Calculating percentiles for multiple dates

Sorry, I've sent this only to the op, forgetting to cc the list.

Hello,

Percentile of what? You probably have a dataset with dates and a 
variable, right? What is the nature of that variable?
Post a data example:

dput(head(myData), 20)  # or 30

Copy the output of that command and paste it in  a post. Tip: it starts 
with structure(...etc ...
Paste it all, for us to see what your data looks like.

Hope this helps,

Rui Barradas

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.



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