## ----include = FALSE----------------------------------------------------------
knitr::opts_chunk$set(
  collapse = TRUE,
  comment = "#>"
)

## ----eval=FALSE---------------------------------------------------------------
#  if (!requireNamespace("devtools")) install.packages("devtools")
#  devtools::install_github("Asa12138/pcutils")
#  devtools::install_github("Asa12138/MetaNet")