[R] pattern search

Schmitt, Corinna Corinna.Schmitt at igb.fraunhofer.de
Wed Apr 4 16:49:10 CEST 2007

Dear R-experts,

I'm looking for an easy possibility for pattern search. I have got a
string and a special pattern. I would like to know if the pattern
appears in the string, if yes where does it appear (position) and the
number of appearance.  


Text = c("If the sun shines, no clouds should be seen in the sky!")
SearchPattern = c("the")
NumberOfAppearance = 0
NumberOfLetters = 0

--> NumberOfAppearance should be 2 in the end

How can I get the string length (=number of letters stored in Text)?

Has anyone a good idea?

Thanks, Corinna

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