similar to: Post-Hoc Test for Kruskal-Wallis Rank Sum Test

Hi list, I was searching how to properly write a command line for a mixed ANOVA. Well honestly, there are so many material on the older post of the list that just confused me. I have five factors. Season (fixed) Beach (fixed) Line (fixed) Block (random) Strata (random) nested in Block And for each of the tree strata per block I got 3 replicates. I saw lots of things about

Hi list. I would like to know if someone had already successfully loaded and Arc/Info Ungenerated (.dat – extracted from http://rimmer.ngdc.noaa.gov/mgg/coast/getcoast.html) file on R. I’m able to do so with shape files using maptools functions, but these ungenerated data are making me crazy. I don’t have any of ArcGIS tools (one of them probably can do that), and I can’t find any free tool that

Hi R experts. I performed an Linear Discriminant Analysis (lda) and now I want to plot the first two axes (LDA1 and LDA2). Well MASS package have the plot.lda and pairs.lda to do that. But, they don’t let me personalize them, once they don’t accept the type=’n’ plot. So I start looking at the lda object properties, trying to found out my groups (n=4) axis coordinates, curiously I couldn’t. There

Hi List, I would appreciate any suggestion on how can I make a text I’ve inserted in a plot show some contrast? With this I mean that I have a white text on a plot and I would like to make a tiny border around it in black, so even being small sized and the entire graphic being small in the text page I’ll insert it. It will be visible. Well I tried inserting a box() function inside the text()

Hi List, here I go again. Well I need to save plotted objects as .eps using the postscript() function, well I can do that but all resulting object are perfect squared dimensions (x = y). I need a rectangular output something like x = 2y dimension. Is it possible? The I’m new to R and postscript image format! I’m doing this…

Hi list members. I’ll try to plot the abundance means of nine transects as lines, with five points on each transect (A to I). I will also need to plot for each point, it’s standard deviation (once each point will have tree replicates) as whiskers. Another problem will be that all the points should exist for each transect, but we know that six of the nine transects will have blanks (A1, A2, A3, -,

Hi, I'm a beginner with R, but I'm getting excellent results with it. Well I've got an capscale object (vegan package) and I want to made a biplot with symbols representing six groups of areas. With the plot.cca function and some par attributes (like 'labels') I was able to substitute the samples names for keyboard symbols ('x','o','#',ect), but it's

Hi everybody, well I'm trying to use barplot for the first time. I get a suitable graphic but I'm having a weird problem. My graphic is generated from a matrix with several species (rowNames) and two abundance columns. So each species will have two bars, and the species name should appear at left. Until now everything is Ok, but when a I plot it the species names (my labels) are cut by

Hi everybody, Well here is another doubt! I’m elaborating some maps, and I pretend to plot over it the abundance of species. I could do that using points(), but I’d like to use bubble() from sp package. When trying to use bubble() I face the fallowing issue: When I call the bubble function it overwrite everything I previously plotted. It doesn’t happen with points (obviously), only with

Hi everybody, I'm trying, without success, to avoid some variables labels to overlap on a capscale (vegan package) object graph. I was able to move the labels with the coding below, but it moves the entire vector... CAPobj<-CAPpotiFT for(i in c(2:8))CAPobj$CCA[[i]][,1]<-CAPpotiFTI$CCA[[i]][,1] CAPpotiFTI$CCA[[i]][,1][2]<-0.85 And here the graphic script

Dear R users, I would like to know if there is a way in R to execute a post-hoc test (factor levels comparison, like Tukey for ANOVA) of a non-parametric analysis of variance with kruskal.test() function. I am comparing three different groups. The preliminary analysis using the kruskal-wallis-test show significance, but I still don''t know the relationship and the significance level

He everybody, Well I have a biplot CCA-like origined from plot.cca (vegan package). I need to rotate on y axis the lines and symbols of constrained and sites representation. If I do that on an image editor, I rotate everything, including titles, axes labels and positions. I just need to rotate the inner par and keep the variables names (constrained) and symbols in the new positions but with the

Hi again List, Well this time I’m writing for a friend (really J). He needs to create a distance matrix based on an abundance matrix using the 1-Pearson’s R index. Well I told him to look at the proxy package, but there is only Pearson Index. He needs it to perform a clustering. Well, as soon as he told me there proxy only had the Pearson index I thought: “He could just do something like

Hello, I need nemenyi-test or any other post-hoc test for kruskal-wallis, but I just can't find out how to implement this in R. My data set is nitrite concentrations in four different groups which I intend to compare. The kruskal-wallis-test showed significance, but I still don't know between which groups these significances are. Can anybody help me with this? Thanks

Dear all, I run a kruskal wallis test and found significant results. Then, I conducted all pairwise comparisons and found no significant results. Could anyone please give me a hint as to why this happens or redirect me towards a specific web page where I can find more info? (I used alpha=5% and made no bonferroni or other correction for the pairwise comparisons) Thank you   Dr. Iasonas

Hi, I have searched and found a response to a question similar to mine but when I tried the code, R says it's not an actual function so I thought I'd ask here. http://r.789695.n4.nabble.com/file/n4633035/Cookies.csv Cookies.csv I have attached the data I am using. I am trying to look at two things: how moisture content changes over time, and how it changes along the length of a log

Hi there, I've got a small question : is there any post-hoc test for Kruskal rank sum test integrated in R ? I know that the Nemenyi test is one of the post-hoc that can be used, but there's no (to by knowledge) R function for it. What should I do ? Thanks, Etienne

Dear all, I've discovered the possibility to do the Nemenyi-Damico-Wolfe-Dunn test in the library(coin); oneway_test() With the given example I am unfortunately not able to reproduce the test. What does trafo and contrMat mean? I have a dataframe with 176 elements in 7 classes. It may be a problem, that my model isn't balanced? In Class1 I happen to have 4 elements, while there are 90 in

Hello, I have multiple data sets I would like to plot on the same XY scatterplot. The data sets have in common the same Y values. Could somebody tell me how to do this? I tried par(T=new) (I think this was it) but it literally overlays plots on each other. Thanks in advance. George

Hi everybody, I am a new R user. Is there any package devoted to "text mining" analysis in R ? Thanks Gilles lepape.gilles at neuf.fr