Using GSUB - Fairtreegists

gistfile1.txt

We uuse GSUB to change parts of a string. 

This is particularly useful if we want to replace parts of a word or phrase.

It can be used as follows to, e.g., replace all the '/' by a '_' in data:

    data[y,z]<-gsub("/","_", data[y,z])
    
To remove all parts of a string after a sign, we can also use gsub.
E.g., if we have naming conventions such as:
    
    Meanreversion - JALSH/3Month/etc
    Value - JALSH/3Month/etc

We can remove all parts of strings after the '-' using:

    colnames(data) <- gsub("\ - .*","", colnames(data))

All strings before the _:

gsub("_.*","", files)