Hi,

This worked great:

sub <- subset(Claims, Year=="Y1")

Thanks for your help

Kevin

On Thu, Feb 9, 2012 at 6:12 AM, David Winsemius <dwinsemius@comcast.net>wrote:

>
> 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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