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On 15/04/2018 17:26, Marc Girondot via R-help wrote: > Le 15/04/2018 ? 17:56, alireza daneshvar a ?crit?: >> break-down point > > Can you explain more what you plan to do and give an example of what you > have tried to do until now to do a "break down point" in R. Perhaps a > "break down point" is common in your field, but I have no idea about > what

Le 15/04/2018 ? 17:56, alireza daneshvar a ?crit?: > break-down point Can you explain more what you plan to do and give an example of what you have tried to do until now to do a "break down point" in R. Perhaps a "break down point" is common in your field, but I have no idea about what it is ! https://en.wikipedia.org/wiki/Breakdown_(1997_film) Sincerely Marc

Hi, I think he's talking about how much a statistical estimator is influenced by extreme datapoints, e.g. https://en.m.wikipedia.org/wiki/Robust_statistics#Breakdown_point Olivier -- Olivier Crouzet Assistant Professor @LLING UMR6310 - Universit? de Nantes / CNRS Guest Scientist @UMCG - University Medical Center Groningen / RijksUniversiteit Groningen > Le 19 avr. 2018 ? 11:00,

Dear members, I have a series of values in a vector and some value are missing and replaced with NA. For example: a <- c(27, 25, NA, NA, 24, 26, 27, NA, 26) I would like to replace the NAs with the value taken from the previous value that is non-NA. The output would be in this case: 27 25 25 25 24 26 27 27 26 Now I do that with a for loop, but I try to eliminate all the loops to gain in

Dear all For a model I need to combine several netCDF files into one (which works fine). For better overview I'd like to delete/remove some of the attributes. Is there a simple way doing this? I'm using the package netcdf4, which creates an object of class(nc) = "ncdf4". It seems that for earlier versions of netcdf objects, there was the function att.delete.nc{RNetCDF}. But

Dear all, I'm trying to understand how the strucchange package is working and I have been looking at the examples given for the Fstats() function. The first example (Nile), shows one peak in the F-stats and one breakpoint is estimated, that can be plotted using the following code ## Nile data with one breakpoint: the annual flows drop in 1898 ## because the first Ashwan dam was built

I define priors in jags within r using a gamma distribution. I would like to control the shape but I have problems. Any help will be usefull. From help of dgamma ___________________ The Gamma distribution with parameters shape = a and scale = s has density f(x)= 1/(s^a Gamma(a)) x^(a-1) e^-(x/s) and rate=1/scale From jags user manual ____________________ dgamma(r, mu) has a density of

Dear R users, I'm trying to use the "strucchange" package to determine structural breaks in an ARFIMA model. Unfortunately I'm not so familiar with this topic (and worse, I'm a beginner in R), so I don't know exactly how to specify my model so that the "Fstats","sctest" and "breakpoint" functions to recognize it and to calculate the

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Hello, I don't know if the problem originates from R-devel 3.2 or Rcurl itself. I post this message to the R-devel list and to the author of RCurl (duncan at r-project.org). > library("RCurl") Le chargement a n?cessit? le package : bitops > print(sessionInfo()) R Under development (unstable) (2015-02-03 r67717) Platform: x86_64-apple-darwin13.4.0 (64-bit) Running under:

I use R 2.15.2 on MacosX 10.8.2 I have a problem checking for a package that I want to submit in CRAN. When I check like that, no problem or warning are detected. system("R CMD check '[path]/phenology'") I create the .tar.gz package with that. The file phenology_3.43.tar.gz is generated. I can install the package and it works. system("R CMD build

Hi, I'm new to R. I have some daily soil moisture data for the year 1979 in netcdf format such as these sm19790101.1.nc sm19790102.1.nc . . . sm19791231.1.nc I need to average a variable called "sm" to monthly resolution. I've done these days = formatC(1:31, width=2, flag="0") ncfiles = lapply(days, function(d){ filename = paste("sm197901", d,

When ploting a timeseries, the months are shown with abbreviation in the current language of the system. For example, x <- seq(from=as.Date("2000-04-01"), length.out=100, by=1) y <- rnorm(length(x), 5,2) plot(x, y) Show for me "avi mai jui jul" as I use R with French language localization. I see in the Windows FAQ how to completely change the language of R, but I

Hi, I need to fit a piecewise linear regression. x = c(6.25,6.25,12.50,12.50,18.75,25.00,25.00,25.00,31.25,31.25,37.50,37.50,50.00,50.00,62.50,62.50,75.00,75.00,75.00,100.00,100.00) y = c(0.328,0.395,0.321,0.239,0.282,0.230,0.273,0.347,0.211,0.210,0.259,0.186,0.301,0.270,0.252,0.247,0.277,0.229,0.225,0.168,0.202) there are two change points. so the fitted curve should look like \ \ /\

Hi, all I have a medium sized data, 6 years. Each observation is a case with a date variable, such as '2004-08-02'. Some of the months didn't occur a case. I want to plot the 6 years data by month, and the Y_axis is the freqency of cases for each month, meaning 12*6=72 bars or points in the figure. I though of a method, 1st, using the months function, then ploting. But I need to

Hi, I have recently use the strucchange package in R with a single time series observation. I found it extremely useful in the testing of change points. Now, I am thinking of using the strucchange package with panel data (about 500 firms, with 73 monthly time series observations each). For each firm, I have to conduct the Fstats and breakpoints tests. Based on the test of each firm, I have to

HI i'm trying to detect breaks points in various flow time series, they all contains seasonality and trend my question is : i have to remove this seasonality and trend before apply the function breakpoints du package strucchange?? another question, the function breakpoints is similar to de Pettit tests ? or how does it realy works? THANKS!!!! DENISSE -- View this message in context:

Hi, I try to make my first package? The HelloWorld.R file is: #### HelloWorld.R #### #' showHello est une fonction R permettant d'afficher le message #' "Hello World!" sur la console. #' @title la fonction showHello() showHello <-function(){ cat("Hello World!\n") } I use the following procedure to get the tar: # set the working directory where the file is

Hi, does anybody know of a nice test to detect trend turning points in time series? Possibly with reference? Thanks, joerg

hello R-world, according to the strucchange package .pdf, "all procedures in this package are concerned with testing or assessing deviations from stability in the classical linear regression model." i'd like to test/assess deviations from stability in the Poisson model. is there a way to modify the strucchange package to suit my purposes, or should i use be using another