R_learning_note

This is a assignment record of Statistic Computing and Empirical Methods(SCEM)

Problems

• When git push shows "error: cannot run rpostback-askpass: No such file or directory"
  Use ssh link instead of http. Stackoverflow

• knit HTML Error: pandoc version 1.12.3 or higher is required and was not found (see the help page ?rmarkdown::pandoc_available).

• Could not install library properly

  install.packages("usethis") # Install the "usethis" R package
  library(usethis) # Load the "usethis" R library
  use_git_config(user.name = "Bob Smith", user.email = "bob@example.org") # Set profile info
  

• What if I want to create matrix element in different orders.

• Why is solve function able to do $Y^{-1}X$ using solve(y_mtx,x_mtx) function

• Cannot download tidyverse package. Reinstall in current place and not to install it in Anaconda.