Re: [R] merging lists within lists via time stamp

2011-08-08 Thread tomtomme
still no answer? I´ll try to be more precise and will ask on stack-overflow too... I´ve got multiple data.frames of gps- and temperature-data within a list. One data.frame looks like: GPS: date time x.lat x.lon 1 22.05.11 13:50:37 53.57908 10.034599 2

Re: [R] merging lists within lists via time stamp

2011-08-09 Thread tomtomme
Wow that worked! Thank you very much. Next time I will try this number generator thing. Thanks for the hint. I had no idea, that this might have caused the silence. Thomas. -- View this message in context: http://r.789695.n4.nabble.com/merging-lists-within-lists-via-time-stamp-tp3712631p3729785.h

[R] renaming multiple columns + interpolating temperature series

2011-06-28 Thread tomtomme
Greetings R Users, I´m new to R but at least managed to read in multiple files: filenames <- list.files(path=getwd()) numfiles <- length(filenames) for (all_temp in c(1:numfiles)) { filenames[all_temp] <- paste(filenames[all_temp],sep="") assign(gsub("[.]ASC$","temp",filenames[all_temp]),r

[R] time series interpolation

2011-06-29 Thread tomtomme
Hi there, I´ve got a datatable in R which I try to interpolate with this and get the Error below: > new$temp<- approx(w03_11temp$temp, n = (nrow(w03_11temp)*5))$y Error in new$temp <- approx(w03_11temp$temp, n = (nrow(w03_11temp) * 5))$y : Object of type 'closure' not registered Any idea?? T

Re: [R] RES: time series interpolation

2011-06-30 Thread tomtomme
Thanks for the hints. Eitherway I´ve found another solution now: w03_11temp<-read.delim2("w03_11.ASC", fileEncoding="ISO-8859-15", skip = 4) colnames(w03_11temp) <- c("date", "time", "temp") library(zoo) w03_11temp_z <- zoo(w03_11temp$temp, as.POSIXct(paste(w03_11temp$date, w03_11temp$time),

Re: [R] RES: time series interpolation

2011-06-30 Thread tomtomme
I appologize, I should have mentioned that by myself, but was in such a hurry... - I myself would never have found a solution Thanks again! -- View this message in context: http://r.789695.n4.nabble.com/time-series-interpolation-tp3633193p3635733.html Sent from the R help mailing list archive

[R] accessing names of lists in a list

2011-07-06 Thread tomtomme
After importing multiple files to data.frames in R, I want to rename all their columns and do other operations with them. The data.frame names are not continuous like 1, 3, 4, 6. I could not find a way of creating a list of the data.frames and loop this and ended up putting them into a list first:

[R] merging lists within lists via time stamp

2011-08-02 Thread tomtomme
>From multiple data.frames I created two lists, one with temperature, one with gps data. With your help and lapply I managed to interpolate the timestamps of gps and temperature data. Now I want to merge/join both lists via the time-stamp, taking only times, where both lists have data. For the sin