chrome trouble shooting

chrome has many chrome://commands that will help you tuning and trouble shooting your chrome. chrome://about will list all commands and its links.

Using R studio to find the set intersect and difference

1) make data into a one column text file with a title, or two dimension data matrix
2) use  read.csv read file into a data frame
3) use column index in data frame to read one column into a array(set)
    a <- data[,1]
4) use intersect to get common set between set
5) use setdiff to find set diffence