ggplot2: Displaying equation of the line on the plot

[Liberty Mgbanyi]

In Excel I can just click a button an include the equation of the line. please how can I display line equation on the plot in ggplot2?

[Pete St Marie]

Hi,

You might start here:

https://stackoverflow.com/questions/7549694/adding-regression-line-equation-and-r2-on-graph

Or if you have a faceted plot:

https://stackoverflow.com/questions/19699858/ggplot-adding-regression-line-equation-and-r2-with-facet

BTW, just typing what you're looking for into google can be a good place to start. For me, the above were the first 2 returns for a google search of your post title.

--pete 

[Pedro Aphalo]

Hi,

You might want to try package ggpmisc. Have a look at the vignette for examples.

(I am biased, I am the author, but I think it provides the easiest way for displaying an equation in a ggplot).

Pedro.

[Pete St Marie]

Hi Pedro,

I totally forgot about ggpmisc!

It's now in my list of R-packages-to-check-first.

Thank you for your work.

--peter