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...ed base packages: [1] tcltk stats graphics grDevices utils datasets methods [8] base other attached packages: [1] TeachingDemos_2.7 tkrplot_0.0-19 loaded via a namespace (and not attached): [1] tools_2.13.0 Thanks, -- Gregory (Greg) L. Snow Ph.D. Statistical Data Center Intermountain Healthcare greg.snow at imail.org 801.408.8111

I remember in one slide of Prof. Ripley's presentation overhead, he said the most popular data analysis software is excel. So is there any resource or tutorial on this topic? Thank you so much!

Hi, How to mark points on x axis of a graph keeping x axis as constant and changing y from y1 to y2 respectively. I want to highlight the area from y1 to y2. Any suggestions Thank you Jeet [[alternative HTML version deleted]]

hello, i did several binomial tests and noticed for one sparse dataset that binom.test(1,1,0.5) gives a p-value of 1 for the null, what i can't quite grasp. that would say that the a prob of 1/2 has p-value of 0 ?? - i must be wrong but can't figure out the right interpretation.. best, kay ----- ------------------------ Kay Cichini Postgraduate student Institute of Botany Univ. of

# how would I code in R to look at the letter of the alphabet # in the second column and create a indicator column for the # corresponding letter? data(InsectSprays) InsectSprays$spray

...lylim arguments specifically, then it should not run into the problem you are seeing (I hope). If that does not work, then send a small reproducible example (the dput command is great for the data part) which will help us find the problem. -- Gregory (Greg) L. Snow Ph.D. Statistical Data Center Intermountain Healthcare greg.snow at imail.org 801.408.8111 > -----Original Message----- > From: Rodrigo Aluizio [mailto:r.aluizio at gmail.com] > Sent: Thursday, December 09, 2010 12:27 PM > To: Greg Snow; 'R Help' > Subject: RES: [R] Barplot with "Independent" Lines Y axis &...

Hi, I would like to create a list recursively and eliminate my for loop : a<-c() a[1] <- 1; # initial value for(i in 2:N) { a[i]<-a[i-1]*b - c[i-1] # b is a value, c is another vector } Is it possible ? Thanks -- View this message in context: http://r.789695.n4.nabble.com/How-to-eliminate-this-for-loop-tp3031667p3031667.html Sent from the R help mailing list archive at Nabble.com.

Hello all!!! 1) I am wondering is there a way to generate random numbers in R for Bivariate Uniform distribution? 2) Does R have  built-in function for generating random numbers for any given bivariate distribution. Any help would be greatly appreciated !! Good day! Haneef Anver [[alternative HTML version deleted]]

Hi, Can I rotate a plot (e.g. a distribution plot) by 90 degrees? The barplot function provides the "horiz" command but that's not availeable for the base package functions. I found an old advice from Paul Murrell on a similar problem suggesting to use viewports (grid package). Yet I couldn't reproduce his examples successfully. And going through the examples in the current grid

Hello, Anyone who knows a fast and accurate algorithm for generating draws from an underdispersed Poisson distribution. Or even better, if there is a package containing such an implementation. Thanks Rene

I have some data fit to a smooth.spline object as follows: (x=vector of data for the predictor variable, y=vector of data for the response variable) fit <- smooth.spline(x,y) Now, given a spline fit point y_new, I want to be able to find out what value of x_new yielded this fit value. How to do so? (This problem is the inverse of the predict.smooth.spline function, which takes x_new as input

Dear R-list, I have made a simple kernel density estimation by x <- c(2,1,3,2,3,0,4,5,10,11,12,11,10) kde <- density(x,n=100) Now I would like to know the estimated probability that a new observation falls into the interval 0<x<3. How can I integrate over the corresponding interval? In several R-packages for kernel density estimation I did not found a corresponding function. I

[I am really sorry if it is double posted, I doubt me previous post could not reach forum due to some problem with net] Suppose I have a matrix : a = matrix(1:9, 3) >From this matrix, I construct 9 additional matrices : i = 1:9 bi = a * i Now combining all those 9 new matrices, I construct a final metrix as : c = b1 b4 b7 b2 b5 b8 b3 b6 b8 I want to automate this procedure for any

..., I have set the options to keep the source to TRUE before calling install.package, but that does not seem to work. Is there a way to "strongly encourage" the source to be kept for this function (or the entire package)? Thanks, -- Gregory (Greg) L. Snow Ph.D. Statistical Data Center Intermountain Healthcare greg.snow at imail.org 801.408.8111

My code is the following: point_type<-c("black","gray20","red"....) ... for (i in 1:dim(m)[1]) { par(pch=(18+i)) par(fg=point_type[i]) plot(m[i,], type='b', ylim = c(lower, upper), type = "l", ...) par(new=T) } Now I need to add an 'explanation' to each pch. I would have a box in the upperright

Hi all, I have two questions. Can some one give some help? The first question is regarding the pair of operators "&" and "&&". What is the difference between the two? The second question is regarding "<-" and "=". Usually we use "<-" as the assignment operator. I saw some people use "=". Is there any

I would like to compare every column in my matrix with every other column and get the r-squared. I tried using the following formula and looping through every column: > summary(lm(matrix[,x]~matrix[,y]))$r.squared If I have 10,000 columns, the loops (10,000 * 10,000) take forever even if there is no formula inside. Then, I attempted to vectorize my code: > cor(matrix)^2 With 10,000

Dear Friends, Here is an algorithm for finding concave hulls: http://get.dsi.uminho.pt/local/ Has anyone implemented such an algorithm in R? RSiteSearch('concave hull') didn't reveal one (I think). _____________________________ Professor Michael Kubovy University of Virginia Department of Psychology Postal Address: P.O.Box 400400, Charlottesville, VA 22904-4400 Express Parcels

...is some other warning generated, then I will miss the other warning(s). Is there a better way to write the null to the text file? Or is there a way to suppress just this warning without suppressing any other warnings that may occur? Thanks, -- Gregory (Greg) L. Snow Ph.D. Statistical Data Center Intermountain Healthcare greg.snow at imail.org 801.408.8111

Hi, somebody can help me. Idon't understand very well the manual of the this package, I suppose I must enter "wdtxtStart", before I start working, but is supposed that this command should open Word, but nothing happens. I use Rgui, not Rcmdr. Thanks ----- Mario Garrido Escudero PhD student Dpto. de Biolog?a Animal, Ecolog?a, Parasitolog?a, Edafolog?a y Qca. Agr?cola Universidad de