changing legend size and number of columns

[lily li]

Hi ggplot users,

I want to ask that how to change legend size in the figure? and how to change it from one column to several columns?

For example, when changing legend size, I use the code below but the legend size does not change with different numbers. Thanks for your help.

legend.title=element_text(size=12)

[Dennis Murphy]

Hi:

Start here: http://docs.ggplot2.org/current/guide_legend.html

Some legend options are handled by the theming system, others by the
guide_legend() function. Go through the examples in guide_legend() to
get a feel for what it can do.

From what you described, changing the arrangement from one to multiple
columns is done with guide_legend(). For non-data features such as
sizing, the theming system is usually more appropriate, but check the
arguments to guide_legend() - some alternatives may be available
there.

In the absence of a reproducible example and (at least) a description
of the desired result, there isn't much else to offer in the way of
help.

Dennis

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