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...ata<-read.table(file="#a file in my working directory", sep=",", header=T) #specifies a dataframe foram<-data.frame(emdata) #calculates actual dimensions in mm foram$actual_l<-foram$length/foram$magnification foram$actual_w<-foram$width/foram$magnification foram$actual_h<-foram$height/foram$magnification #takes logs of all dimensions foram$logl<-log10(foram$actual_l) foram$logw<-log10(foram$actual_w) foram$logh<-log10(foram$actual_h) #Generates scatterplot plot(foram$stage, foram$logl, ylab="log max size", xlab="stage", cex=....