How do you change the color of a legend in R?

How do you change the color of a legend in R?

To create the legend for a plot in base R, we can use legend function and if the background color of the legends needs to be changed from white to any other then bg argument in legend function will be used. For example, to change the background color to red then we can use bg=”red”.

How do you color a legend?

The color legend can either be categorical or quantitative….To edit a categorical color legend:

1. Right-click (Control-click on Mac) the legend and select Edit Colors.
2. Select a data item in the list on the left, and then select a new color in the palette on the right.
3. Click OK.

What does legend mean 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. Syntax: legend(x, y, legend, fill, col, bg, lty, cex, title, text.font, bg)

How do I show legend in R?

Add Legend to Plot in R

1. x and y: These are co-ordinates to be used to position the legend.
2. legend: Text of the legend.
3. fill: Colors to use for filling the boxes of legend text.
4. col: Colors of lines.
5. bg: It defines background color for the legend box.
6. title: Legend title (optional)
7. text.

How do I rename a legend in R?

Key ggplot2 R functions

1. p + labs(). Change legend title.
2. p + theme(…). Change legend theme: background color, legend box border, font size and color.
3. p + scale_x_discrete(limits = c(“2”, “0.5”, “1”)). Change the order of the item in the legend.
4. p + scale_fill_discrete(name = “Dose”, labels = c(“A”, “B”, “C”)).
5. guides().

What are legend colors?

The Color Legend is a small, multi-line block of text describing what the colors in the structure mean (Fig. 1), It is situated wherever there is room for it, with preference to the bottom left corner. Each line begins with a rectangle in the color of the feature. After is a brief textual description of the feature.

How do you color code a legend in Word?

Click the chart, and then click the Chart Design tab. Click Add Chart Element > Legend. To change the position of the legend, choose Right, Top, Left, or Bottom. To change the format of the legend, click More Legend Options, and then make the format changes that you want.

How do you edit a legend in R?

Key R functions to change ggplot legends:

1. p + labs(). Change legend title.
2. p + theme(…). Change legend theme: background color, legend box border, font size and color.
3. p + scale_x_discrete(limits = c(“2”, “0.5”, “1”)).
4. p + scale_fill_discrete(name = “Dose”, labels = c(“A”, “B”, “C”)).
5. guides().

How do I change the text size in legend in 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 shrink a legend 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.