similar to: References of R in use

Displaying 20 results from an estimated 600 matches similar to: "References of R in use"

2002 Jan 03
2
Different behaviour of data()
Dear List, I frequently use the data() function to load csv files (with separator ";") into R session, typically data(myfile) loads myfile.csv from my working/data directory into R. Now, in 1.4.0 version, everything works as expected, but with one difference: The values readed in older versions in "num" mode are now readed as "int" mode, converting the values
2002 Jul 11
1
How to get relevant dimnames from apply() ?
Hello, in order to vectorize task (of plotting barplots), I use, as probably all R-folks, function apply() instead of for() loop. <R> testarr<-matrix(1:30, nrow=5) rownames(testarr)<-letters[1:5] colnames(testarr)<-LETTERS[1:6] apply(testarr,1,function(x) {x11(); barplot(x)}) #the funcion used is actually more compex, but it doesn't matter </R> Now, how I can propagate
2001 Jul 24
2
segmentation fault
I'm experiencing segmentation faults from time to time that abruptely end my R sesion. In such cases, is there any way to recover the work done? (i.e., is there any temporal file that I could use?) Thanks Agus Dr. Agustin Lobo Instituto de Ciencias de la Tierra (CSIC) Lluis Sole Sabaris s/n 08028 Barcelona SPAIN tel 34 93409 5410 fax 34 93411 0012 alobo at ija.csic.es
2001 Nov 08
1
Generalized Lambda
Anyone know of a package for numerically estimating lambda(3) and lambda(4) using location, position, skew and kurtosis estimates. I have a distribution and would like to use the gld package to do some simulations of the distribution, but need the lambda estimates to feed into gld. I have a program in Maple, which I may convert to C code for use in R, but before moving down that road I
2001 Jun 29
1
New post to data() function does not load a csv file in 1.3.0 (SOLVED)- a search problem?
Dear List, I have found that moving the csv file to [working directory]\data directory solves my "problem", the file was loaded correctly. But I thought that R serches in all packages\data AND the [workdir]\data dirs, as mentioned in help. >?data Is this as problem or am I missing something important? (the latter is more probable :), but then why the behaviour is different from
2001 May 30
3
Transformation of dissimilarity or distance matrix
Dear List, is there an elegant (or even not elegant) way how to transform dissimilarity or distance matrix A (or, in general, arbitrary symmetrical matrix) by transposition of rows and columns into a form closest to "block diagonal" matrix B? The matrix A is adjusted the following way A[A<epsilon] <-0 #(epsilon is given "small" number) B: (in its ideal form)
2001 Aug 03
2
Math symbols in email - not completely OT
What is the generally accepted way to put certain math symbols into plain text email? For example, how does one convey the "is exactly equal to", "is approximately equal to", and "delta" symbols in a standard text-based (e.g. Courier) font? Dr. Marc R. Feldesman email: feldesmanm at pdx.edu email: feldesman at attglobal.net fax: 503-725-3905
2001 Oct 22
2
OT: compare several graphs
Hi all, this is OT, but maybe someone can give me a clue. I've got data from eye tracker experiments (750 data points). These figures show how the data lock like |** * ***** |*** ****** | ** **** | * * | | * * | | * |-------------- |--------------- Y axes display velocity, x axes display time, * are the data points.
2002 Mar 13
3
plot
Hello! I use the version 1.4.0 for Windows. I have made boxplots but only half of the symbols (three letters each) show up on the X-axis? How t can one change their size or orientation so that all show up? I attach the pdf file to illustrate better the problem. Regards Martin Martin Lascoux Department of Conservation Biology and Genetics Evolutionary Biology Center Norbyv?gen 18D 75236
2002 Mar 20
4
A Very Trivial Question
Hi, This is a very trivial question, and I do not know why I cannot remember the answer at all! How does one get the entire system information (which OS, R version....etc) using an R command? Thanks, Kevin ------------------------------------------------------------------------------ Ko-Kang Kevin Wang Postgraduate PGDipSci Student Department of Statistics University of Auckland New Zealand
2002 Jul 22
3
Vector Manipulation
Greetings, I wonder if someone could point me towards a more elegent solution than what I"ve kluged together. I have a vector "samp1" of 296 integers. They are sorted in ascending order and the numbers range from 177 to 228,953. I'd like to specify N non-overlapping intervals covering the range from 0 to 229,354 and then for each range, count the number of integers from samp1
2002 Nov 05
5
LaTeX Output?
Hello all, Does anyone know of an R proc to export matrices or data frames (preferably with row and column names) directly into LaTeX table output? Many thanks, Dan daniel_ho at harvard.edu -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or
2001 Jul 12
0
Re: large survey data
> > Is there a way to import the data column by column? I have to analyze > > the whole data, but only two variables at a time. > ..... >If you are on a unix box, and you have a tab delimited file, 'cut' will >easily cut out fields from the file. To automate it, use a shell program >to produce all the pairs you want. That is a 1980's solution but it should
2001 Nov 12
3
'subscript out of bounds' in matrices
Dear list Having read through all the archives of the mailing lists, I've had no luck finding the answer to my problem. I am running a for(i in 1:n) loop and am creating a matrix, p, for each of the n observations. This matrix p is a 2x1 matrix. I am then doing the following: diagp<-diag(c(p[1,1],p[2,1])) to create a matrix with the elements of P on the diagonal (i.e. a 4x4 matrix).
2001 Nov 16
6
case conversion and/or string comparison
This is no doubt trivial but after searching the help files and the web, I cannot seem to find it. 1) How do I convert 'hgt' into 'HGT' in R? 2) How should I have used the help facilities to find this? At the end of the day, all I want to do is case insensitive string matching... i.e. 'if ("HGT" == 'hgt') print('this should be true')' I tried
2002 Jul 30
4
chisq.test, basic question
The cells are interpreted as counts, so by scaling you're analyzing a different experiment (one with fewer observations). So the chi-squared value will change (the terms (O-E)^2/E in the statistic scale linearly ignoring rounding and "Yates' continuity correction"). The chisq.test on the original data is a test of association. Conventionally you decide ahead of time on a
2002 Jan 27
1
DBM databases for R?
Hello! Can I use DBM databases (as they are used in Perl) for the import of large datasets in R? Thanks in advance for your help, Petra Steiner - --------------------------------------------------- Petra Steiner Arbeitsbereich Linguistik Universitaet Muenster Huefferstrasse 27 48149 Muenster
2002 Jan 23
1
Posthoc tests for ANOVA
Dear List, are there post-hoc tests like Scheffe, LSD, etc. available after ANOVA test is performed with significant F-statistic? I have tried help.search("Scheffe"), but "No documentation found" (and I have most of packages installed). Probably there are such tests in R, and I am just searching badly... My second question is: Which test/method I should use for ANOVA-like
2003 Apr 15
1
References of R in use (SHORT SUMMARY)
Dear R-list, about one month back I posted here a question/idea that it would be nice to have some list of references of R in use plus some other "marketing" arguments for R to promote it. Thanks for all your responses. I was given useful responses from Armin Roehrl, Jim Lemon, Edith Hodgen, Ko-Kang Kevin Wang, Charles Berry, Martin Maechler, Spencer Graves, Paul Gilbert, Adelchi
2006 Oct 04
0
new package proptest
Dear R users, The package proptest (http://www.davidkraus.net/proptest/) has been recently released to CRAN. The package provides functions for testing the proportional hazards assumption in the Cox model for right censored survival data. Two types of tests for identifying nonproportional covariates are implemented: * data-driven Neyman type smooth tests (using both nested and all-subsets