search for: mysub

....edu/~stram These notes were written by J.R.M. Hosking. Using Fortran routines from R with CVF 1. Take a working Fortran subroutine, and put its name in an ATTRIBUTES DLLEXPORT directive to ensure that the routine name is exported from the DLL that will be built. Example: SUBROUTINE MYSUB(X,N,XMEAN) CDEC$ ATTRIBUTES DLLEXPORT :: MYSUB IMPLICIT DOUBLE PRECISION (A-H,O-Z) DOUBLE PRECISION X(N) XMEAN=0D0 DO 10 J=1,N XMEAN=XMEAN+X(J) 10 CONTINUE XMEAN=XMEAN/N RETURN END 2. Compile and link the routine using the CVF options /assume:underscore an...

...example data dat <- data.frame(matrix(rnorm(15),ncol=5)) colnames(dat) <- c("ab","cd","ef","gh","ij") If I want to get a subset of the data for the middle 3 columns, and I know the names of the start column and the end column, I can do this: mysub <- subset(dat,select=c(cd:gh)) If I wanted to do this just on the column names, without subsetting the data, how could I do this? mynames <- colnames(dat); #mynames #[1] "ab" "cd" "ef" "gh" "ij" Is there an easy way to create the vector c(...

I am trying to calculate monthly means by year of phosphates and nitrates from a multi year data set. Can anybody help me out with the most effective way to do this? My data looks like this: Collection_Date                   Test.Name              Value 2000-01-24 17:00:00            Phosphate               0.108 2000-01-24 17:00:00            Nitrate                     0.037 2001-11-12

Hello, I am trying to make a heatmap in R and am having some trouble. I am very new to the world of R, but have been told that what I am trying to do should be possible. I want to make a heat map that looks like a gene expression heatmap (see http://en.wikipedia.org/wiki/Heat_map). I have 43 samples and 900 genes (yes I know this will be a huge map). I also have copy numbers associated with

Dear list, I have imported a spss data file in R, where a comma is used to separate the decimal numbers, e.g. 3,567 instead of 3.567 as in R. How can I replace the comma with a dot for all values in the data frame >kk a b c d e f 1 ,0925199910320613 82523 8 ,855 ,803 ,69 2 ,278314161923372 91657 26 1,285 1,032 ,823 3

Hi, all I didn't get any response from swig for my question. see if I can get some help here Thanks ---------- Forwarded message ---------- From: charlie <charlie.xia.fdu@gmail.com> Date: Tue, Nov 4, 2008 at 1:55 PM Subject: SWIG with R and C++ STL To: swig-user@lists.sourceforge.net Hi all, I am new to SWIG. I encountered some problem when I try to SWIG to R some C++ modules. Here

Dear Forum, I have a data frame as  mydat = data.frame(basel_asset_class = c(2, 8, 8 ,8), defa_frequency = c(0.15, 0.07, 0.03, 0.001)) > mydat   basel_asset_class defa_frequency 1                 2          0.150 2                 8          0.070 3                 8          0.030 4                 8          0.001 I need to get the subset of this data.frame where no of records for the

Dear Forum, I have a data frame as  mydat = data.frame(basel_asset_class = c(2, 8, 8 ,8), defa_frequency = c(0.15, 0.07, 0.03, 0.001)) > mydat   basel_asset_class defa_frequency 1                 2          0.150 2                 8          0.070 3                 8          0.030 4                 8          0.001 I need to get the subset of this data.frame where no of records for the