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在下面的示例代码中，我希望marker只circle为我选择的每个代码Grade提供不同size的选项。现在是size基于- 我想将它提高至少两个级别，因为当前的开始（以 开始）太小了。sequencealphabetsizeGrade A

library(tidyverse)

DF1 = data.frame(Grade = c("A","B","C","D"), Fee = c(50, 100,80, 60), ST1 = c(0.5, 0.7, 0.67,0.60),
                 ST2 = c(0.48, 0.8, 0.697,0.77), ST3 = c(0.53, 0.58, 0.57,0.62), type = rep("Teenage",4))
DF2 = data.frame(Grade = c("A","B","C","D"), Fee = c(60, 120,90, 70), ST1 = c(0.55, 0.73, 0.65,0.70),
                 ST2 = c(0.58, 0.82, 0.73,0.75), ST3 = c(0.55, 0.52, 0.58,0.62), type = rep("Overage",4))

DFPlot_1 = gather(data = DF1, key = "Variable", value = "Value", -Fee, -Grade, -type)
DFPlot_2 = gather(data = DF2, key = "Variable", value = "Value", -Fee, -Grade, -type)

DF =rbind(DFPlot_1,DFPlot_2)
ggplot(data = DF, aes(x= Fee, color = Grade, size = Grade))+
  geom_point(aes(y = Value))+ facet_grid(type ~ Variable)

这是Figure我在运行上述代码时得到的 - 请参阅尺寸(A is almost non-visibile)。我想增加尺寸，但从更高的水平开始。 在此处输入图像描述

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1 回答 1

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如上所述，您要使用scale_size_manual. 您有几种方法来调整大小（阅读文档），但适合您的情况的示例是：

ggplot(data = DF, aes(x= Fee, color = Grade, size = Grade))+
  geom_point(aes(y = Value))+ facet_grid(type ~ Variable) + 
  scale_size_manual(values = c(4,5,6,7))
于 2020-02-13T20:35:54.700 回答