GOTerm enrichment rna-seq data

Question

[studyfranco]

Hello,

I would like perform a GOTerm analysis with my rna-seq data. I have search lot of tool in R. The tool I tested are topGO. But the problem are I don't know how perform a globaltest. In the documentation, nothing about this test. I have finish the major task, but I have a error. My code :

test.stat <- new("classicExpr", testStatistic=GOglobalTest, name="Global Test")
test <- initialize(test.stat, testStatistic=GOglobalTest, exprDat=Lfc, name="Global_Test")
GOdata[[ont]] <- new("topGOdata", ontology=ont, allGenes=inputGeneList, 
                 annot=annFUN.gene2GO, gene2GO=geneID2GO[[ont]], nodeSize=nodeSize)
resultGlobal <- getSigGroups(GOdata[["BP"]], test)

I obtain this error :

         -- Classic Algorithm -- 

         the algorithm is scoring 8990 nontrivial nodes
         parameters: 
             test statistic: Global_Test
Error in get(name, envir = asNamespace(pkg), inherits = FALSE) : 
  objet 'globaltest' introuvable

Have you an idea ? Or do you suggest me a another software ?

Have a nice day !