[R] plot 2 bars

Roslina Zakaria zroslina at yahoo.com
Wed May 14 04:42:15 CEST 2008


 Hi r-expert,
How do I plot this 2 histogram side by side so that it is easy to compare for bin range 0,5,10,15, 20 and more
    obs_data  pre_gam
[1,]     2695 2677.284
[2,]       43   61.101
[3,]       20   29.016
[4,]       14   11.160
[5,]       18   11.439
Thanks in advance.






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