[R] create a new data frame after comparing two columns of the previous data frame

[Petr PIKAL]

Hi

r-help-bounces at r-project.org napsal dne 28.06.2011 02:45:01:

> 
> Right. You forgot the comma!

If you want to resolve this rather cryptic advice see

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Regards
Petr

> 
> -- 
> David.
> 
> On Jun 27, 2011, at 7:10 PM, Nanami wrote:
> 
> > it's a table; I read it from a file; I've tried to make it look 
> > prettier:
> >
> >> head(intra)
> > chr   miRNA   start     end       strand              ACC
> > hsa_ID           region region_start region_end
> > chr1 miRNA 1102484 1102578      +   ACC="MI0000342"; ID="hsa- 
> > mir-200b";
> > exon      1102484    1102578
> > chr1 miRNA 1103243 1103332      +   ACC="MI0000737"; ID="hsa- 
> > mir-200a";
> > exon      1103243    1103332
> > chr1 miRNA 1104385 1104467      +   ACC="MI0001641";  ID="hsa- 
> > mir-429";
> > exon      1104385    1104467
> > chr1 miRNA 3044539 3044599      +   ACC="MI0015861"; ID="hsa- 
> > mir-4251";
> > exon      3044539    3044599
> > chr1 miRNA 3477260 3477354      -   ACC="MI0003556"; ID="hsa- 
> > mir-551a";
> > exon      3477260    3477354
> > chr1 miRNA 6489894 6489956      -   ACC="MI0015864"; ID="hsa- 
> > mir-4252";
> > exon      6489894    6489956
> >
> >
> > When I changed && with &  I got this error:
> >
> >> new <- intra[(intra$start != intra$region_start )&(intra$end !=
> >> intra$region_end)]
> > Error in `[.data.frame`(intra, (intra$start != intra$region_start) &
> > (intra$end !=  :
> >  undefined columns selected
> >
> > What I would like to do is to create a new table that only contains 
> > the rows
> > for which column start and region_start are not the same.
> >
> >
> >
> > --
> > View this message in context: http://r.789695.n4.nabble.com/create-a-
> new-data-frame-after-comparing-two-columns-of-the-previous-data-frame-
> tp3628981p3629092.html
> > Sent from the R help mailing list archive at Nabble.com.
> >
> > ______________________________________________
> > R-help at 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.
> 
> David Winsemius, MD
> West Hartford, CT
> 
> ______________________________________________
> R-help at 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.