>> I have a data file 'stop' to be scanned in
>> R.
>> But I want to ignore one specific number '21' there. Putting differently,
>> I
>> want to get all numbers in the file except 21. Is there any command to
>> achieve it?
>>
See the na.strings argument to scan, and note that it can be a vector (eg
c("NA","999"))
This may be better than relying on exact matches to 21 after reading because of
binary representation issues (faq 7.31 etc.)
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