R中ggplot图的背景色的对角渐变 [英] Diagonal grading of background color of ggplot graph in R

问题描述

我希望在背景逐渐褪色的情况下以以下样式制作图形.更具体地说，我希望得到对角衰落

我已经这样绘制了图形:

  ggplot(数据)+aes(x = Data $ log.avg，y = Data $ CoV)+geom_point(alpha = 0.3)+ggtitle(对udbetalingskonti的过大")+geom_text(aes(label = ifelse(Data $ log.avg> 1.6 | Data $ CoV> 2&数据$ log.avg>-0.5，as.character(Data $ KT)，''))，hjust = -0.2，vjust = -0.2，size = 3)+labs(x ="Avg"，y =变异系数") 

解决方案

请考虑以下内容:

 `aes(x，y，fill = x + y)`#右上角最暗aes(x，y，fill = y-x)#在左上角最暗 

要与切换到 high &的开关组合使用 scale_fill_gradient

中的 low 自变量

I am looking to do a graph in the following style, with a fading background. More specifically, I hope to get a diagonal fading

I have already made the graph as so:

ggplot(Data) +
  aes(x=Data$log.avg, y=Data$CoV) +
  geom_point(alpha = 0.3) +
  ggtitle("Oversigt over udbetalingskonti") +
  geom_text(aes(label=ifelse(Data$log.avg > 1.6 | Data$CoV > 2 &
  Data$log.avg > -0.5 , as.character(Data$KT),'')),hjust=-0.2, vjust=-0.2, size=3) +
 labs(x="Avg",y="Coefficient of Variation") 

解决方案

This basic approach helped me with a similar problem.

## create a diag gradient background
## create a df to supply the background to geom_tile
df <- expand.grid(x=-100:100, y=-100:100)     # dataframe for all combinations

## plot
ggplot(df, aes(x, y, fill=x+y)) +      # map fill to the sum of x & y
  geom_tile(alpha = 0.75) +      # let the grid show through a bit
  scale_fill_gradient(low='light blue', high='steelblue4')     # choose your colors

Result:

Consider the following:

`aes(x, y, fill=x+y)` # darkest in the top right corner
`aes(x, y, fill=y-x)` # darkest in the top left corner

To be used in combo with switches to the high & low arguments in scale_fill_gradient

这篇关于R中ggplot图的背景色的对角渐变的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！