similar to: zoo objects and "c"

Dear R People: I have a zoo object with its date index as a factor. > xAle1.zoo$index Error in xAle1.zoo$index : $ operator is invalid for atomic vectors > str(xAle1.zoo) Class 'zoo' atomic [1:32] 1253 1316 1038 1157 1710 1489 1159 1142 945 1245 ... ..- attr(*, "index")= Factor w/ 32 levels "04/16/09","04/17/09",..: 1 2 3 4 5 6 7 8 9 10 ... >

Dear R People: I have the following code that I use to convert a monthly zoo object to a data.frame, and it works perfectly: library(tseries) z <- get.hist.quote(instrument=inst1, start=start1,end=end1, quote=quot1,comp = "m") y <- as.ts(aggregate(z, as.yearmon, tail, 1)) y.df <- data.frame(y=y,time=time(y)) y.df$x <- ts(y.df[,1]) tsp(y.df$x) <-

Dear R People: The aggregate function works very well on regular time series. Is there a version for zoo or its that would take daily data and convert it to monthly, please? Thanks in advance, Sincerely, Erin -- Erin Hodgess Associate Professor Department of Computer and Mathematical Sciences University of Houston - Downtown mailto: erinm.hodgess at gmail.com

Dear R People: I'm trying to convert a daily zoo object to a weekly zoo object: xdate <- seq(as.Date("2002-01-01"),as.Date("2010-07-10"),by="day") library(zoo) length(xdate) xt <- zoo(rnorm(3113),order=xdate) xdat2 <- seq(index(xt)[1],index(xt)[3113],by="week") xt.w <- aggregate(xt,by=xdat2,mean) Error: length(time(x)) ==

Dear R People: I have the following data frame: > x.df date cond freq 1 04/01/09 Fever 12 2 04/02/09 Fever 11 3 04/03/09 Fever 10 4 04/04/09 Fever 13 5 04/05/09 Fever 6 6 04/01/09 Rash 6 7 04/02/09 Rash 10 8 04/03/09 Rash 9 9 04/04/09 Rash 10 10 04/05/09 Rash 8 11 04/01/09

Dear R People: Now I have a function with 3 graphics windows. I'd like for them all to be visible. However, the first window goes blank. Here is the basic setup. The first plot is the entire series. The user selects two points, which in turns generates a subset plot and an EWMA subset plot. Finally, if things worked right, the user should be able to click on "Tile Vertically"

Dear R People: Hello again! I found something unusual in the behavior of the "endpoints" function from the xts package: > x1 <- ts(1:24,start=2008,freq=12) > dat <- seq(as.Date("2008/01/01"),length=24,by="months") > library(zoo);library(xts) > x2 <- zoo(1:24,order=dat) > #Here is the surprise: > endpoints(as.xts(x1),'quarters')

Hello! What is the error message, please? At first glance, you are using the "ts" function. That doesn't work for hourly frequency. You may want to create a zoo object. This is Round One. Sincerely, Erin On Tue, Nov 7, 2017 at 1:46 AM, Emre Karag?lle <karagullemre at gmail.com> wrote: > > Hi, > I would like to ask a question about time series. > I am trying

Dear R People: I have the following data frame: > str(dog.df) 'data.frame': 7 obs. of 2 variables: $ V1: Factor w/ 3 levels "1/1/2000","1/2/2000",..: 1 1 1 2 2 3 3 $ V2: Factor w/ 3 levels "cat","dog","tree": 2 1 3 1 3 2 3 > dog.df V1 V2 1 1/1/2000 dog 2 1/1/2000 cat 3 1/1/2000 tree 4 1/2/2000 cat 5 1/2/2000 tree 6

Dear R People: I have a monthly time series which runs from January 1998 to December 2010. When I use tsp I get the following: > tsp(ibm$ts) [1] 1998.000 2010.917 12.000 Is there an easy way to convert this to a seq.Date object, please? I would like to have something to the effect of 1998/01/01 .... 2010/12/01 Thanks, Erin -- Erin Hodgess Associate Professor Department of Computer

Everything is ok on Firefox, IE, and iPad. Thanks, Erin On Tue, Jan 8, 2013 at 7:58 PM, Erin Hodgess <erinm.hodgess at gmail.com> wrote: > Dear R People: > > Has anyone used R2HTML in web files that were on the Blackboard LMS, please? > > I'm starting to do these but wanted to know if there were any > potential pitfalls. > > Thanks, > Erin > > > --

I have several data sets, which begin early in 2002 and run until yesterday. They do not have observations every day. For example: > xd1[1:10] 2002-02-25 2002-02-26 2002-02-28 2002-03-01 2002-03-04 2002-03-05 2002-03-07 7 8 1 9 12 3 5 2002-03-08 2002-03-11 2002-03-12 7 10 5 > I want to set up zoo

Thank you! On Thu, Aug 17, 2017 at 4:55 PM, Bert Gunter <bgunter.4567 at gmail.com> wrote: > r-package-devel is probably a better place to post this, especially if > you do not get a satisfactory reply here. This list is about R > programming, as you presumably know; your query is not. > > Cheers, > Bert > > > Bert Gunter > > "The trouble with having

Dear R People: So thanks to your help, I have the following: > dog3.df <- read.delim("c:/Users/erin/Documents/dog1.txt",header=FALSE,sep="\t") > dog3.df V1 V2 1 1/1/2000 dog 2 1/1/2000 cat 3 1/1/2000 tree 4 1/1/2000 dog 5 1/2/2000 cat 6 1/2/2000 cat 7 1/2/2000 cat 8 1/2/2000 tree 9 1/3/2000 dog 10 1/3/2000 tree 11 1/6/2000 dog 12 1/6/2000

>>>>> Erin Hodgess >>>>> on Fri, 1 Mar 2019 12:30:35 -0700 writes: > Yay! I re-installed everything and got through "Make > distribution"! I have one more question, please: I am > running the make check-all. I have an error at reg-1d. > It stops the process. However, the mean difference (as > per the file) is

Hi R People: What is the best way to learn how to produce vignettes, please? Any help much appreciated. Thanks, Erin -- Erin Hodgess Associate Professor Department of Computer and Mathematical Sciences University of Houston - Downtown mailto: erinm.hodgess at gmail.com

Dear R People: Is there a way to find which objects are functions via ls(), please? I'm sure that there is, but I'm not sure how. Thanks, Erin -- Erin Hodgess Associate Professor Department of Computer and Mathematical Sciences University of Houston - Downtown mailto: erinm.hodgess at gmail.com

Dear R People: Suppose I have the following: "pi/2" and I would like it to be 1.57..... Using as.numeric, here is my result: > as.numeric("pi/2") [1] NA Warning message: NAs introduced by coercion > Is there a way to produce the numeric result, please? Thanks, Erin -- Erin Hodgess Associate Professor Department of Computer and Mathematical Sciences University of

Hello I would like to build R from source and use the PGI compiler, rather than the GCC compiler. I saw the instructions for the Intel compiler in the R Installation Manual, but I didn't see the PGI. I tried a few times without instructions, but without success. Any suggestions would be most welcome. Also, I hope this is the right group for the question. Sincerely, Erin -- Erin

Dear R People: Is it possible to run R on an iPad, please? For some reason, I'm thinking that you can't have Fortran, C, etc., so you can't do it. But I thought I would check anyway. Thanks, Erin -- Erin Hodgess Associate Professor Department of Computer and Mathematical Sciences University of Houston - Downtown mailto: erinm.hodgess at gmail.com