Unavailable chip layout packages for `olgio` package
1
0
Entering edit mode
mschu.dev • 0
@mschudev-8800
Last seen 9.6 years ago
United Kingdom

I am trying to use the `olgio` package to process some arrays from GEO/ArrayExpress (E-GEOD-53405 and E-GEOD-61364, among others), and I am running into issues with some of the chip layout packages where they are not available.

In some cases, there might be another chip that is similar enough to use its layout information instead ([3]). Is there a list of which packages one can fall back on? If it is known, how can I tell oligo to use this package instead?

The following are examples:

[1] is looking for the platform name pd.huex.1.0.st.v1, but only pd.huex.1.0.st.v2 is available as a BioConductor package (which might be very similar, can I use v2 instead of v1?)
[2] is looking for the platform pd.u133aaofav2, which is almost identical with pd.ht.hg.u133a according to [3]

Is there any way to process those packages, preferentially with `olgio`, but any other BioConductor package as well?

 

[1] http://www.ebi.ac.uk/arrayexpress/files/E-GEOD-53405/E-GEOD-53405.raw.3.zip/GSM1290926_t0_rep2.CEL
[2] http://www.ebi.ac.uk/arrayexpress/files/E-GEOD-61364/E-GEOD-61364.raw.1.zip/GSM1503012_05202764006888021105960891.A01.CEL
[3] help with SCAN.UPC and u133aaofav2

microarray oligo • 1.1k views
ADD COMMENT
0
Entering edit mode
@james-w-macdonald-5106
Last seen 39 minutes ago
United States
  1. I don't know about this one - Affy doesn't have anything on their site that I can easily find to show the differences between the v1 and v2 array. In addition they only have files for the v2 array, so it's not simple to find if there are any differences. I would imagine any differences are trivial, else they would have incremented to 1.1 or 2.0 rather than just a simple version.
  2. You can analyze this array directly using the affy package. The correct cdf package will be downloaded and installed automagically for you.
ADD COMMENT
0
Entering edit mode

Thanks for point 2 - I used the oligo package which doesn't find the correct cdf.

ADD REPLY
0
Entering edit mode

Thanks for point 2 - I used the oligo package which doesn't find the correct cdf.

ADD REPLY
0
Entering edit mode

Right. But that's not what I said to do, is it?

> getGEOSuppFiles("GSE61364")
ftp://ftp.ncbi.nlm.nih.gov/geo/series/GSE61nnn/GSE61364/suppl/
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  268M  100  268M    0     0  8623k      0  0:00:31  0:00:31 --:--:-- 7383k
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  8401  100  8401    0     0   4703      0  0:00:01  0:00:01 --:--:--  4703
> setwd("GSE61364/")
> untar("GSE61364_RAW.tar")

> library(affy)
> dat <- ReadAffy(filenames = list.celfiles()[1:5])
> dat
trying URL 'http://bioconductor.org/packages/3.1/data/annotation/src/contrib/u133aaofav2cdf_2.16.0.tar.gz'
Content type 'application/x-gzip' length 1806754 bytes (1.7 MB)
==================================================
downloaded 1.7 MB

* installing *source* package  u133aaofav2cdf  ...
** R
** data
** preparing package for lazy loading
Creating a generic function for  nchar  from package  base  in package  S4Vectors
** help
*** installing help indices
** building package indices
** testing if installed package can be loaded
Creating a generic function for  nchar  from package  base  in package  S4Vectors
* DONE (u133aaofav2cdf)

The downloaded source packages are in
     /data/tmp/RtmpZ2fr9J/downloaded_packages
Updating HTML index of packages in '.Library'
Making 'packages.html' ... done
Creating a generic function for  nchar  from package  base  in package  S4Vectors

AffyBatch object
size of arrays=744x744 features (18 kb)
cdf=U133AAofAv2 (22944 affyids)
number of samples=5
number of genes=22944
annotation=u133aaofav2
notes=

> eset <- rma(dat)
Background correcting
Normalizing
Calculating Expression
ADD REPLY

Login before adding your answer.

Traffic: 766 users visited in the last hour
Help About
FAQ
Access RSS
API
Stats

Use of this site constitutes acceptance of our User Agreement and Privacy Policy.

Powered by the version 2.3.6