[BioC] rtracklayer laying a track

[simon [guest]]

I could not load a custom track to the UCSC genome browser, so I tried it according to the rtracklayer vignette and I got also an error. What am I doing wrong?

thanks!
simon

 -- output of sessionInfo(): 

> data(targets)
> targetRanges <- IRanges(targets$start, targets$end)
> targetTrack <- with(targets,GRangesForUCSCGenome("hg18", chrom, targetRanges, strand,name, target))
> session <- browserSession("UCSC")
> track(session, "targets") <- targetTrack
Fehler in genome(seqinfo(x)) : 
  Fehler bei der Auswertung des Argumentes 'x' bei der Methodenauswahl
für Funktion 'genome': Fehler in .normargSeqlengths(seqlengths, seqnames) : 
  supplied 'seqlengths' must be a vector


R version 2.14.0 (2011-10-31)
Platform: x86_64-unknown-linux-gnu (64-bit)

locale:
 [1] LC_CTYPE=de_AT.UTF-8          LC_NUMERIC=C                 
 [3] LC_TIME=de_AT.UTF-8           LC_COLLATE=de_AT.UTF-8       
 [5] LC_MONETARY=de_AT.UTF-8       LC_MESSAGES=de_AT.UTF-8      
 [7] LC_PAPER=de_AT.UTF-8          LC_NAME=de_AT.UTF-8          
 [9] LC_ADDRESS=de_AT.UTF-8        LC_TELEPHONE=de_AT.UTF-8     
[11] LC_MEASUREMENT=de_AT.UTF-8    LC_IDENTIFICATION=de_AT.UTF-8

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
[1] GenomicRanges_1.6.4 IRanges_1.12.5      rtracklayer_1.14.4 
[4] RCurl_1.8-0         bitops_1.0-4.1      rj_1.0.2-5         

loaded via a namespace (and not attached):
[1] Biostrings_2.22.0 BSgenome_1.22.0   rj.gd_1.0.2-2     tools_2.14.0     
[5] XML_3.6-2         zlibbioc_1.0.0   


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