r语言 - 绘制 ggplot 时出现"plot.new has not been called yet"错误

Question

为什么会发生这种情况/如何解决此问题？Iv 阅读了有关此错误的其他一些条目，但仍然感到困惑，特别是因为当我在没有粗体部分的情况下运行以下代码时，它运行良好，但包含粗体部分，我收到此错误。

法典：

ggplot(diamonds, aes(x = price)) + geom_histogram(binwidth = 500) + 
axis(side = 1, at = seq(0, 20000, by = 500))

错误：

Error in axis(side = 1, at = seq(0, 20000, by = 500)) : 
plot.new has not been called yet

Answer 1

>axis是图形包的一部分，而不是ggplot。所以axis正在寻找一个plot而不是一个ggplot.

尝试

ggplot(diamonds, aes(x = price)) + 
geom_histogram(binwidth = 500) +
scale_x_continuous(breaks = seq(0,20000, by = 500)) 

或在基础图形中

hist(diamonds$price) 
axis(side = 1, at = seq(0, 20000, by = 500))