# How do I show legend in R?

## How do I show legend in R?

R legend function

1. x and y : the x and y co-ordinates to be used to position the legend.
2. legend : the text of the legend.
3. fill : colors to use for filling the boxes beside the legend text.
4. col : colors of lines and points beside the legend text.
5. bg : the background color for the legend box.

What does legend function do in R?

legend() function in R Language is used to add legends to an existing Plot. A legend is defined as an area of the graph plot describing each of the parts of the plot. The legend plot is used to show statistical data in graphical form. bg: It defines background color for the legend box.

### How do I add a legend to a base in R?

This post explains how to add a legend to a chart made with base R, using the legend() function….Add a legend to a base R chart

1. legend : names to display.
2. bty : type of box around the legend.
3. horiz : legend in column or in row.
4. col : symbol color.
5. pch : symbol type.
6. pt.

What does Cex in R mean?

option. description. cex. number indicating the amount by which plotting text and symbols should be scaled relative to the default. 1=default, 1.5 is 50% larger, 0.5 is 50% smaller, etc.

#### How do I fix legend size in R?

Change legend size In order to change the legend size in R you can make use of the cex argument. Values bigger than 1 will lead to a bigger legend and smaller to smaller legends than the default.

How do I reduce the size of a plot in R?

How to change font size of text and axes on R plots. To change the font size of text elements, use cex (short for character expansion ratio). The default value is 1. To reduce the text size, use a cex value of less than 1; to increase the text size, use a cex value greater than 1.

## Which is Chapter 10 Legends of R graphics?

Chapter 10 Legends | R Graphics Cookbook, 2nd edition This cookbook contains more than 150 recipes to help scientists, engineers, programmers, and data analysts generate high-quality graphs quickly—without having to comb through all the details of R’s graphing systems.

Where to put legend in base are graphic?

The “topright” argument specifies that the legend should be in the upper right corner of the graph. The inset argument allows to change the position of the legend (i.e. a bit more to the right).

### How to add legend to a bar plot?

Note that if you need to add a legend to a bar plot, pie chart or box plot you can use the fill argument instead of setting lines. If your plot have shading lines you can also add them to the legend with the density argument and modify the angle on the lines with the angle argument of the function.

How to add legends to plots in rdocumentation?

Attribute arguments such as col, pch, lty, etc, are recycled if necessary: merge is not. Set entries of lty to 0 or set entries of lwd to NA to suppress lines in corresponding legend entries; set pch values to NA to suppress points.