Very well, Bill. all = TRUE seemed to fix the problem. On Wed, Feb 9, 2011 at 7:54 PM, <bill.venab...@csiro.au> wrote:
> You want advice? > > 1. Write sentences that contain a subject and where appropriate, an object > as well. This makes your email just that bit more polite. This list is not > a paid service. > > 2. The "sheets" may have variables in common, but do they have the same > name in both, and the same class, and some values in common? > > You do not give us very much to go on. > > -----Original Message----- > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] > On Behalf Of Benjamin Caldwell > Sent: Thursday, 10 February 2011 1:22 PM > To: r-help > Subject: [R] merge multiple .csv files > > Am trying to merge about 15 .csv tables - tried a test run but came up with > 0 rows (no data for each variable/column head) > > > CAHSEE.EA.feb.2009<-read.csv("2009 CAHSEE EA feb 2009.csv", header=TRUE) > > CAHSEE.IM.MATH.2009<-read.csv("2009 CAHSEE Impact Math.csv", header=TRUE) > > testmerge<-merge(CAHSEE.EA.feb.2009,CAHSEE.IM.MATH.2009) > > testmerge > [1] Grade LocalStudentID MathPassed MathScaleScore SchoolCode > > [6] LastName FirstName ELAPassed ELAScaleScore > MathTestDate > <0 rows> (or 0-length row.names) > > I know several variables are shared in both sheets. Please advise. > > [[alternative HTML version deleted]] > > ______________________________________________ > 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. > [[alternative HTML version deleted]] ______________________________________________ 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.
