R adding infrequent date 'events' to a time series plot

Posted by flyingcrab on Stack Overflow See other posts from Stack Overflow or by flyingcrab
Published on 2010-06-09T15:19:04Z Indexed on 2010/06/09 15:22 UTC
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Hi,

I am just starting on R - and have hit a bit of a deadlock with some time series data.

I have a time series (date and value) in 'zoo' format, that I want to annotate with a cross when an event occurs. The events are irregular and in a csv format (just the dates, sometimes repeated).

I've managed to read in the dates etc into a format that R accepts - but i cant seem to get a means to chart the main time series with the secondary events annotated on top?

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R adding infrequent date 'events' to a time series plot - Developer IT

R adding infrequent date 'events' to a time series plot

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