[R] SIMPER-similarity percentage

Hello, Does anyone know if the SIMPER analysis is implemented in R? It is a multivariate analysis that shows the contribution of a each variable in a group, and the variables responsible for the difference between groups. It is implemented in the statistical package PRIMER and is frequently

Re: [R] how to add error bar to the data in R?

Hello, Use the function xYplot from hmisc package cheers, Marta __ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html

Re: [R] heatmap help

Hello, I was just doing heatmaps myself ;-) and I had the same problem. It would be nice to have such an example in the help file because it is not clear (thank you). you use (for example... this is my case, which I am doing the distance matrix using vegdist function with Bray curtis

[R] plot.dendrogram

Dear R-users, I would like to change the labels size and format in the node ends of a dendrogram, how can I do it? How can I use different symbols/colors in each node ends ? I manage to do it with plot.cluster, but heat map uses plot.dendrogram. Can anyone help me please? thank you Marta

[R] filling patterns in image and examples

Dear R-users, I would like to do a image plot with patterns filling the squares instead of colors. How can I do it? Is there manuals with examples of image.plot? I search but could not find many. Thank you All the best Marta [[alternative HTML version deleted]]

Re: [R] Questions of t.test {stats}

Dear colegue, I am not sure if it is this what you want, but to apply the t.test to all rows in a data frame, you can do like: apply(dataframe, 1, t.test) If you want to store the results in a nice data frame, to us after, then you should do a function, for example:

Re: [R] Difference between two correlation matrices

Hello, I don't know if it is applicable in your case, but have you tried Mantel test? You can use it to determine significant correlation between two matrices, using Pearsion, Spearman or Kendal correlation indices. Hope it helps, All the best, Marta - Original Message - From: michael

[R] Fourier analysis

Dear colegues, Is there any function in R for calculating the four coefficients of each harmonic in fourier analysis, from a set of x,y coordinates is given? Is it possible to do Fourier analysis? Has anyone done contour analysis using R? Any help wil be apretiated, Thank you very much, All the

Re: [R] Column names of a data frame

). hope this helps, All the best Marta Rufino __ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html

Re: [R] plot.new?

Hello, Probably the only probem is that you have to do the plot first, than you put the line in. so, first: plot(x,y) # then you do the abline command. abline(coef..., col=2) Marta __ [EMAIL PROTECTED] mailing list

[R] plot discrimnant analysis

Hello, Does anyone knows how to do the plots from discriminant analysis (lda and qda)? Is there any computed function to do the stepwise procedure? thank you in advance Marta __ [EMAIL PROTECTED] mailing list

[R] MANOVA with random factor

Dear list members, I would like to know how do I define a MANOVA with a random factor (block) and two fixed factors (repeated measures designs)? What about if we want to see if a matrix is significantly different from zero? is there any nonparametric procedure available in R? thank you very

[R] Lattice graphs: lines, symbols and strips

, not overlaped. I tried jitter, but it did not worked (I am using xyplot). Could you please help me? Thank you very much in advance, Marta º`·.¸¸.·´¯`·.¸.·´¯`·...¸º`·.¸¸.·´¯`·.¸.·´¯`·...¸º `·.¸¸.·´¯`·.¸.·´¯`·...¸º`·.¸¸.·´¯`·.¸.·´¯`·...¸º`·.¸¸.·´ Marta Rufino Institut de

[R] warning in GAM

Hello, I have a problem when doing gam (from gam library; I am using R 2.4.0, windows xp platform) When doing: example(gam) There is this error message (which also happens when using my data) Warning: a final empty element has been omitted the part of the args list of 'list' being

[R] xyplot: different scales accross rows, same scales within rows

Dear list members, I would like to set up a multiple panel in xyplots, with the same scale for all colunms in each row, but different accross rows. relation=free would set up all x or y scales free... which is not what I want :-( Is this possible? Thank you in advance, Best wishes, Marta