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4 results for “from:Wollenberg, Kurt R”

Vector multiplication wrap-around
Wollenberg, Kurt R · Nov 9, 2004 · r-help

Greetings: In a function I'm trying to write I am multiplying each row in a matrix by a vector. When the vector extends beyond the end of the matrix I need to have the multiplication wrap around (continue with...

Calculating a table of symbol frequencies
Wollenberg, Kurt R · Jan 6, 2005 · r-help

Hello all: I have a protein sequence alignment in a data frame (align1, 72 x 236), where each row is a protein and each column a site in the alignment. AA is vector of amino acid symbols plus "-" (gap). I...

Two problems building a package
Wollenberg, Kurt R · Mar 1, 2005 · r-help

Hello all: I have written a few R scripts and am trying to turn them into a package for submission to CRAN. All of these scripts are R code only, no C or C++ or anything else. I'm working...

Calculating symbol (letter) frequencies
Wollenberg, Kurt R · Jan 3, 2005 · r-help

Hello: I am attempting to use R to analyze amino acid frequencies in aligned protein sequences and need some help. So far, I have imported my sequence alignment into a data frame (lets call it "alignment") with each site in...

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