Hi, According to daisy function from cluster documentation, it can compute dissimilarity when NA (missing) value(s) is present. http://stat.ethz.ch/R-manual/R-devel/library/cluster/html/daisy.html But why when I tried this code library(cluster) x <- c(1.115,NA,NA,0.971,NA) y <- c(NA,1.006,NA,NA,0.645) df <- as.data.frame(rbind(x,y)) daisy(df,metric="gower") It gave this message: Dissimilarities : x y NA Metric : mixed ; Types = I, I, I, I, I Number of objects : 2 Warning messages: 1: In min(x) : no non-missing arguments to min; returning Inf 2: In max(x) : no non-missing arguments to max; returning -Inf I welcome other alternative than gower. I expect the dissimilarity output gives a non-NA value e.g. 0. What's the right way to do it? G.V.

Hi Gundala, This question isn't about a Bioconductor package, so should be asked on R-help instead. Best, Jim On Sunday, December 08, 2013 2:11:12 AM, Gundala Viswanath wrote: > Hi, > > > According to daisy function from cluster documentation, it can compute > dissimilarity when NA (missing) value(s) is present. > > http://stat.ethz.ch/R-manual/R-devel/library/cluster/html/daisy.html > > But why when I tried this code > > library(cluster) > x <- c(1.115,NA,NA,0.971,NA) > y <- c(NA,1.006,NA,NA,0.645) > df <- as.data.frame(rbind(x,y)) > daisy(df,metric="gower") > > It gave this message: > > Dissimilarities : > x > y NA > > Metric : mixed ; Types = I, I, I, I, I > Number of objects : 2 > Warning messages: > 1: In min(x) : no non-missing arguments to min; returning Inf > 2: In max(x) : no non-missing arguments to max; returning -Inf > > I welcome other alternative than gower. > > I expect the dissimilarity output gives a non-NA value e.g. 0. What's > the right way to do it? > > G.V. > > _______________________________________________ > 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 -- James W. MacDonald, M.S. Biostatistician University of Washington Environmental and Occupational Health Sciences 4225 Roosevelt Way NE, # 100 Seattle WA 98105-6099