Dear all: Recently, I am using "heatmap" function to perform 2-Dimension hierarchical clustering for gene expression profile. The number of gene and condition are 6370 and 994 respectively. However, I got the error massage after running the "heatmap" function. Please see below: > heatmap(int.dat, col=col.map) Error in match.fun(FUN) : evaluation is nested too deeply: infinite recursion? Error: evaluation is nested too deeply: infinite recursion? Would you please tell me how to deal with this problem? Thank you for the kind reply. Your truly, Shih-Te ------------------------------------------------ Shih-Te Yang, Ph.D. student Bioinformatics Research Center Institute of Biochemistry School of Life Science National Yang-Ming University Tel:+886-2-28267000*5666 Fax:+886-2-81461062 E-mail:g38903040@ym.edu.tw MyWeb: http://binfo.ym.edu.tw/styang/