

Dot plot with mean point and error bars.Functions: geom_line(), geom_step(), geom_path(), geom_errorbar().Change manually the appearance of lines.Change automatically the line types by groups.Change globally the appearance of lines.

#Grouped scatter plot ggplot2 download
If you want be highly effective, download our book: Guide to Create Beautiful Graphics in R This document provides R course material for producing different types of plots using ggplot2.

ggplot() function is more flexible and robust than qplot for building a plot piece by piece.qplot() stands for quick plot, which can be used to produce easily simple plots.There are two major functions in ggplot2 package: qplot() and ggplot() functions. Geometry defines the type of graphics ( histogram, box plot, line plot, density plot, dot plot, ….).It can also be used to control the color, the size or the shape of points, the height of bars, etc…. Aesthetics is used to indicate x and y variables.The principal components of every plot can be defined as follow: The concept behind ggplot2 divides plot into three different fundamental parts: Plot = data + Aesthetics + Geometry. Ggplot2 is a powerful and a flexible R package, implemented by Hadley Wickham, for producing elegant graphics.
