I found arrow is too thin. I have one arrow image. I want to put it there. How can i import external image and merge with stacked bar plot. Regards -- View this message in context: http://r.789695.n4.nabble.com/How-to-add-marker-in-Stacked-bar-plot-tp4635946p4635955.html Sent from the R help mailing list archive at Nabble.com.