Creating interaction effect plot, ggplot or other

Question

I have found an interaction effect between the predictors age and education level in a multiple regression model assessing the effects of various predictors on alcohol consumption. I wish to graph this interaction effect using ggplot, but an alternative will do.

I have attempted to do it this way:

p <- ggplot(DataFrame, aes(ED,AGE, label=interaction-effect))

p <- p + geom_point(colour= "red")+geom_text(size=3) # colour = colr does not work 

p

This is continuously spouting errors. I cannot seem to find a way to simply make this plot and would greatly appreciate help.

I would provide some data, or use the mtcars dataset. For more info, take a look at this question. The better the question is, the faster and more precise the answer will be. — marbel
– marbel, Commented Jan 21, 2014 at 3:55

Community · Accepted Answer · 2017-05-23 10:30:54Z

1

A straight-forward google search yields fairly good results:

http://www.r-bloggers.com/visual-interpretation-of-interaction-terms-in-linear-models-with-ggplot-rstats/

Interaction Plot in ggplot2

https://stats.stackexchange.com/questions/9477/how-to-draw-an-interaction-plot-with-confidence-intervals

http://www.cookbook-r.com/Graphs/Plotting_means_and_error_bars_(ggplot2)/#error-bars-for-within-subjects-variables

edited May 23, 2017 at 10:30

CommunityBot

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answered Jan 21, 2014 at 7:22

CMichael

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