I am using the affy package to plot a histogram of raw data from an affymetrix dataset. Data <- ReadAffy() hist(Data[,1:4]) The histogram plots fine but I'd like to attach a legend to the plot, or at least label the plot-lines somehow. At present there is no way to discern which of the four lines corresponds to which sample. [[alternative HTML version deleted]]

Hi Andrew, On 8/18/2010 9:14 AM, Andrew Einhorn wrote: > I am using the affy package to plot a histogram of raw data from an > affymetrix dataset. > > Data<- ReadAffy() > hist(Data[,1:4]) You need to look at ?legend. And you need to control the line type and color of the samples in your call to hist(). An example: > library(affydata) > data(Dilution) > hist(Dilution, col=1:4, lty=1) > legend("topright", inset = 0.01, legend = row.names(pData(Dilution)), col=1:4,lty=1) Best, Jim > > The histogram plots fine but I'd like to attach a legend to the plot, or at > least label the plot-lines somehow. At present there is no way to discern > which of the four lines corresponds to which sample. > > [[alternative HTML version deleted]] > > _______________________________________________ > Bioconductor mailing list > Bioconductor at stat.math.ethz.ch > https://stat.ethz.ch/mailman/listinfo/bioconductor > Search the archives: http://news.gmane.org/gmane.science.biology.informatics.conductor -- James W. MacDonald, M.S. Biostatistician Douglas Lab University of Michigan Department of Human Genetics 5912 Buhl 1241 E. Catherine St. Ann Arbor MI 48109-5618 734-615-7826 ********************************************************** Electronic Mail is not secure, may not be read every day, and should not be used for urgent or sensitive issues