ggplot2 specific command

最新推荐文章于 2021-12-28 14:46:11 发布

翻译最新推荐文章于 2021-12-28 14:46:11 发布 · 270 阅读

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本文介绍如何在ggplot2中使用不同缩放比例的面板来更清晰地展示每组数据的特征，同时提供了如何在每个面板中重复显示相同数据的方法，以便于观察。还介绍了如何使用labs()来修改坐标轴、图例和标签。


# By default, the same scales are used for all panels. You can allow
# scales to vary across the panels with the `scales` argument.
# Free scales make it easier to see patterns within each panel, but
# harder to compare across panels.
#通过实践该代码即可领悟
##1
ggplot(mpg, aes(displ, hwy)) + geom_point() +facet_wrap(~class, scales = "free")

ggplot(mpg, aes(displ, hwy)) + geom_point() +facet_wrap(~class)

# To repeat the same data in every panel, 
# simply construct a data frame that does not contain the facetting variable.
#通过实践该代码即可领悟
ggplot(mpg, aes(displ, hwy)) + geom_point(data = transform(mpg, class = NULL), colour = "grey85") + geom_point() + facet_wrap(~class)

ggplot(mpg, aes(displ, hwy)) + geom_point() + facet_wrap(~class)

#labs() ----Modify axis, legend, and plot labels
#ggplot2 绘图时使用该参数来调整坐标轴、图例和标签

#reorder 根据数值型变量对分类变量进行重新排序
#reorder is a generic function. The "default" method treats its first argument as a categorical variable, and reorders its levels based on the values of a second variable, usually numeric.