[R] Calculating percentiles for multiple dates
ruipbarradas at sapo.pt
Tue Jul 31 00:43:21 CEST 2012
Sorry for my earlier post, they show the problem of not providing
context. Fortunatelly, arun's post made me realize there was some data
posted somwhere after all. So, try this:
aggregate(DEPTH ~ LOG_DATE, data = dat1, quantile, probs = c(0.025, 0.975))
LOG_DATE DEPTH.2.5% DEPTH.97.5%
1 37757 0.635225 5.042800
2 37758 0.299250 2.870000
Hope this helps,
Em 30-07-2012 17:35, guzzom escreveu:
> I was hoping to calculate the percentile for each date. So group all of one
> date together, calculating the value of the 2.5 and 97.5 percentile.
> View this message in context: http://r.789695.n4.nabble.com/Calculating-percentiles-for-multiple-dates-tp4638183p4638378.html
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