Search Archives

Continuing my previous e-mail, I have to correct a point: The function I used was actually the lm( ), not the aov( ), which does not seem to accept the Error( ) argument. -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien...

> Please stop sending the same message repeatedly: this is the *third* copy. I am sorry for the repeated messages and the unnecessary mail trafic in the list. It was not done deliberately. Outlook Express repeatedly crashed when I tried to...

First of all, I would like to thank you all for your help. I found the function "dist" in mva library. I also found a "sammon" function in the MASS library that uses "dist" and it is indeed functioning, so...

Dear list members, I would like to ask two questions, although the second one must have been answered a thousand times. 1) is there a simple way to estimate the influence of individual variables in PCR and PLS models? What...

Dear R-listers, I would like to ask if it is possible to create ternary diagrams with contours. I want to plot a property that depends on a ternary mixture composition, so I think this would be the best way...

Dear R-listers, I would like to ask if it is possible to create ternary diagrams with contours. I want to plot a property that depends on a ternary mixture composition, so I think this would be the best way...

Dear R-listers, I would like to ask if it is possible to create ternary diagrams with contours. I want to plot a property that depends on a ternary mixture composition, so I think this would be the best way...

Can anybody help me on this, please: I want to produce a normal probability plot of effects for an unreplicated design with 4 factors. 2 of the factors have 2 levels and the other 2 have 4 levels. Is it...

Please, forgive my ignorance on statistics, but I have a rather simple question concerning AIC. Small values of AIC mean good fit of the model. How about negative values of AIC? Is a model with AIC=0.5 considered to...

Dear list members, I have a statistical question, that doesn't belong to this list, and I apologise for that in advance but I would appreciate your help very much. Is there some convention for selecting the a level for...

Dear list members, I want to fit a linear model to a data set that contains several independent variables, some of them continuous and some of them binary. For the binary variables I am using 1-of-N encoding but...

Hello list members, I am new to this list and don't know very much about what R can do or how to program it, but I am interested in plotting 4 variables as sequential contour plots (or surface plots...

When I try to run the "sammon" function of the multiv package, I always get this error message: Error in as.vector(dist(a)) : couldn't find function "dist" It happens even with example(sammon). I am running R 1...

Dear list members, this is not an R question and forgive me for using the list for irrelevant questions, but this is the only place I know where I can find some good statisticians and I need an expert opinion...

Hello list members, this is rather a simple question but I can't find the solution myself, so I would appreciate your help and I apologise in advance for my ignorance. I have a data frame with a header containing...