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Hi R helpers, I was wondering if anybody knows if is possible to generate bootstrap values for a cluster analysis in R. What I am trying to do is obtain some confidence on the clusters formed by resampling the data set. A similar type of analysis is used in molecular taxonomy and the confidence values of each cluster are placed in the nodes of the dendogram. Any ideas on how to do this

With the same system configuration (WinNT4 SP6 and 1.7.0), I get such a Dr Watson crash each time I try to use the Change dir... command in the File menu of Rgui.exe. I doesn't seems to happen if I do this immediately after starting R but well if I already did some computation. I don't have any problem by using directly setwd(). At 12:10 23/04/03, you wrote: >Date: Tue, 22 Apr 2003

Dear all, I am trying to generate bootstrap replicate matrixes (rows=samples, column=species, sampling with replacement) from a matrix dataset, but I do not know how to do it in R. I have tried boot() and bootstrap(), but they require an statistic, which in my case is cluster analysis (generating bootstrap values for a cluster analysis is a topic that has been mentioned previously in

Hi everybody I was trying the R binary (1.7.0) for Macintosh (Carbon) and I tried to install some packages using "install.packages" and apparently this function was not implemented. I reloaded the base library since the "update.packages" function should be on it but did not work. Also I tried read.table and did not work either. Does anybody know if the base package

Dear R helpers, I have been using the loadings function from the multiv library and I get the typical output (see below). When I try to export these results to a file using a write.table() I get the following error message "Error in as.data.frame.default(x[[i]], optional = TRUE) : can't coerce loadings into a data.frame" Any idea why write.table is doing that and any

R gurus I have tried to install the R 2.0.1 binary for OS X and although the installation was successful I can get the application going. When I double click the icon R tries to load (R window shows briefly) and it quits immediately. This behavior was described in this list before and nobody found the answer to the problem. If you try to load the x11 version by typing "R" at

Dear R-helpers, I will like to know if there is a way to generate a stacked column graph using both patterns and colors to fill the bars. I have many categories for the number of color available in R, so I will like R to start with solid colors and then use patterns an colors. I have been using barplot and some code that I found in the archives, but I am still having bars with the