search for: mannkendall

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 the order is the same as the data I entered into the Kendall fu...

...a time series. I have downloaded and installed the package Kendall and subsequently loaded it into the software. My time series is a .txt file with 2 columns - column 1 is the year (1985 - 2009) and column 2 is the corresponding entry variable. According to the R guidelines, the call should be: MannKendall(x) [whereby x is a data vector, usually a time series] As such, I've loaded in my file 'data.txt' and then called on: MannKendall(data), to which I get the following: Error in Kendall(1:length(x), x) : length(x)<3 What do I need to do to get beyond this highly annoying error? I&...

...e how to go about calling variables in a script. I am hoping to write a loop that calls a list of variable names and runs several tests using each of the datasets I have entered. For example, say I have a defined 5 variables: var1, var2,...var5. How could I create a script that would run, say, a MannKendall correlation test on each variable? Thank you very much, and again, sorry for the rudimentary question. Billy -- View this message in context: http://r.789695.n4.nabble.com/Basic-Looping-Trouble-tp3394860p3394860.html Sent from the R help mailing list archive at Nabble.com.

Hello does anyone know how to set the confidence level within the seqMK() function in the pheno package. It seems to be set automatically at 0.05 and there seems to be neither an input function to set a different level, as there are with some changepoint functions, nor an output to give one the p-value of the changepoint identification which you get with functions ie func$p_value etc ... Thanks

Hello, I thougth that there is a function which does the kendall test in R, I writed on the console apropos("kendall") and I didn't found anything can you tell me how could I do to use the kendall test? Thanks. _____________________________________________________________________________ l [[alternative HTML version deleted]]

...   Year 1 | Year 2 | Year 3 | ... Site 1        x           x          x       ... Site 2        x           x          x       ... Site 3        x           x          x       ...   ...           ...          ...         ...      ... (where 'x' represents different values) There's the MannKendall() function on package 'Kendall' and the tau() function on package 'pheno', and I guess they should do the trend detection I need. The problem is I don't know how to manipulate my data in order to get the results. Should I run the M-K test on each Site, on each Year or on the ent...