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

[David Winsemius]

Right. You forgot the comma!

--  
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.
>
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David Winsemius, MD
West Hartford, CT