我有一个用 corrplot 创建的相关矩阵对象
p1 <- corrplot(correlations_history, method = "number", type = "lower", title = "Regional Factor Correlation Matrix over history", mar = c(0,0,1,0), number.cex = 0.5, number.digits = 2)
我正在尝试将其另存为 pdf。出于某种原因，我无法弄清楚如何做到这一点。任何帮助表示赞赏。谢谢！