Hello,
The append function works in a strange way because it modifies its
first argument, as well as the result variable. Unusual for R, anyway.
It would be nice to document this behaviour. Notice in the example
that both combined and celSet have been expanded to 12 elements.
cdf <- AffymetrixCdfFile$byChipType("Hs_PromPR_v02")
celSet <- AffymetrixCelSet$byName("H2A", cdf = cdf )
> celSet
AffymetrixCelSet:
Name: H2A
Tags:
Path: rawData/H2A/Hs_PromPR_v02
Platform: Affymetrix
Chip type: Hs_PromPR_v02
Number of arrays: 6
Names: LNCaP_H2A_Input, LNCaP_H2A_IP1, LNCaP_H2A_IP2, ...,
PrEC_H2A_IP2 [6]
Time period: 2009-03-06 11:54:53 -- 2009-03-06 15:54:41
Total file size: 269.16MB
RAM: 0.01MB
celSet2 <- AffymetrixCelSet$byName("H2AZ", cdf = cdf )
> celSet2
AffymetrixCelSet:
Name: H2AZ
Tags:
Path: rawData/H2AZ/Hs_PromPR_v02
Platform: Affymetrix
Chip type: Hs_PromPR_v02
Number of arrays: 6
Names: LNCaP_H2A.Z_Input, LNCaP_H2A.Z_IP1, LNCaP_H2A.Z_IP2, ...,
PrEC_H2A.Z_IP2 [6]
Time period: 2009-03-06 13:38:03 -- 2009-03-06 16:17:27
Total file size: 269.17MB
RAM: 0.01MB
combined <- append(celSet, celSet2)
> combined
AffymetrixCelSet:
Name: H2A
Tags:
Path: rawData/H2A/Hs_PromPR_v02
Platform: Affymetrix
Chip type: Hs_PromPR_v02
Number of arrays: 12
Names: LNCaP_H2A_Input, LNCaP_H2A_IP1, LNCaP_H2A_IP2, ...,
PrEC_H2A.Z_IP2 [12]
Time period: 2009-03-06 11:54:53 -- 2009-03-06 16:17:27
Total file size: 538.33MB
RAM: 0.02MB
>
> celSet
AffymetrixCelSet:
Name: H2A
Tags:
Path: rawData/H2A/Hs_PromPR_v02
Platform: Affymetrix
Chip type: Hs_PromPR_v02
Number of arrays: 12
Names: LNCaP_H2A_Input, LNCaP_H2A_IP1, LNCaP_H2A_IP2, ...,
PrEC_H2A.Z_IP2 [12]
Time period: 2009-03-06 11:54:53 -- 2009-03-06 16:17:27
Total file size: 538.33MB
RAM: 0.02MB
--
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