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 
data.s1 
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@metoffice.gov.uk 

 

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