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Wednesday, 3 April 2013

The Purpose of Ecology

A Quick (yet su?ciently complete) Introduction to R
Derek Sonderegger September 17, 2012

1 in that respect are several introductions to R. This is yet another one of them. Derek Sonderegger discussion section of Mathematics and Statistics Northern Arizona University

Contents
1 What is R? 1.1 1.2 R as a simple calculator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 5 6 7 7 8 9 9 10 11 12 12 13 15 15 17 19 19 20 21 23 24 26

2 data Types: vectors 2.1 2.2 2.3 2.4 2.5 2.6 Vector Creation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Accessing Vector Elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Scalar Functions Applied to Vectors . . . . . . . . . . . . . . . . . . . . . . . . . . Vector Algebra . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . usually Used Vector Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . Numerical, Categorical, and Logical Vectors . . . . . . . . . . . . . . . . . . . . . .

3 Data Types: Matrices and Data Frames 3.1 3.2 Matrices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Data Frames . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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4 Using R for statistical tables 4.1 4.2 4.3 4.4 d-function() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . p-function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . q-function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . r-function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5 Basic graphing using ggplot2 5.1 5.2 5.3 5.4 Simple Graphs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Color, Size, Shape, and other aesthetic attributes . . . . . . . . . . . . . . . . . ....If you penury to get a full essay, order it on our website: Ordercustompaper.com



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