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Hi! I've done a merging between 2 dataframes using merge(): delme <- merge(miDUNS50peqB,Bnomscodmunicipis,by.x="POBLACION",by.y="NOMMUNI",all.x=T,sort=F) After realizing some problems in the resulting dataset, I've found that the problem was that, in some cases, there was no match between the by.x and the by.y elements, despite the fact that, apparently, such matching sho...

...Subject: Matching failure in merge() Date: Thu, 19 Mar 2009 20:04:48 +0100 From: Agustin Lobo <Agustin.Lobo at ija.csic.es> Reply-To: Agustin.Lobo at ija.csic.es To: r-help at r-project.org Hi! I've done a merging between 2 dataframes using merge(): delme <- merge(miDUNS50peqB,Bnomscodmunicipis,by.x="POBLACION",by.y="NOMMUNI",all.x=T,sort=F) After realizing some problems in the resulting dataset, I've found that the problem was that, in some cases, there was no match between the by.x and the by.y elements, despite the fact that, apparently, such matching sho...