An Introduction to R Graphics - Part II ggplot2
An Introduction to R Graphics
Part II--ggplot2
Dan Hall, Director of the SCC
Table of Contents
Introduction ggplot2 Basics Aesthetics geom Functions Scales Coordinate Systems Facetting Themes Examples Resources for Graphics in R
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Introduction
Having powerful and flexible systems for graphics is one of R's biggest strengths.
? Base Graphics. Contained in the graphics package distributed in base R.
? Grid graphics. grid package is distributed in base R. ? Contains low-level graphics functions. ? Useful as a platform for developing and implementing higher-level graphics functions and systems.
? Lattice Graphics. lattice package also distributed in base R. ? Mimics and extends trellis graphics from S and S-PLUS. ? Characteristic feature is plots with multiple panels. ? Built on grid.
? ggplot2 Graphics. ggplot2 package available on CRAN. ? Based on Leland Wilkinson's ideas articulated in his book, The Grammar of Graphics. ? Sophisticated and powerful system. Not too hard to learn. ? Built on grid.
3/29
Introduction
Having powerful and flexible systems for graphics is one of R's biggest strengths.
? Base Graphics. Contained in the graphics package distributed in base R.
? Grid graphics. grid package is distributed in base R. ? Contains low-level graphics functions. ? Useful as a platform for developing and implementing higher-level graphics functions and systems.
? Lattice Graphics. lattice package also distributed in base R. ? Mimics and extends trellis graphics from S and S-PLUS. ? Characteristic feature is plots with multiple panels. ? Built on grid.
? ggplot2 Graphics. ggplot2 package available on CRAN. ? Based on Leland Wilkinson's ideas articulated in his book, The Grammar of Graphics. ? Sophisticated and powerful system. Not too hard to learn. ? Built on grid.
3/29
Introduction
Having powerful and flexible systems for graphics is one of R's biggest strengths.
? Base Graphics. Contained in the graphics package distributed in base R.
? Grid graphics. grid package is distributed in base R. ? Contains low-level graphics functions. ? Useful as a platform for developing and implementing higher-level graphics functions and systems.
? Lattice Graphics. lattice package also distributed in base R. ? Mimics and extends trellis graphics from S and S-PLUS. ? Characteristic feature is plots with multiple panels. ? Built on grid.
? ggplot2 Graphics. ggplot2 package available on CRAN. ? Based on Leland Wilkinson's ideas articulated in his book, The Grammar of Graphics. ? Sophisticated and powerful system. Not too hard to learn. ? Built on grid.
3/29
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