[BioC] factDesign - another question

[Claire Wilson]

Dear all,
I have been working through the factDesign vignette and it appears that
the probeset identifiers have been lost from the expression set and also
that the expression calls appear to not be in log2 form as indicated in
the vignette(code shown below)...thanks for any help, claire

> library(affy)
Welcome to Bioconductor
         Vignettes contain introductory material.  To view,
         simply type: openVignette()
         For details on reading vignettes, see
         the openVignette help page.

Synching your local package management information ...
Packages which have been added/updated:
        estrogen
> library(factDesign)
> data(estrogen)
>  estrogen
Expression Set (exprSet) with
        500 genes
        8 samples
                 phenoData object with 2 variables and 8 cases
         varLabels
                ES: absence/presence of estrogen
                TIME: 10/48 hours
> exprs(estrogen)[1:10,]
          [,1]     [,2]     [,3]     [,4]     [,5]     [,6]      [,7]
[,8]
 [1,]  787.583  794.075  794.572  711.025  730.022  703.197   796.159
760.515
 [2,]  435.335  513.685  548.721  580.833  518.279  632.801   581.357
688.602
 [3,]  197.784  196.131  184.991  156.459  243.296  219.666   182.644
152.647
 [4,] 1057.410 1099.750  963.088 1094.110 1152.180 1446.360  1102.990
1509.770
 [5,]  452.775  436.912  483.615  447.999  444.369  444.443   540.446
537.549
 [6,] 1175.560 1054.800 3445.030 3906.160  674.682  474.879   998.373
901.746
 [7,]  914.076  823.871  729.431  703.935  376.056  282.645   439.117
465.587
 [8,] 7321.400 6809.660 8195.580 7342.840 6739.340 4984.460 15798.700
13363.800
 [9,]  306.250  275.993  295.424  240.055  183.667  308.580   232.570
248.121
[10,]  482.591  473.398  463.318  495.870  493.339  540.374   507.429
486.650
> exprs(estrogen)["34371_at",]
Error: no dimnames attribute for array
 
--------------------------------------------------------

 
This email is confidential and intended solely for the use o...{{dropped}}