search for: npmc

HI, I am a new user of R and want to analyse some data using npmc. My data have several levels of factor (Site, Year and Season) and several variable (Percentages). I have tried to use npmc but I always get an error message. My data are in a table following this example: Site YEar Season Var1 Var2 .... A 2009 Dry 10 56 B...

Hi, I sent an earlier message concerning this, but perhaps I wasn't clear enough. Up until about a month ago, I downloaded packages by clicking on the filename of the package. Now this action leads me to a directory listing, e.g.: drwxr-xr-x hornik/users 0 2002-03-20 18:00:54 npmc/ -rw-r--r-- hornik/users 314 2002-03-20 11:33:42 npmc/DESCRIPTION -rw-r--r-- hornik/users 202 2002-03-20 11:49:40 npmc/INDEX -rwxr--r-- hornik/users 99 2002-03-20 12:18:34 npmc/build drwxr-xr-x hornik/users 0 2002-03-20 12:18:15 npmc/man/ ... from which I cannot download anything. I...

Hi folks, sorry if this has been answered before, I searched long and hard before deciding to make a thread. I'm trying to include multiple variables in a non-parametric analysis (hah!). So far what I've managed to figure out is that the NPMC package from CRAN MIGHT be able to do what I need, but I can't get it to. First I created a dataset as NPMC calls for. > Ind=Individual | <- predictor > D=Day | <- predictor > S=Sex | <- predictor > hand = handlingtotal | <- respon...

Hi, I'm having trouble getting the function `npmc' working. I have a 2 column 30 row table called `mydata': > npmc(mydata, df=2, alpha=0.05) Error in sort(unique.default(x), na.last = TRUE) : `x' must be atomic > is.atomic(mydata) [1] TRUE Is there anything I have overlooked? Am I invoking the function correctly? I wasn't...

...Letter=="D"] e=Z[Letter=="E"] Next I tested normality and variance assumptions and the data was not normal and the variances were not equal. So I ran a kruskal wallis test. kruskal.test(Z~Y) came by with p<<0.05 for the group means not being equal. Next I loaded the npmc library library(npmc) The npmc command calls for a dataset. I think my problem lies in the following commands and how they interact with the npmc command. I also tried just one response variable and a class variable like described in the help file but received errors. dataset<-data.f...

Hi there, I am having a problem with package npmc. If I use the included datasets (brain, kronen) everything is fine, but if I try and use my dataset I receive an error message: Error in probval.GenzBretz(algorithm, n, df, lower, upper, infin, corr, : NAs in foreign function call (arg 2) In addition: Warning message: In probval.GenzBretz(algo...

I followed the threads that enquired about doing post-hoc tests after doing Kruskal testing. It took me to npmc. But npmc is giving an output I do not understand. I noticed a thread entitled "npmc function: 'x' must be atomic" but there never appeared to be a resolution. > npmc(npmcinput) Error in sort(unique.default(x), na.last = TRUE) : 'x' must be atomic Here is th...

Hi, I recently tried to conduct non-parametric multiple comparison with npmc package, and encountered some problem; sometimes it stopped with following error. Error in uniroot(f = function(arg) p - z.dist(arg, corr = corr, df = df, : f() values at end points not of opposite sign Although I'm not quite sure about calculation of z.quaintile in npmc.R, it s...

Hi Does anyone know where is the package: npmc (Nonparametric Multiple Comparisons). I found the reference on R Site Search, but not the package itself on CRAN as suggested. Thanks Mauricio

Hi, I am using R 2.10.1 and I have a doubt. Do you know how many cases can R handle? I want to use the library npmc but if I have more than 4,500 cases I get an error message. If I use less than 4500 cases I don´t have problems with this library. Is there any way to increase the number of cases in order to use this library. Thanks in advance Julio Flores [[alternative HTML version deleted]]

...he dependent variables are ordinal, resulting from (summed) likert-scaled questionnaire data. From what I've read, I could use a wilcox.test on pairs of conditions and adjust the p level, but is there something in R that does a better job/automates this. I've seen references to the npmc package but that doesn't seem to do what I'm looking for, because it only accepts a data frame with two columns - i.e. there's no way to specify grouping/subject identifiers. Thanks, Jon Marbach PhD Student, Computer Science Department University of Colorado

...onsider taking over as maintainer of the respective package. Otheriwse we will orphanize the packages after the release of R 2.1.0 in 10 days. In addition, the Orphaned directory of CRAN currently contains anm,2004-09-30,1.9.1 fdim,2004-09-30,1.9.1 kza,2005-01-15,2.0.1 meanscore,2004-09-30,1.9.1 npmc,2004-09-30,1.9.1 phyloarray,2004-09-30,1.9.1 seao.gui,2004-09-30,1.9.1 seao,2004-09-30,1.9.1 twostage,2004-09-30,1.9.1 We try hard to keep all packages on CRAN working "out of the box", hence we need to remove packages that are no longer actively maintained. Best, Fritz -- ----------...

[Moderator: This was erronously sent to R-announce, and filtered fortunately ] Hi, This is my first time to use R. I'm wondering which function I can use to do multiple comparison. I have an lm object and want to do multiple comparison based on this object. Splus has a function multicomp() but I could not find a similar one in R. Thanks in advance. Really appreciate it. Julie

Dear all Is there any way of doing a Tukey HSD post-hoc test after a Kruskal- Wallis or Friedman rank sum test (in the ctest package)? Thanks in advance, Albertus Dr. Albertus J. Smit Department of Botany University of Cape Town Private Bag Rondebosch 7700 South Africa Tel. +27 21 689 3032

Dear Rusers, As we all know , there are many methods to do multiple comparison in the parametric statistical analysis, But i can't find some in nonparametric statistical analysis. Could anybody give some suggestions? [[alternative HTML version deleted]]

I have insect data from twelve sites and like most environmental data it is non-normal mostly. I would like to preform an anova and a means seperation like tukey's HSD in a nonparametric sense (on some sort of central tendency measure - median?). I am searching around at this time on the internet. Any suggestions, books, etc. would be greatly appreciated. -- Stephen Sefick Research

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Hello all, Here goes one of my first functions. I want to make a nonparametric multiple sample comparison with unequal sample sizes (see Zar?s Biostatistical Analysis, 3rd. Ed., pg. 201 Example 10.11, pg. 288 Example 11.10). In the real world, I want to compare samples of fish length captured with different fishing gears. After using the Kruskal-Wallis test I want to check the differences