切割由ggplot2生成的图 [英] Slicing plots generated by ggplot2

问题描述

我想知道是否可以分别对ggsave生成的.png文件进行切片。如果我不想使用默认图例或标题并将其设置为FALSE，则会留下大量空白区域。那么是否有一种R方法可以将文件上下几个像素剪切掉？

I wonder if it's possible to slice a graph respectively a .png file generated with ggsave. If I do not want to use the default legend ort title and set it to FALSE it leaves me with a lot of white space. So is there an R way to just cut the file several pixels above and below the graph itself?

Thx提前！

推荐答案

您可以更改 plot.margin ，例如

You could change the plot.margin, e.g.

p + opts(plot.margin=unit(c(-1, 0, -1, 0), "lines"))

.2 opts 已被取代 by theme ：

Since version 0.9.2 opts has been replaced by theme:

p + theme(plot.margin = unit(c(-1, 0, -1, -), "lines"))

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