Create a table of Quantiles in R for multiple Subsets of Data

Posted by user1489719 on Stack Overflow See other posts from Stack Overflow or by user1489719
Published on 2012-07-06T21:12:32Z Indexed on 2012/07/06 21:15 UTC
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table

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index

I'm trying to create append a table of quantiles in R for multiple subsets of data.

Right now, I have a vector of ids (p_ids) in table DATA, which are not consecutive. For each value in p_ids, I am looking to list the quantile.

So far, I've tried variations of:

i <- 1 n <- 1

for (i in p_ids) { while(n <= nrow(data)) { quantiles[n] <- quantile(subset(alldata$variableA, alldata$variableB == i),probs = c(0,1,2,3)/3) n <- n + 1 } }

I know my issue lies somewhere in the index, but I can't seem to get where the index should go. Suggestions?

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