similar to: variable as part of file name

How can I automatically exclude one variable from being saved in the workspace when I quit an R session? The problem is I don't know how to erase a variable once it has been created. Background: I open a connection called "con" to a database server in my ~/.Rprofile. Obviously, the connection expires when quitting the R session. Unfortunately, the workspace is loaded after

Hi R, A simple question, but don't know the answer... x="a" a=5 I need to remove the object "a" by using only x. something like rm(somefunction(x))...Is this possible? Shubha Karanth | Amba Research Ph +91 80 3980 8031 | Mob +91 94 4886 4510 Bangalore * Colombo * London * New York * San José * Singapore * www.ambaresearch.com This e-mail may contain

hi, I am using rpart with a continuous response variable. Is there a way to extract 95% confidence intervals for the predicted mean at each node? cheers. -- View this message in context: http://www.nabble.com/rpart-confidence-intervals--tp18601587p18601587.html Sent from the R help mailing list archive at Nabble.com.

Hello, A newbie to R. I am trying to use the exonmap package in R. According to the docs, the xmapDatabase() command should read the config file with all the connection parameters and connect to the DB. But i get the error shown below.... > xmapDatabase("Human") Error in mysqlNewConnection(dbDriver(drv), ...) : RS-DBI driver: (could not connect cagadmin at mysql2.cag.chop.edu on

I can't figure this one out- I am the administrator, The file that I want to install is a .tar.gz which is located on my desktop. How do I get it into my packages directory- through the GUI or through brute force? thanks stephen -- Let's not spend our time and resources thinking about things that are so little or so large that all they really do for us is puff us up and make us feel

Hi everybody, I am currently working with R and I would like to create jpeg graphs with it. I am working on Windows and Unix but I would like to be able to create graphs (jpeg, png, bitmap...) under Unix. I am working on Solaris version 8. The documentation for R states that the latest version of or R known to compile on Solaris 8 is version 2.6.2. I have been able to compile and install R

Hi Is it possible to subset an n-dimensional array by a vector of n dimensions? E.g. assume I have > x <- array(1:24, dim=2:4) > x[1,1,2] [1] 7 > dims <- c(1,1,2) I would like a function that I can supply x and dims as parameters to, and have it return 7. Also, I would like to do something like: > x[1,1,] [1] 1 7 13 19 > dims2<- c(1,1,NA) And have a function of x and

Dear R Users; I am an R user who has recently bought a new laptop;Toshiba Satellite U405 running on both Windows Vista and Ubuntu. I have problems on the wondows vista when installing packages. The argument 'lib' is missing. How do i solve this problem? Illustration: > install.packages("epicalc") Warning in install.packages("epicalc") : argument 'lib'

Dear list, I have to compare two digital elevation models in raster format (geotiff). I then have to calculate the differences in altitude for each cell and make some statistics (basic as mean, median, std, range but also more "advanced" as RMSE) on that. I do not know very much how to proceed: 1) is it possible to import the geotiff in R? If so with which package? if not which is the

Dear list, I just tried to use the function cluster.stat in the package fpc. I just have a couple of questions about the syntax: cluster.stats(d,clustering,alt.clustering=NULL, silhouette=TRUE,G2=FALSE,G3=FALSE) 1) the distance object (d) is an object obtained by the function dist() on my own original matrix? 2) clustering is the clusters vector as result of one of the many clustering methods?

Hi R, I need to generate 50 random numbers (preferably poisson), such that their sum is equal to 100. How do I do this? Thank you, Shubha This e-mail may contain confidential and/or privileged i...{{dropped:13}}

Dear all, I wrote a simple script in order to put together some functions and method to be executed on various files I am trying to have to possibility to call the script changing few parameters in order to use the different files. I succeeded partly using the function method. However in my script I call the sink() function in order to output the results to a .txt file. When using the function the

Hi there, I have just started using the MASS package in R to run M-estimator robust regressions. The final output appears to only give coefficients, degrees of freedom and t-stats. Does anyone know why R doesn't compute R or R-squared and why doesn't give you any other indices of goodness of fit? Does anyone know how to compute these in R? Sophie -- View this message in context:

Estimados Escribo para consultar sobre el uso de modelos mixtos anidados. Los datos que estoy analizando provienen de censos de malezas en cuatro tipos de paisajes de la región pampeana, en los que seleccioné al azar igual número de lotes agrícolas cultivados con tres cultivos (maíz, soja y trigo-soja). En cada lote censé el número de especies de malezas en tres posiciones: el alambrado, el borde

Hello As a postgrad I have been helping an undergraduate student with R coding but she has a problem with R studio on her laptop which I can't fix - basically when she runs a plot it appears without a y axis label with the black line plot frame hard against the plot window and the bottom of the plot, where you would expect to see the horizontal axis and the x axis label etc is completely

Hi guys, It would be great if you could help me with this one... I'm looking to create a script to convert a matrix of species abundance e.g: <http://r.789695.n4.nabble.com/file/n4643978/species_matrix.jpg> into two vectors e.g: <http://r.789695.n4.nabble.com/file/n4643978/communitylist.jpg> ---------------- If you feel there is no easy answer to this and that it would be

Dear Lists, I try to configure Samba as PDC LDAP backend with Linux-Suse-9.1 and smbldap-tools form www.idealx.org, I follow guide from SMB-3 by Example book. Step by step installation and configuration came with no error. except i couldnt join w2k workstation to the new domain with administrator account. # /var/lib/samba/sbin/smbldap-usershow administrator dn:

Hi, Just a quick query - if I'm creating a function to produce a number of histograms per page of output (one per column from a matrix), how can I pass the column name of the matrix into the title (or indeed to form part of the x-axis label)? TIA, Laura Laura Quinn Institute of Atmospheric Science School of Earth and Environment University of Leeds Leeds LS2 9JT tel: +44 113 343 1596 fax:

Ok, I have reinstalled R-1.9.0 and this appears to have fixed the problems I was having with png(). However, I have a further question regarding png() Is it possible to pass a par() argument to the png() command? I am wanting to produce 4 plots per object, which I normally acheive on an X window by par(mfrow=c(1,4)). I have tried calling a new plot and setting par in this way but this has no

Hello, I requested help a couple of weeks ago creating a dipole field in R but receieved no responses. Eventually I opted to create a 3d sinusoidal plot and concatenate this with its inverse as a means for a "next best" situation. It seems that this isn't sufficient for my needs and I'm really after creating a continuous 3d gaussian mesh with a "positive" and