similar to: Memory allocation problem

I have a time series of rainfall in a dataframe. I would like to be able to aggregate this using a sliding window approach- i.e. a new 24 hourly total is calculated for each hours rainfall. I'm struggling to understand how this might be achieved - currently I've tried looping a sum function to re-calculate a new total at every stage of the loop. for (inp[[9]] in

Dear all, I have a problem with a loop, if anyone has any knowledge on these things I would appreciate some comments. The code below is designed to allow me to extract the top record of the data frame, and them remove rows from the data frame which have an index close to the extracted top record. topstorm<-subset(rankeddataset[1,]) ## Extracts the top storm

Hi all, I'm hoping there's a quick fix for this. I have two data frames and am running a loop to match similar rows. However the matching is not working well, and I suspect it is because of the different formats of columns. For example, in col. 1 of dataframe 1 the nummbers are formatted as 1,2,3,4,5,6,7,8,9...31 However in col. 1 dataframe 2 the numbers are

Hi Folks! I'm reading in some data from a .csv file that has a date column. How do I use colClasses to get read.csv to recognize the date column? The documentation on this seems to be nil - And yes, I've read help and R Data Import/Export and can't figure out what the colClasses syntax is. Thanks, john [[alternative HTML version deleted]]

All: How do I obtain one step ahead out-of-sample forecasts from a model using "dyn" or "dynlm" ? Thanks! Best, John [[alternative HTML version deleted]]

Hi Folks, Here is my attempt at a simple polar plot. > pos <- seq(0,360,by=5) > tspk <- rep(c(1,0,1),c(13,47,13)) > require(plotrix) > polar.plot(tspk,pos,rp.type="s",point.symbols=17,point.col="green4") I only see half the symbols, the other half of each symbol is hidden under the circular grid. In fact if I change rp.type="r", I see the

Hi Folks! I'm struggling with dates - but enough about my personal life..... I have two daily time series files. In one (x) the date format is Y/m/d and the other (y) is d/m/y. I used read.zoo on both and they read into R with no problem. Then I use: weekdays(as.Date(x$DATE)) and get what I expect - all the days of the week in my data set. When I use:

Dear all, I am having some problems with the folowing task and would appreciate any thoughts on the matter. I have a sliding window time series of rainfall. This is 24 hour window created from an hourly record. Every hour, a new twenty four hour total is calculated. I would like to extract the Top 50 twenty four hour totals however I have a problem. Simply ranking the sliding window time

Maybe this is a silly question, but i have a few million files i need to delete but i can't just reformat the volume. Right now the fastest thing i can think of is nice -20 rm -Rf /folder-i-want-to-delete is there a better or faster way to do this? Thanks, Jamie

Hi folks! How do I extract lags from a formula? An example: mod.eq<-formula(x~lag(x,-1)+lag(x,-2)) > mod.eq x ~ lag(x, -1) + lag(x, -2) > mod.eq[1] "~"() > mod.eq[2] x() > mod.eq[3] lag(x, -1) + lag(x, -2)() I'm trying to extract the lags into a vector that would be simply [1,2]. How do I do this? I'm using the dyn package to do dynamic

Hi Folks! I used the code below previously with no problems, but now I get: DTB3<-read.table("C:\\Program Files\\R\\R-2.7.1\\DTB3.csv",header=TRUE,sep=",") > tail(DTB3) DATE VALUE 14233 2008-07-23 1.56 14234 2008-07-24 1.62 14235 2008-07-25 1.71 14236 2008-07-28 1.70 14237 2008-07-29 1.69 14238 2008-07-30 1.67 >

Hi folks! Does anyone know why I might see something like this after running system.time? system.time(svd(Mean_svd_data)) user system elapsed 0 0 0 The data set is tiny and the function returns results instantly, but shouldn't it still give me a time? Thanks, John [[alternative HTML version deleted]]

Hi, I'm trying to melt() some data for subsequent cast()ing and am encoutering errors. The overall process requires a couple of casts()s and melt()s. ########Start Session 1########## ## I have the data in a (fully) melted format and can cast it fine... > norm1[1:10,] Pool SNP Sample.Name variable value 1 1 rs1045485 CA0092 Height.1 0.003488853 2 1 rs1045485

Hi, I just updated to R-2.1.1 and updated packages acordingly However, after the update, routines that use polar.plot did not function as correctly. In plotrix 1.3.3 the polar.plot function does scale label.pos to radians prior to calling radial.plot Hence, the command polar.plot(c(5,10,5,0),c(-10,0,10,20),rp.type='P',

Dear all, I have some problems with importing data from an Access data base via RODBC to R. The data base contains several tables, which all are imported consecutively. One table has a column with column name "NO". If I run the code attached on the bottom of the mail I get no complain, but the column name (name of the respective vector of the data.frame) is "Expr1014" instead

Thanks. So after searching 4 hours last night it looks like that there is no R package that can do this right now. Any other ideas or suggestions might be helpful.RegardsAlex On Wednesday, June 21, 2017 3:21 PM, Alaios via R-help <r-help at r-project.org> wrote: Thanks Duncan for the replyI can not suppress anything these are radiation pattern measurements that are typically are

Hi, Two questions: 1 - Say I have average speed and directions for tide and I would like to plot them on a polar plot, but with different colors so I can indicate the two directions. I'm using polar.plot from the plotrix library. How can I add a second "b" and "dir.b" series to a polar.plot? library(plotrix) a = 3 dir.a = 85 b = 4 dir.b = 250 polar.plot(a, dir.a, start =

Thanks Duncan for the replyI can not suppress anything these are radiation pattern measurements that are typically are taken at X,Y and Z planes. See an example here, where I want to plot the measurements for the red, green and blue planes (so the image below withouth the 3d green structure inside)https://www.researchgate.net/publication/258391165/figure/fig7/AS:322947316240401 at

Hi folks. This set of code used to work, but after upgrading to the latest version of Rmetrics it no longer does. Any ideas? SP500<-read.table("SP500.csv",header=TRUE,sep=",") > head(SP500) Date Open High Low Close Volume Close2 1 8/4/2006 1280.26 1292.92 1273.82 1279.40 2530970112 1279.40 2 8/3/2006 1278.22 1283.96 1271.25 1280.27

Hi all: I'm trying to plot two time series created in Rmetrics and label the x-axis with dates. I tried the following: dates <- as.Date(seriesPositions(x.agg)) r <- as.Date(range(dates)) ts.plot(x.agg@Data[,c(1,5)],gpars=list(ylab="Volume", lty=c(1:2),xaxt="n",main="Plot of Volume")) axis.Date(1, at=seq(r[1], r[2], length.out=10),