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gghighlight

Highlight geoms in ggplot2.

Installation

install.packages("gghighlight")

# Or the development version from GitHub:
# install.packages("devtools")
devtools::install_github("yutannihilation/gghighlight")

Example

(For the full version, please refer to Introduction to gghighlight).

Suppose we have a data that has so many series that it is hard to identify them by their colours as the differences are so subtle.

library(ggplot2)

ggplot(d) +
  geom_line(aes(idx, value, colour = type))

With gghighlight(), we can highlight the lines whose max values are larger than 20:

library(gghighlight)

p <- ggplot(d) +
  geom_line(aes(idx, value, colour = type)) +
  gghighlight(max(value) > 20)
#> label_key: type

p

The result is a usual ggplot object, so it is fully customizable. For example, it can be used with custom themes and facets.

p + theme_minimal()

p + theme_minimal() + facet_wrap(~ type)

gghighlight() can highlight almost any geoms. For more details, please read Introduction to gghighlight.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
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