I am trying to create an MvA plot using smoothScatter that has a lowess curve fit superimposed. I can't seem to find documentation on smoothScatter that will allow this. Currently I have: smoothScatter(x,y, main = "My MvA Plot") Can a lowess curve fit be added as an argument to smoothScatter? If not, is there a way to add it externally to the smoothScatter function? [[alternative HTML version deleted]]

Hi Andrew, Another option is to use the package "hexbin" ---------- library(hexbin) ## a vector of your M-values m.ii ## a vector of your A-values a.ii temp.plot <- list(M=m.ii,A=a.ii) hb <- plotMAhex(temp.plot,newpage=TRUE,main="Main Title Goes Here",legend=0) hexVP.abline(hb$plot.vp, h=0, col="black") hexMA.loess(hb,span=.75) # if a Median Line is desired hexVP.abline(hb$plot.vp,v=median(means.log2), col="blue") --------- Have a great day, S. Keith Anderson, M.S. Statistician/Assistant Supervisor Cancer Center Statistics Division of Biomedical Statistics and Informatics Phone: 507-266-9059 Fax: 507-266-2477 E-mail: anderson.s at mayo.edu _______________________________ Mayo Clinic 200 First Street S.W. Rochester, MN 55905 www.mayoclinic.org -----Original Message----- From: bioconductor-bounces@stat.math.ethz.ch [mailto:bioconductor-bounces at stat.math.ethz.ch] On Behalf Of Andrew Einhorn Sent: Monday, August 30, 2010 10:03 AM To: bioconductor at stat.math.ethz.ch Subject: [BioC] superimpose lowess on smoothScatter I am trying to create an MvA plot using smoothScatter that has a lowess curve fit superimposed. I can't seem to find documentation on smoothScatter that will allow this. Currently I have: smoothScatter(x,y, main = "My MvA Plot") Can a lowess curve fit be added as an argument to smoothScatter? If not, is there a way to add it externally to the smoothScatter function? [[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