Table of Contents
How do I change the size of a legend in Barplot R?
To change the legend size of the plot, the user needs to use the cex argument of the legend function and specify its value with the user requirement, the values of cex greater than 1 will increase the legend size in the plot and the value of cex less than 1 will decrease the size of the legend in the plot.
How do I add a legend to a Barplot in R?
In R you can add a legend to any plot using the legend() command. You can also use the legend = TRUE parameter in the barplot() command. The barplot() command is the only general plot type that has a legend parameter (the others need a separate legend).
How do you change the legend in R?
Key R functions to change ggplot legends:
- p + labs(). Change legend title.
- p + theme(…). Change legend theme: background color, legend box border, font size and color.
- p + scale_x_discrete(limits = c(“2”, “0.5”, “1”)).
- p + scale_fill_discrete(name = “Dose”, labels = c(“A”, “B”, “C”)).
- guides().
How do I add a data label to a Barplot in R?
To add labels on top of each bar in Barplot in R we use the geom_text() function of the ggplot2 package. Parameters: value: value field of which labels have to display. nudge_y: distance shift in the vertical direction for the label.
How do I change the legend in ggplot2?
How do I make text bigger in R markdown?
To change the font size, you don’t need to know a lot of html for this. Open the html output with notepad ++. Control F search for “font-size”. You should see a section with font sizes for the headers (h1, h2, h3,…).
How do you make a barplot smaller in R?
To make the bars narrower or wider, set the width of each bar with the width argument. Larger values make the bars wider, and smaller values make the bars narrower. To add space between bars, specify the space argument. The default value is 0.2.
How do you customize a bar graph in R?
Customizing Bar Charts in R
- Adding a name to the chart. It is possible to add a title to the graph by using the main argument.
- Adding labels to the bar chart. Using the xlab and the ylab arguments, we can add labels to the X and Y axes of the bar chart.
- Changing the color of the bars.
- Adding a border to the bars.
How to draw a scatterplot with a default legend in R?
Now, we can draw these data and a default legend as shown below: plot ( x, y, # Draw plot in Base R col = group , pch = 16) legend (“topright”, # Add legend to plot legend = c (“Group 1”, “Group 2”) , col = 1:2 , pch = 16) The output of the previous R syntax is shown in Figure 1 – A Base R scatterplot containing a legend with default size.
How do I change the size of the legend in ggplot2?
Change ggplot2 Legend Title Font Size We can use the legend.title argument to make the legend title font size larger: ggplot (df, aes(fill=position, y=points, x=team)) + geom_bar (position=’dodge’, stat=’identity’) + theme (legend.title = element_text (size=30)) Change ggplot2 Legend Text Font Size
How do you add a 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 change the size of the keys of the legend?
The following code shows how to use the legend.key.size argument to make the keys of the legend larger: We can also use the legend.key.width and legend.key.height arguments to specify widths and heights for the keys: We can use the legend.title argument to make the legend title font size larger: