R Base Graphs

Previously, we described the essentials of R programming and provided quick start guides for importing data into R.

This chapter contains articles describring how to visualize data using R base graphs.

How this chapter is organized?

Creating and saving graphs

Creating graphs
Saving graphs
File formats for exporting plots

create and save plots

Read more: —> Creating and Saving Graphs in R.

Generic plot types in R

Read more: —> Generic plot types in R.

Scatter plots

R base scatter plot: plot()
Enhanced scatter plots: car::scatterplot()
3D scatter plots

Scatter plot matrices

R base scatter plot matrices: pairs()
Use the R package psych

Box plots

R base box plots: boxplot()
Box plot with the number of observations: gplots::boxplot2()

Strip Charts: 1-D scatter Plots

Read more —> Strip Charts: 1-D scatter Plots.

Bar plots

Basic bar plots
- Change group names
- Change color
- Change main title and axis labels
Stacked bar plots
Grouped bar plots

Line plots

R base functions: plot() and lines()
Basic line plots
Plots with multiple lines

Pie charts

Create basic pie charts: pie()
Create 3D pie charts: plotix::pie3D()

Histogram and density plots

Create histogram plots: hist()
Create density plots: density()

## [1] 48.96467 56.38715 60.42221 43.27151 57.14562 57.53028

Read more —> Histogram and Density Plots.

QQ-plots: Quantile-Quantile plots

Use qqPlot() [in car package]:

Read more —> QQ-plots: Quantile-Quantile plots.

Dot charts

R base function: dotchart()
Dot chart of one numeric vector
Dot chart of a matrix

Plot group means and confidence intervals

R base graphical parameters

Add and customize titles
Add legends
Add texts
Add straight lines
Add an axis to a plot
Change axis scale : minimum, maximum and log scale
Customize tick mark labels
Change plotting symbols
Change line types
Change colors

Read more —> R base graphical Parameters.

Infos

This analysis has been performed using R statistical software (ver. 3.2.4).

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