search for: postgrads

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

Hi I'm a postgrad in ecology, and have recently started to use R. I'm planning to model various sets of animal abundance (i.e. count) data in relation to habitat data using glm's and/or glmmPQL's. However, some of my potential response variables have many zeros. From what I gather the "family = ..." option in the command line does not allow for the direct

(Sorry for the slightly off topic post) I'm giving a talk (on data mining) to some non-statisticians (who're all postgrad students, but a mixture of Science and Commerce majors). My intention is to show them the importance of statistics when doing data mining. What I'm thinking of doing is using, hopefully, two datasets. One from scientific area and another that is

I have a statistical problem which has given me no end of grief recently, and am posting here in the hope that somebody can give me a straight answer. I'm a IT postgrad, not a statistician, so people may have to speak really slowly and clearly for me to get it :) I am collecting simulation data, and the results are geometrically distributed (or approximately so). From what I can gather

I have R version 2.9.1 on my computer and the anlaysis is not working because I need to update to R version 2.12.0 the latest release. The person incharge of IT tried to download R version 2.12.0 but .exe file referenced in install isn't there - What might we be doing wrong? We have downloaded as tar.gz, uncompress then look for .exe file but not present. Many thanks, Morris

I have Samba running as a PDC and it works perfectly, until that is, a Win 2000 user authenticated by the PDC and with a profile on the Samba server wants to access Word and then after a minute or so Word crashes, I got the same result with a Redhat PDC and also with an SME server distro. Informed suggestions other than dump Word are very welcome... John Russell Digital Media Lab University of

Dear Spencer and Prof. Fox, Thank you for your replies. I'll very appreciate, if you have any ideas concerning the problem described below. First, I'd like to describe the model in brief. In general I consider a model with three equations. First one is for annual GRP growth - in general it looks like: 1) GRP growth per capita = G(investment, migration, initial GRP per

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, We just ran up against a "Memory exhausted" error trying to manipulate a 7Mb data file on R 0.61.1 FreeBSD-2.2.5, so I checked the manpage and discovered the "-v" option. However, I can only run "R -v 11". Anything higher gives the following: > R -v 12 R : Copyright 1998, Robert Gentleman and Ross Ihaka Version 0.61.1 Alpha (January 12, 1998) [...startup

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

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

Hi, I hope somebody can help me on how to use the hypergeometric function. I did read through the R documentation on hypergeometric but not really sure what it means. I would like to evaluate the hypergeometric function as follows: F((2*alpha+1)/2, (2*alpha+2)/2 , alpha+1/2, betasq/etasq). I'm not sure which function should be used- either phyper or qhyper or dhyper Where

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.

Version 1.0 of my CIFS based NT authentication system for PAM is available from http://www.csn.ul.ie/~airlied/pam_smb/pam_smb-1.0.tar.gz or ftp://ftp.csn.ul.ie/pub/linux/pam/pam_smb/pam_smb-1.0.tar.gz This release has now gotten GNU configure support and should work reliably on Linux RH4.2, RH 5.0 and Solaris 2.6.... If anyone has another platform with PAM could they try it out ... It is also

Dear All, I am writing to ask if you would please test our first public release of Rcgi, a CGI WWW interface to R. We've added a few new tricks to what has gone before, the most interesting of which is the ability to use "embedded code": you can mix user input and code, allowing the HTML author to do anything from load in data sets to enter most of the commands for users without

...S; do \ $(INSTALL_DATA) $${f} $(rhome); \ # LINE 49 done) Any ideas?! Thanks Gary Collins. /********************************************************************* Gary S. Collins, G.S.Collins at exeter.ac.uk School of Mathematical Sciences, http://msor.ex.ac.uk/PostGrads/gary/ University of Exeter Tel: +44 1392 264465 Laver Building, Fax: +44 1392 264460 North Park Road, Exeter, Devon, EX4 4QE, UK *********************************************************************/ Touch wood, wood worm, ring worm, ring a ding ding a ling ling...

Dear all, sorry for this very basic question, but I did not find any good example yet. I would like to set up a variable that can be recall later to substitute a part of a file name. As example: var_filename = as.name("aaa") jpeg("var_filename.jpg") plot() dev.off() It would be very useful in order to avoid to change manually many strings. I guess it is possible, but I did

Hi, I''ve had several people ask me about a comment I made in a previous post; <quote> Dan, firstly, if you haven''t touched the compromised system much, do a "dd" across the raw disk and grep it for log fragments. I have seen vital erased logs recovered this way before! </quote> I shall try and explain a bit more! If an attacker erases, or truncates a