R
Robert Nguyen
I want to write a code that looks at my data and delete
all the unwanted lines. For example, say the first column
in my data contains the alphabet, I want to delete all the
lines that are not letters A, B, or C. Thanks in advance
for any help.
all the unwanted lines. For example, say the first column
in my data contains the alphabet, I want to delete all the
lines that are not letters A, B, or C. Thanks in advance
for any help.