How to calculate the Shannon-Weaver diversity index

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How to calculate the Shannon-Weaver diversity
index
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H The Shannon-Weaver Diversity Index pi the
relative abundance of each group of
organisms But remember that the S-W index is
usually expressed as eH OR H' - ?(Ni/N) ln
(Ni/N)
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Like so
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Now we need natural logs (ln)
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Next multiply LN(Pi) by Pi
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Now add it up
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Now multiply by -1
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Now raise e to H
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Ta Da!
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In order to calculate SW for your other samples