Create a binary indicator matrix in R

Posted by Brian Vanover on Stack Overflow See other posts from Stack Overflow or by Brian Vanover
Published on 2013-07-02T17:00:33Z Indexed on 2013/07/02 17:05 UTC
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I have a list of data indicating attendance to conferences like this:

Event Participant
ConferenceA John
ConferenceA Joe
ConferenceA Mary
ConferenceB John
ConferenceB Ted
ConferenceC Jessica

I would like to create a binary indicator attendance matrix of the following format:

Event John Joe Mary Ted Jessica
ConferenceA 1 1 1 0 0
ConferenceB 1 0 0 1 0
ConferenceC 0 0 0 0 1

Is there a way to do this in R? Sorry for the poor formatting.

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Create a binary indicator matrix in R - Developer IT

Create a binary indicator matrix in R

r

matrix

recommendation

collaborative-filtering

dummy-data

Related posts about r

Related posts about matrix

Find the "largest" dense sub matrix in a large sparse matrix

How does a template class inherit another template class?

iPhone OpenGL ES: How do I use gravity vector to correctly transform scene for augmented reality

How do I use the gravity vector to correctly transform scene for augmented reality?

C++ templates - matrix class

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