Barplot Bar Chart Adjustment __ Bar chart legend

Bar chart for fine tuning

>counts<-table (arthritis$improved)

>barplot (counts,main= "Treatment outcome", horiz=true,cex.names = 1,names.arg = C ("No", "some", "Marked"), Xlim=c ( 0,50), Col=c ("Red", "green", "yellow"), Legend=c ("No", "some", "Marked"), args.legend=c (25,28,X.INTERSP = 0.5,Y.INTERSP = 0.7,text.width=6,cex=1))

Added the legend, and shows how to adjust the length of the axis of the legend, as well as the size and position of the label, the larger the X.INTERSP,Y.INTERSP, the larger the size of its legend, CeX, adjust the size of the entire legend, can be seen as the size of the text inside. Note that both text and the size of the entire legend should be placed in the args.legend adjustment. This example can be seen as the "R Language Combat" p113 page of the improved version.