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Ed
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@ed-4683
Last seen 10.3 years ago
Hi there,
I used the examples in ?gsva and got the following errors on my mac.
However, I run it also on the linux and it worked.
Please suggest.
Thanks,
Weiwei
> library(limma)
>
> p <- 10 ## number of genes
> n <- 30 ## number of samples
> nGrp1 <- 15 ## number of samples in group 1
> nGrp2 <- n - nGrp1 ## number of samples in group 2
>
> ## consider three disjoint gene sets
> geneSets <- list(set1=paste("g", 1:3, sep=""),
+ set2=paste("g", 4:6, sep=""),
+ set3=paste("g", 7:10, sep=""))
>
> ## sample data from a normal distribution with mean 0 and st.dev. 1
> y <- matrix(rnorm(n*p), nrow=p, ncol=n,
+ dimnames=list(paste("g", 1:p, sep="") , paste("s", 1:n,
sep="")))
>
> ## genes in set1 are expressed at higher levels in the last 10
samples
> y[geneSets$set1, (nGrp1+1):n] <- y[geneSets$set1, (nGrp1+1):n] + 2
>
> ## build design matrix
> design <- cbind(sampleGroup1=1, sampleGroup2vs1=c(rep(0, nGrp1),
rep(1,
nGrp2)))
>
> ## fit linear model
> fit <- lmFit(y, design)
>
> ## estimate moderated t-statistics
> fit <- eBayes(fit)
>
> ## genes in set1 are differentially expressed
> topTable(fit, coef="sampleGroup2vs1")
ID logFC t P.Value adj.P.Val B
2 g2 2.43865785 6.79741169 1.490585e-09 1.490585e-08 11.467181
1 g1 1.81349993 5.04733755 2.590932e-06 1.295466e-05 4.218446
3 g3 1.68971708 4.54930258 1.812937e-05 6.043122e-05 2.348424
5 g5 0.25263973 0.65201092 5.161890e-01 9.308575e-01 -6.688660
10 g10 0.16766254 0.49082930 6.248376e-01 9.308575e-01 -6.780571
9 g9 0.13478444 0.40143265 6.891295e-01 9.308575e-01 -6.820434
8 g8 -0.12067327 -0.32614302 7.451340e-01 9.308575e-01 -6.847833
7 g7 -0.08002351 -0.23401984 8.155437e-01 9.308575e-01 -6.873660
4 g4 0.07875803 0.20538583 8.377717e-01 9.308575e-01 -6.879960
6 g6 -0.03196719 -0.08251146 9.344379e-01 9.344379e-01 -6.897676
>
> ## estimate GSVA enrichment scores for the three sets
> gsva_es <- gsva(y, geneSets, mx.diff=1)$es.obs
|
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> version
_
platform x86_64-apple-darwin10.8.0
arch x86_64
os darwin10.8.0
system x86_64, darwin10.8.0
status
major 3
minor 0.1
year 2013
month 05
day 16
svn rev 62743
language R
version.string R version 3.0.1 (2013-05-16)
nickname Good Sport
> sessionInfo()
R version 3.0.1 (2013-05-16)
Platform: x86_64-apple-darwin10.8.0 (64-bit)
locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8
attached base packages:
[1] parallel stats graphics grDevices utils datasets
methods
base
other attached packages:
[1] limma_3.16.7 GSVA_1.8.0 GSEABase_1.22.0
graph_1.38.3
[5] annotate_1.38.0 AnnotationDbi_1.22.6 Biobase_2.20.1
BiocGenerics_0.6.0
[9] BiocInstaller_1.10.3
loaded via a namespace (and not attached):
[1] DBI_0.2-7 grid_3.0.1 IRanges_1.18.2 lattice_0.20-15
Matrix_1.0-12
[6] RSQLite_0.11.4 stats4_3.0.1 tools_3.0.1 XML_3.95-0.2
xtable_1.7-1
>
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