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Editorial Team
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Asked: 2026-06-06T17:18:42+00:00

Consider the example plot below. I’d like to make the little boxes around each

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Consider the example plot below. I’d like to make the little boxes around each of the symbols in the legend go away. How an I do this?

 ggplot(mtcars, aes(wt, mpg, shape=factor(cyl))) + geom_point() + theme_bw()

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1 Answer

  1. Editorial Team

    You’re looking for:

     + opts(legend.key = theme_blank())

    You can see lots of examples of all sorts of this stuff in ?opts. I couldn’t remember off the top of my head which one it was, so I just tried a few until I got it right.

    Note: Since version 0.9.2 opts has been replaced by theme:

    + theme(legend.key = element_blank())
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