graph bar of counts vs total data

[Ken Mwai]

Hi All;
I am using R 3.0.2 on a 64bit machine
I have a data set of with data from 1989-2011 with date, age in months, serialno and admission ward

I want to do a graph of the total data (serialno) vs date over the years.
I am trying to use

ggplot(dta, aes(nagem , fill=admin_ward)) + geom_bar() +
  facet_grid(. ~ yr, scales = "free",margins=F) + geom_histogram(binwidth=300)

nagem - age in months
admin_ward - admision ward
yr - year

how can i include the serialno to be part of the graph to achieve a plot as shown below in ggplot2

[Doug Mitarotonda]

It would be easiest to help if you provided a reproducible example, but in general you will want to use position = "dodge", which is documented here: http://docs.ggplot2.org/0.9.3.1/position_dodge.html

Also, why are you using geom_bar and geom_histogram?

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[Ken Mwai]

Thanks Doug;
I am using geombar() to facilitate addition of layers and geomhistogram() for controling the binwidth of each year

Kind Regards

Ken Mwai
www.keniajin.com
"Stats don't lie and technology is a lyfstyle live it"

[Doug Mitarotonda]

My guess is that you don't need both if you do something like geom_bar(position = "dodge").