Couple of problems:
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2) If this is not homework, why the reluctance to rely on tested code?
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Sent from my phone. Please excuse my brevity.
helpwperl <ssab...@jhu.edu> wrote:
>I'm trying to code quantile normalization without using any fancy
>functions
>(e.g., normalizeBetweenArrays(), normalize.quantities(), etc.). I'm
>having a
>hard time trying to re-order the columns of my means matrix to match
>the
>original unsorted matrix. I assume I will have to somehow utilize
>order() or
>rank() but I'm having a hard time doing so. I'm essentially attempting
>to
>mirror what is being performed on the third slide of page seven of this
>(http://www.biostat.jhsph.edu/~ririzarr/Teaching/688/normalization.pdf)
>lecture. I've posted below my current code:
>
>samp <- cbind(samp1, samp2, samp3, samp4)
>colnames(samp) <- c("samp1", "samp2", "samp3", "samp4")
>
>samp.sorted <- apply(samp, 2, sort)
>
>row.means <- rowMeans(samp.sorted, na.rm = FALSE)
>row.means <- as.matrix(row.means)
>row.means <- cbind(row.means, row.means, row.means, row.means)
>
>Any help would be greatly appreciated.
>
>
>
>--
>View this message in context:
>http://r.789695.n4.nabble.com/Quick-help-needed-in-coding-quantile-normalization-tp4679072.html
>Sent from the R help mailing list archive at Nabble.com.
>
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>and provide commented, minimal, self-contained, reproducible code.
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