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R Graphs Cookbook by Hrishi Mittal

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Setting colors of points, lines, and bars

In this recipe we will learn the simplest way to change the colors of points, lines, and bars in scatter plots, line plots, histograms, and bar plots.

Getting ready

All you need to try out this recipe is to run R and type the recipe at the command prompt. You can also choose to save the recipe as a script so that you can use it again later on.

How to do it...

The simplest way to change the color of any graph element is by using the col argument. For example, the plot() function takes the col argument:

plot(rnorm(1000),
col="red")
How to do it...

If we choose plot type as line, then the color is applied to the plotted line. Let's ...

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