Using this code to generate MA-Plot. What is the meaning of Median and IQR? library(affy) if (require(affydata)) { data(Dilution) } y <- (exprs(Dilution)[, c("20B", "10A")]) x11() ma.plot( rowMeans(log2(y)), log2(y[, 1])-log2(y[, 2]), cex=1 ) - G.V. [[alternative HTML version deleted]]

On Wed, Jan 30, 2013 at 8:56 AM, Gundala Viswanath <gundalav at="" gmail.com=""> wrote: > Using this code to generate MA-Plot. > What is the meaning of Median and IQR? Hi, Gundala. Are you asking about the median and IQR in the code, because I do not see one? If you are asking about the definition of median and interquartile range (IQR), you would probably be well-served by doing a little bit of reading on these two quantities. Sean > library(affy) > > if (require(affydata)) > { > data(Dilution) > } > > y <- (exprs(Dilution)[, c("20B", "10A")]) > > x11() > > ma.plot( rowMeans(log2(y)), log2(y[, 1])-log2(y[, 2]), cex=1 ) > > - G.V. > > [[alternative HTML version deleted]] > > _______________________________________________ > Bioconductor mailing list > Bioconductor at r-project.org > https://stat.ethz.ch/mailman/listinfo/bioconductor > Search the archives: http://news.gmane.org/gmane.science.biology.informatics.conductor