search for: grepfn

Displaying 4 results from an estimated 4 matches for "grepfn".

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2010 Aug 27
2
multivariate distributions
Hi, How can I generate data from multivariate gamma distribution & multivariate beta distribution? I only found command for multivariate normal only. Many thanks in advance :) Regards Rofizah [[alternative HTML version deleted]]
2010 Jul 12
2
[R-pkgs] New package "list" for analyzing list survey experiments
I know nothing about your package, but "list" is a terrible name for it, as "list" is also the name of a data type in R. -- Jeff
2011 Jul 21
0
add label attribute to objects?
...comment for a given object (for example, either on 'iris' or on 'iris$Species'). Using 'sos' I found some potential candidates. > require(sos) > xb <- findFn('label attribute') found 307 matches; retrieving 16 pages 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 > grepFn( 'label', xb) There is Hmisc::label, which seems to address my concern, but I cannot get it to work on data frames. Am I doing something wrong here? > require(Hmisc) > #works fine on vectors, but loses the label upon conversion > age <- c(21,65,43) > y <- 1:3 > labe...
2010 Jan 04
2
MLE optimization
Folks, I'm kind of newbie in R, but with some background in Matlab and VBA programming. Last month I was implementing a Maximum Likelihood Estimation in Matlab, but the algorithms didn't converge. So my academic advisor suggested using R. My problem is: estimate a mean reverting jump diffusion parameters. I've succeeded in deriving the likelihood function (which looks like a gaussian