If you really prefer solution code, then provide reproducible example code as
the footer requests.
Use ?merge with the all.x=TRUE parameter, and then perform your calculations on
the resulting combined data frame, using ?ifelse and ?is.na as needed.
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Sent from my phone. Please excuse my brevity.
On June 29, 2014 9:24:39 AM PDT, Dr Eberhard Lisse <nos...@lisse.na> wrote:
>I have two data frames like so
>
>> qpiso
> iso requests
>1 A1 20
>2 A2 199
>3 AD 5
>4 AE 176
>...
>189 ZW 82
>
>> qplegit
> iso requests
>1 A2 36
>2 AE 4
>3 AM 2
>4 AO 1
>...
>100 ZW 3
>
>
>I want to create another dataframe qpspam which contains all pairs
>from pqiso with the values for requests of qplegit being subtracted
>from those which exist in qpiso,
>
>ie
> iso requests
>1 A1 20
>2 A2 163
>3 AD 5
>4 AE 172
>...
>189 ZW 79
>
>but don't know how to do this, and google isn't too helpful.
>
>As usual, a solution is preferred, but a pointer to where I can
>read this up is equally appreciated :-)-O
>
>el
>
>______________________________________________
>R-help@r-project.org mailing list
>https://stat.ethz.ch/mailman/listinfo/r-help
>PLEASE do read the posting guide
>http://www.R-project.org/posting-guide.html
>and provide commented, minimal, self-contained, reproducible code.
______________________________________________
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
