I am not good at R coding. I have a problem to subset a data set based on column names. In my data set, The first 14 columns have words as names, and the rest 1000 columns have numbers as names (not in order). When I read the data in, I guess all the column names become strings. How do I subset certain columns based on column names' value (like column names between 750 and 850, and still keep the first 14 columns) among those 1000 columns with numbers as names? Is there any easy way to do it? Your help is very appreciated.