[R] How to group a count
Jacqueline.Spilak at EC.gc.ca
Tue May 15 23:50:07 CEST 2007
Here is my data. I tried table but it doesn't do what I want it to do
when it graphs. I want a count of the types (R for one graph and A for
another) by hour grouped by year. Hope that helps.
From: Deepayan Sarkar [mailto:deepayan.sarkar at gmail.com]
Sent: May 15, 2007 3:46 PM
To: Spilak,Jacqueline [Edm]
Cc: r-help at stat.math.ethz.ch
Subject: Re: [R] How to group a count
On 5/15/07, Spilak,Jacqueline [Edm] <Jacqueline.Spilak at ec.gc.ca> wrote:
> Hello R users
> I have a dataset that has different types of records with different
> dates and times pertaining to each. I would like to have a bar graph
> of a count of the types(ie. The number of types) of recods by hour
> grouped by year. So the count of the types would be the y axis, the
> hour on the x axis and then grouped by year for easy comparison. I
> think that I have to use barchart however I don't know how to get
> barchart to do a count and not graph values.
I think you want to use table or xtabs to get a frequency table, and use
barchart on the result. Hard to say more without an example.
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