[R] Is there an equivalent * operator?

From: Williams, Robin <robin.williams_at_metoffice.gov.uk>
Date: Thu, 24 Jul 2008 11:30:37 +0100

Hi all,
Is there an equivalent to the general * operator in R, where * can represent any character?
  I have a dataset, one column being date, date ranging between April-September, 97-06. I would like to be able to acquire the data for a specific month, say September, so that I can take average temperatures for the month, etc. I thought I would be able to do something like data.s1 <- subset(data,date=="**-Sep-**") data.s1
but when I do
I get "0 rows or 0-length row.names".
  Any idea of a simple way I can perform this task? All dates are in the form xx-xxx-xx, EG 30-Sep-06. Thanks for any assistance.  

Robin Williams
Met Office summer intern - Health Forecasting robin.williams_at_metoffice.gov.uk  

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