Please let me know if this is or is not the right place to ask these
types of questions.

Warning: I am new to R by two days.

I have a simple dataset.
I have loaded the dataset successfully using the following code:

Filepath=(C:\temp\\pilot\dataset1.txt")
Pilot=read.table(filepath, header=TRUE)

Dataset1.txt is delimited and looks like this:

Date	illness	count
2006/01/01	derm	17
2006/01/01	derm 	35
2006/01/02	derm	24
2006/01/02	derm	80
.
.
.
Total records like this approximately 18,000

I would like to use the aggregate function to sum the count by similar
date and illness, so it should look like this after the aggregate

2006/01/01	derm	52
2006/01/02	derm	104
.
.
.

And, the illness changes to fever with the same pattern. I would like to
aggregate the same illnesses by date in the same fashion.

A nudge in the right direction would be appreciated.

Thanks.

Ken Hall 
Computer Scientist 
Division of Healthcare Information (DHI) (proposed)
Public Health Surveillance Program Office (proposed)
Office of Surveillance, Epidemiology, & Laboratory Services (OSELS)
(proposed)
Centers for Disease Control & Prevention (CDC)
kha6@cdc.gov 
Mobile: 404-993-3311 
Office: 404-498-6839



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