Displaying 3 results from an estimated 3 matches for "manipluation".
2007 Sep 14
2
Date vs date
...#39;d like to talk you all into a change, of course).
1. Since date uses 1/1/1960 as the base, and so does SAS, those of us who
contantly pass files back and forth between those two packages have a slightly
easier time.
2. as.date(10) works, as.Date(10) does not. Sometimes I have done a
manipluation that the date package does not understand, and I know that the
result is still of the right type, but the package does not. However, this is
fairly rare and I can work around it. (It mostly occurs in processing the rate
tables for expected survival).
3. temp <- as.Date('1990/1/1'...
2006 Dec 10
1
using zoo for daily stock prices
Hi all,
Please forgive this newbie posting to the list for the first time if I
haven't followed proper procedure. I have read through many of the archives
and find them most useful in learning R.
I have ten years daily data (stock closing prices) which I read in zoo
format. I am having problems coding R to run a count of how many days in
each month have a price higher than the first day
2013 Jun 19
3
how to get growth rate of a (time series) data?
Hello all, now I'm trying to switch from Excel to R to deal with the data,
and as a newbie i got the problem as follows.
suppose I have a data named "test"
test<- data.frame(year=c(1996:2011),
Y=c(74163.6,81658.5,86531.6,91125.0,98749.0,109028.0,120475.6,136613.4,160956.6,187423.5,222712.5,266599.2,315974.6,348775.1,402816.5,465731.3))
in which Y means the GDP of a country
If i