[R] if and

David L Carlson dcarlson at tamu.edu
Tue Feb 28 16:38:59 CET 2017

This is not a reproducible example. You did not even show us one of the scripts that apparently did work. None of your if() statements contains a logical expression. You should read "An Introduction to R" and probably other tutorials on R.




and the manual pages at




David L Carlson
Department of Anthropology
Texas A&M University
College Station, TX 77840-4352

-----Original Message-----
From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of Val
Sent: Monday, February 27, 2017 7:48 PM
To: R help <r-help at r-project.org>
Subject: [R] if and

Currently I have  about  six or more  scripts that do the same job.  I
thought it might be possible and more efficient to use one script by using
IF ELSE statements. Here is an example but this will be expandable for
several countries ans year-months

Year-month = FEB2015, FEB2012,  Feb2010
 country  = USA, CAN.MEX
First I want to do if country = USA and year-month = FEB2015, FEB2012 do
the statements
second if country = CAN and year-month =Feb2010 do  the statements

if(country="USA" & year-month = "FEB2015" | "FEB2012" ){

} else if (country="USA" & year-month ="FEB2015") {


The above script did not work. is there a different ways of doing it?

Thank you in advance

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