.053
#2014-01-24 23315 1230238????? 1.106
#2014-02-14 32554 1230238????? 1.493
#2014-03-14 23311 1230238????? 1.072
#2014-03-14 25885 1230238????? 1.000
#2014-03-21 32550 1230238????? 1.383
#2014-05-09 32551 1230238????? 1.309
time(z1)[8] <- "2013-10-28"
format(time(z1), "%w")
?#[1] "5" "5" "5" "5" "5" "5" "5" "1" "5" "5" "5" "5" "5" "5" "5" "5"
?z1[format(time(z1), "%w") %in% 5,]
A.K.
The data loks like this
? ? ? ? P_num???? ? Date???? ?P_ID ? ? ?Totalvalue
1????00915????20130920????1230238????1.124
2????17901????20140110????1230238????1.053
3????17980????20131025????1230238????1.276
4????23311????20140314????1230238????1.072
5????23315????20140124????1230238????1.106
6????23316????20131108????1230238????1.431
7????25190????20130524????1230238????1.201
8????25191????20130705????1230238????1.208
9????25192????20130906????1230238????1.209
10????25193????20130510????1230238????1.203
11????25194????20130802????1230238????1.195
12????25885????20140314????1230238????1
13????32550????20140321????1230238????1.383
14????32551????20140509????1230238????1.309
15????32554????20140214????1230238????1.493
16????3817????20131129????1230238????2.082
I have used the ZOO package but still I am getting an error. Can you please help.
library(zoo)
z <- read.zoo("dfRaw_20140509.csv", header = TRUE, sep =
",",format = "%d-%b-%y",colClasses = c("numeric", "numeric",
"character", "character", "numeric", "numeric"))
z[format(time(z), "%w") %in% 2,]
Error in `[.data.frame`(rval, , j) : undefined columns selected