Message-ID: <1384638589297-4680579.post@n4.nabble.com>
Date: 2013-11-16T21:49:49Z
From: SCRIPTHAM
Subject: Calculate Range
Hi
My R version is the current version as at 15 Nov 2013.
I have tried to calculate range using tapply() with FUN=range.
tapply() returns two fields, the ID field and a field of two text items one
is the maximum and the other is the minimum.
I take as the difference max - min, does R use a different term for range in
tapply?
I have also tried
aggregate() with Fun=range, with Fun=min and FUN=max
and they also gave problems.
What is the best route to calculate ranges for groups within a data frame.
Thanks.
Scriptham.
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