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Julian Lee
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140
@julian-lee-2487
Last seen 10.2 years ago
Hi,
may i know the differences between the 2 packages and why is this so.
I have a gene of interest on the Illumina platform and have been using
the IlluminaHumanv2ProbeID.db package to annotate it, but things have
changed when i moved to R.2.8.0 on illuminaHumanv2BeadID.db package.
I'll illustrate it by an example
Gene of interest - BMP4
R.2.7.1
illuminaHumanv2ProbeID.db package
>bmp4_p<-as.character(unlist(mget('BMP4',revmap(illuminaHumanv2ProbeID
SYMBOL))))
> bmp4_p
[1] "1850561" "1940386" "3360703"
> sessionInfo()
R version 2.7.1 (2008-06-23)
i386-pc-mingw32
locale:
LC_COLLATE=English_United States.1252;LC_CTYPE=English_United
States.1252;LC_MONETARY=English_United
States.1252;LC_NUMERIC=C;LC_TIME=English_United States.1252
attached base packages:
[1] tools stats graphics grDevices utils datasets
methods
[8] base
other attached packages:
[1] illuminaHumanv2ProbeID.db_1.1.1 AnnotationDbi_1.2.2
[3] RSQLite_0.6-9 DBI_0.2-4
All looks well. However, when i upgraded to R.2.8.0, and installed the
illuminaHumanv2BeadID.db package, i encountered these results
R.2.8.0
illuminaHumanv2BeadID.db package
> bmp4_p<-as.character(unlist(mget('BMP4',revmap(illuminaHumanv2BeadID
SYMBOL))))
> bmp4_p
[1] "1850561" "3360703"
> sessionInfo()
R version 2.8.0 (2008-10-20)
i386-pc-mingw32
locale:
LC_COLLATE=English_United States.1252;LC_CTYPE=English_United
States.1252;LC_MONETARY=English_United
States.1252;LC_NUMERIC=C;LC_TIME=English_United States.1252
attached base packages:
[1] tools stats graphics grDevices utils datasets
methods
[8] base
other attached packages:
[1] illuminaHumanv2BeadID.db_1.1.2 RSQLite_0.7-1
[3] DBI_0.2-4 AnnotationDbi_1.4.0
[5] Biobase_2.2.0
The probeID/beadID "1940386" has disappeared. Why is this so? is there
a mistake in the illuminaHumanv2BeadID package?
Is it possible to achieve reproducible results by upgrading to 2.8.0?
many thanks
julian
--
Julian Lee
Bioinformatics Specialist
Cellular and Molecular Research
National Cancer Center Singapore