similar to: documenting overridden methods (for S4 classes)

Hi, I'm writing code to generate a plot, in which I draw a series of rectangles. So my code is of the form plot.new() plot.window( ... ) draw rectangle draw rectangle ... Is there a way for me to insert a PNG or PDF graphic at a specific position in the plot (ideally in plot coordinates)? I realize that this might probably be better done in a separate image editor, but if it could

Hi, I'm making a plot in which the title takes up two lines. The title contains a subscript but when I look at the plot it does'nt seem tocome out properly. The code I'm using is: xtxt = expression(paste('Observed -log( ', IC[50], ' )')) ytxt = expression(paste('Predicted -log( ', IC[50], ' )')) mtxt = expression(paste('Plot of Observed

Hi, I have a S4 based package package that was loading fine on R 2.5.0 on both OS X and Linux. I was checking the package against 2.5.1 and doing R CMD check does not give any warnings. So I next built the package and installed it. Though the package installed fine I noticed the following message: Loading required package: methods Error in loadNamespace(package, c(which.lib.loc, lib.loc),

Hi, I have some data which I was plotting using image(). I wanted to add a vertical color key to the plot and I found that heatmap.2 in gplots does let me add a color key. However, I was thinking of a vertical bar with the color range rather than the style that gplots provides. Is there any package (or code snippet) that would let me add a vertical color key to an image() or heatmap

Hi, I have a situation where I have a list of lists. Each list can contain elements of different types (but each one will be a scalar) say of double, integer or character. However the elements of each list are always in the same order: x <- list('a', 1, 2) y <- list('b', 3, 4) z <- list('c', 5, 6) a <- list(x,y,z) What I'd like to do is to convert a to a

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi, I'm a new user of R and have managed to make a plot of a histogram. Is there any way I set the title and axes labels and then save the plot as an image (png/gif)? Thanks - -- - ------------------------------------------------------------------- Rajarshi Guha <rajarshi at presidency.com> <http://jijo.cjb.net> GPG

Hi, I'm plotting 4 graphs on one page (2x2 matrix) but I cant seem to get the title for the whole page right. I'm doing: op <- par(mfrow = c(2,2), pty="s") hist(var$V2, breaks="FD",main="Euclidean Metric", xlab="Sum of 3NN ... hist(var$V2, breaks="FD",main="Manhattan Metric", xlab="Sum of 3NN ... hist(var$V2,

Hi, I'm using the ks.test() on two vectors. I looked up the reference and also coded up a version of the two sample Smirnov test. My question is that how can I decide from the output of R that the two vectors x & y come from the same distribution? Am I correct in assuming that smaller D values indicate that they come from the same distribution? In addition how can I use the p value that

Hi, is there a way to plot distribution curves (say normal or chi sq etc) from within R? For example I looked up the *chisq family of functions but I'm not sure as to how I would use them to generate a plot of the chi sq distribution (for arbitrary d.o.f). Thanks, ------------------------------------------------------------------- Rajarshi Guha <rajarshi at presidency.com>

Hi, is there a function in R that will give me the variances of a predicted values obtained using predict.lm(). If no function is available I would need to calculate them myself - which involves taking the inverse of X'X (' indicating transpose) where X is my model matrix. I know that calculating an inverse directly is not a good idea in general - could anybody suggest a way around

Hi, I'm trying to take a set of rows and columns out of a matrix. I hve been using the index aray approach. My overll matrix is X and is 179 x 65. I want to take out 4 columns and 161 rows. Thus I made a 161 x 2 array I and filled it up with the row,col indices. However doing, X[ I ] gives me a vector of the extracted elements. Is there anyway I can coerce this into a 161 x 4 matrix?

Hi, this question is probably very obvious but I just cant see where I might be going wrong. I'm using the lm() function to generate a linear model and then make predictions using a different set of data. To generate the model I do (tdata & pdata are matrices of observations and parameters, tdepv, pdepv are response vectors) x <- as.data.frame(tdata) x$tdepv <- tdepv

Hi, I have a rectangular matrix and I need to check whether any columns are identical or not. Currently I'm looping over the columns and checking each column with all the others with identical(). However, as experience has shown me, getting rid of loops is a good idea :) Would anybody have any suggestions as to how I could do this job more efficiently. (It would be nice to know which

Hi, I'm trying to translate some Matlab code to R and I'm trying to implement the behavior of Matlab's sort() which when applied to a matrix will sort the columns returning the column sorted matrix as well as a matrix of permuted indices. Doing: > x <- matrix(c(3,4,2,6,3,4,8,7,5), nr=3) > x [,1] [,2] [,3] [1,] 3 6 8 [2,] 4 3 7 [3,] 2 4 5

Hi, I have an old version of the Rggobi package which now wont load (R 2.0.0). Looking for the package on CRAN does'nt turn up anything and the links on http://www.ggobi.org/RSggobi.html don't work. Does anybody know where I can get the latest version of RSggobi or Rggobi? Thanks, ------------------------------------------------------------------- Rajarshi Guha <rxg218 at

Hi, I am working on a Java project that will run primarily on Windows. As part of the project I would like to use the R engine. However, from what I have seen on this list & the SJava list, installing SJava on Windows can be troublesome. As a result I was wondering if anybody had used DCOM to access R from a Java program on Windows (if it is all possible). Any pointers to documents and/or

Hi, is the following possible - in a given session I make a lot of objects and save when exiting. Usually I note down seperately what each object is about. Is it possible to attach data to any object which would essentially be a short note explaining the meaning of it? Thanks, ------------------------------------------------------------------- Rajarshi Guha <rxg218 at psu.edu>

Hi, I'm using nnet to work on a 2 class classification problem. The result of my code is data.frame of true class, predicted class and associated probability. One way of summarizing the data is by a confusion matrix. However are there any graphical ways I could represent the data - specifically, I'd like to show the probabilities associated with each member of my prediction set? (I

Hi, I was wondering if there are any packages available that can represent mathematical graphs along with functions to manipulate them? Google did'nt turn up anything ( I may be asking too much of R :-/ ) Thanks, ------------------------------------------------------------------- Rajarshi Guha <rxg218 at psu.edu> <http://jijo.cjb.net> GPG Fingerprint: 0CCA 8EE2 2EEB 25E2 AB04

Hi, I had some Java code that worked with SJava 0.65 under R 1.8.*. I'm trying to get it to work with R 2.0.0. My JVM is Sun 1.5.0 (running on Fedora Core 2) I downloaded and installed SJava 0.65 in my personal directory using R CMD INSTALL SJava-0.65.tar.gz -l ~/src/Rlibrary and before starting R I sourced RJava.bsh. However after loading the SJava library if do javaConfig() I get