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Hi all, This is a very basic question, but I just can't figure out why R is handling a loop I'm writing the way it is. Here is the script I have written: grid_2_series<-function(gage_handle,data_type,filename) series_name<-paste(gage_handle,data_type,sep="_") data_grid<-read.table(file=paste(filename,".txt",sep=""))

Hi, I am running a correlation analysis on a temporal dataset. I was wondering if you would receive the same tau and p values running the function: MannKendall(x), where x is the dependant variable that changes with time as you would running: Kendall(d,x), where x is the exact same dataset as the x entered into MannKendall and d is the date on which the observation was made (assuming that

Hi all, Forgive me for this basic question. I've been doing some research and haven't been able to figure out how to best do this yet. I have 75 variables defined as vector time series. I am trying to create a script to automate calculations on each of these variables, but I wasn't sure how to go about calling variables in a script. I am hoping to write a loop that calls a list of

Hi all, I am trying to write a script that will automate the task of running a Kendall's Tau correlation test on 75 time series that I am interested in. The code I have written is: for(i in 1:length(gagehandles)){ dates<-get(paste(gagehandles[i],"_amsd",sep="")) q<-get(paste(gagehandles[i],"_amsq",sep="")) taup<-Kendall(dates,q)

Hi all, When I attempt to run a script, I keep getting the error message shown below. I have seen from searching that the "Use of save versions prior to 2 is deprecated" could be an error resulting from a permissions problem, but I have been unable to find anything describing the "file has magnic number '# Coh'". The file I am attempting to read into the script is a

Hi, I am trying to create a loess smooth from hydrologic data. My goal is to create a smooth line that describes discharge at a certain point in time. I have done this using the 'lowess' function and had no problem, but I'm having some difficulty with loess. I am inputting the date ('date') and discharge ('q') values using the 'scan' function, then inputting

Hi all, I am trying to write a script that will compute Kendall's tau for a 75 time series (using the Kendall package) and will then write the tau and p values from the Kendall test to a text file table that can be read into Excel. I am having no problem calculating Kendall's tau and the associated p value for each time series, but I am having trouble figuring out how aggregate the

Hi all, I am attempting to run through a large set of data and sort events by the water year (1 Oct - 30 Sep) in which they occurred. I have no problem doing this for each individual site I am looking at (so my problem is not with most of the code, just one minor thing), but when I try to loop it to do the same things for each site, I run into problems. I think the root of my problem is that