bgunter.4567 at gmail.com
Sun Feb 12 06:36:21 CET 2017
Either subscripting or ?subset.
There are many good R tutorials on the web. You should spend some
(more?) time with some.
"The trouble with having an open mind is that people keep coming along
and sticking things into it."
-- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )
On Sat, Feb 11, 2017 at 9:02 PM, Val <valkremk at gmail.com> wrote:
> Hi all,
> I have a big data set and want to remove rows conditionally.
> In my data file each person were recorded for several weeks. Somehow
> during the recording periods, their last name was misreported. For
> each person, the last name should be the same. Otherwise remove from
> the data. Example, in the following data set, Alex was found to have
> two last names .
> Alex West
> Alex Joseph
> Alex should be removed from the data. if this happens then I want
> remove all rows with Alex. Here is my data set
> df <- read.table(header=TRUE, text='first week last
> Alex 1 West
> Bob 1 John
> Cory 1 Jack
> Cory 2 Jack
> Bob 2 John
> Bob 3 John
> Alex 2 Joseph
> Alex 3 West
> Alex 4 West ')
> Desired output
> first week last
> 1 Bob 1 John
> 2 Bob 2 John
> 3 Bob 3 John
> 4 Cory 1 Jack
> 5 Cory 2 Jack
> Thank you in advance
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> and provide commented, minimal, self-contained, reproducible code.
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