similar to: need any advises for code optimization.

Dear r-help, I have an array a1 with dimensions [1:660,1:65,1:25] I would like the first dimension to be the last one. That is I want and array [1:65,1:25,1:660] The only way to do this, I know, is tmp.a<-array(dim=dim(a1)[c(2,3,1)]) for(i in 1:dim(a1)[1]) tmp.a[,,i]<-a1[i,,] a1<-tmp.a rm(tmp.a) Is it possible to avoid 'for' loop here? Thank you! ---

Dear r-help, I need to draw xyplot() graphs with several regression lines: one line for the whole range of x (the variable on the horizontal axis) and two additional lines for subranges of x. Is it possible to make first regression line (panel.lmline(x,y,...);) to be drawn on the whole graph and regression lines of the subsets to be drawn only over their subsets? I have defined

Hi all, >From a vector, I want to get the unique values and the counts of these unique values in the vector. For example, x<-c(2 ,1 ,2, 1, 4 ,2 ,1, 4 ,1 ,1) xu<-unique(x) xn<-numeric(length(xu)) for (i in 1:length(xu)) {xn[i]<-length(which(x==xu[i]))} There must be a very much simpler method of doing this. Can somebody direct me to the functions that I must read in order to do

Dear r-help, Please, be so kind, tell me what does mean the parameter of layout.show()? I use R 1.6.2... Windows NT 4.0 Unfortunately I cannot understand phrases from the help "n: number of figures to plot." what figures? "`layout.show(n)' plots (part of) the current layout, namely the outlines of the next `n' figures." what figures?

Hi I'm generating the following in a file and getting a syntax error: bryansAtHeaderLevel <- c(0,1,1,1,1,0,0,0,0,0,0,1,0,0,1,1,1,0,0,0,1,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,0,0,1,0,0,1,0,1,0,1,1,1,1,1,1,0,0,1,1,1,0,0,1,1,0,0,1,1,1,1,1,1,1,1,1,0,0,1,0,1,0,1,1,1,1,1,1,1,1,1,1,0,0,1,0,1,0,0,0,) finnsAtHeaderLevel <-

Dear r-help community, Thank you for your previous answers! Now I have strange behaviour of the lattice library funcitons. They do not draw graphics in the file when called from the script. I created the script file, called, for example, "a.R", containing the following library(lattice); trellis.device(device="png", filename="a.png",

Dear r-help, 1. I always find in TEMP directory subdirs named like Rtmp##### where ##### denote a number. Obviously, they are created by R and are not removed by it after finish. Why? I use R 1.7.0 and Windows NT Workstation 4.0, English. SP 6a. 2. Is it possible to get known whether my bug report was received? I've sent to r-bugs at biostat.ku.dk the following but it seemed

Dear r-help, Unfortunately I cannot find in the documentation what determines ranges of a 'box' in the box-and-whisker plot. It is said in "Simple R" (http://www.math.csi.cuny.edu/Statistics/R/simpleR) that they are 1st and 3rd Qus usually. I tried to add to boxplot lines with (quantile(x,probs=0.25)), but lines do not coincide with edges of boxes.

Dear r-help, I draw graphics with xyplot() function. Labels on the y axis are appearing as follows: "1.5, 1, 0.5, 0" I'd like to have them to be "1.5, 1.0, 0.5, 0.0", i.e. with fixed number of digits after the dot (one in this case). Is there any way to do this without implicit specifying labels? And some questions about font. Unfortunately I cannot

Dear r-help, Now I am drawing graphs with xyplot function. In order to place a legend under the plots I use the key argument in the xyplot function. One of the 'key' components is 'divide', which defines a number of points on the each line of the legend. The default is 3 points. I would like a single point, so I set divide = 1. Call to xyplot didn't produce

Hello Trying to install the MySQL package, I get the following error. The help archive contains something on this issue but did not help. I work on linux suse 9.3 Configuration error: Could not locate the library "libz" required by MySQL. The library libz however is not on any mirrors I checked. ------------------------------------------------ Sebastian Leuzinger web

Dear r-help, I've got data of the following structure 1979 93.428747 0 1979 87.298608 20 1979 78.506340 40 ... 1979 45.567890 340 1980 60.815289 0 1980 49.630904 20 1980 24.981362 40 ... The first column is year and the last one is the longitude. I need a set of graphs showing the dependence of the middle value on the longitude, for each year, situated one blow the other.

Dear colleagues, I have troubles while trying to display legend on the plot. I have data.frame fr > fr year M1 M2 1 1979 58.85198 56.77303 2 1980 57.59725 55.93749 3 1981 57.32133 55.55232 4 1982 54.69320 53.10566 5 1983 56.58973 55.03811 6 1984 58.81363 56.97641 7 1985 58.35583 56.82091 8 1986 60.41842 58.45457 9 1987

Dear laurent, > This is what I did to make the connection : > > drv <- dbDriver("MySQL") > > con <- dbConnect(drv) Here's the error. You should give the database name. drv <-dbConnect(drv, dbname="dfghdfgsdfgsdfgsdfgsdfgsdfgsdf") ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ > Then I should be able to send requests. But when I

Dear r-help, Function sd calculates the standard deviation 'with (n-1) denominator'. Are there any alternatives with n denominator? Thank you very much. -- Best regards Wladimir Eremeev mailto:wl at eimb.ru

Dear r-help, I have troubles with 'substitute'. I have the data frame with vectors data$area.0, data$area.20, etc... Command substitute(data$area.lon,list(lon=20)) returns data$area.lon but is expected to return data$area.20 Where did I do mistakes? -- Best regards Wladimir Eremeev mailto:wl at eimb.ru

Dear r-help I draw plots with xyplot() function. Each plot contains also a line of regression. I want to write the trend value and its significance (obtained with lm()) below each panel. I use ltext() for this. But the text is cut, when it comes outside a panel. Moreover (obviously), it doesn't appear at all when its coordinates are outside a panel. Could you,

Dear r-help, I need to unite contents of two files with variables into one data frame, produce some derivative variables from them and store them in that data frame. Here is the set of commands (processing first file for now) data7902<-data.frame(year=NULL,lon=NULL,area=NULL,extent=NULL,area.std=NULL,extent.std=NULL, area.norm=NULL,extent.norm=NULL);

Hello all, Research Systems (www.rsinc.com) have developed and distributes the language IDL, and the GIS ENVI, written in IDL. To my oppinion, R language is superior, compared to IDL, in all aspects. However, ENVI is the rather convenient and feature rich tool. Is anyone aware about any work, dedicated to the creation of something, similar to the ENVI, but in R? Also, recently,

Dear r-help, I have a matrix, suppose, 10x10, and I need the matrix 5x5, having in each cell a mean value of the cells from the initial matrix. Please, point me to a function in R, which can help me doing that. Digging the documentation and mail archives didn't give me a result. Thank you. --- Best regards, Vladimir mailto:wl at eimb.ru