On Feb 8, 2012, at 9:48 PM, kevin123 wrote:
Hi,
This is only a small portion of the Data i am working on
I want to make a subset of this data set( Data Set=Claims)
MemberID ProviderID Vendor PCP Year Specialty
1 42286978 8013252 172193 37796 Y1 Surgery
2 97903248 3316066 726296 5300 Y3 Internal
3 2759427 2997752 140343 91972 Y1 Internal
4 73570559 7053364 240043 70119 Y3 Laboratory
I want to put all the rows containing Y1 into a subset. I tried this
but it
does not work
sub <- subset(Claims, Year=Y1)
You (as well , apparently, as Tal) don't seem to have learned that "="
is an assignment function and the needed Comparison operator is "=="
?Comparison
Try instead:
sub <- subset(Claims, Year=="Y1")
--
David Winsemius, MD
West Hartford, CT
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