How to make a triangle correlation heatmap with p-values labeled

In this blog post, I am going to show you how to make a correlation heatmap with p-values and significant values labeled in the heatmap body. Let’s use the PBMC single cell data as an example

library(dplyr)
library(Seurat)
library(patchwork)
library(ggplot2)
library(ComplexHeatmap)
library(SeuratData)
library(hdWGCNA)
library(WGCNA)
set.seed(1234)