character position

If it always occurs after 'are', this will work:
x <-  'There are 20 species in this grid'
y <- sub(".*are (\\d+).*", "\\1", x, perl=TRUE)
y
[1] "20"

Hi,

I'm not being able to capture a position of a 'string' in a character
string.

In this example: 'There are 20 species in this grid'

I would like to capture the string (number) after 'are' and before
'species'. Consider they do not change. I wouldn't like to use substr
because stop position may change.

Thanks

Paulo

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Jim Holtman
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What is the problem that you are trying to solve?

character position

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