我有以下数据集和代码来构建数据框中每对变量的2d密度等值线图.我的问题是ggpairs()中是否有一种方法可以确保不同变量对的比例相同,例如ggplot2中不同构面的相同比例.例如,我希望每个图片的x比例和y比例都来自[-1,1].
提前致谢!
情节看起来像 
library(GGally)
ggpairs(df,upper = list(continuous = "density"),
lower = list(combo = "facetdensity"))
#the dataset looks like
print(df)
x y z w
1 0.49916998 -0.07439680 0.37731097 0.0927331640
2 0.25281542 -1.35130718 1.02680343 0.8462638556
3 0.50950876 -0.22157249 -0.71134553 -0.6137126948
4 0.28740609 -0.17460743 -0.62504812 -0.7658094835
5 0.28220492 -0.47080289 -0.33799637 -0.7032576540
6 -0.06108038 -0.49756810 0.49099505 0.5606988283
7 0.29427440 -1.14998030 0.89409384 0.5656682378
8 -0.37378096 -1.37798177 1.22424964 1.0976507702
9 0.24306941 -0.41519951 0.17502049 -0.1261603208
10 0.45686871 -0.08291032 0.75929106 0.7457002259
11 -0.16567173 -1.16855088 0.59439600 0.6410396945
12 0.22274809 …Run Code Online (Sandbox Code Playgroud)