Jimmy's first R package:humanid

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写在前面

鉴于有用这个包的都是初学者，而且根本不看我英文的readme。我只好在这里用中文强调一下用法。 因为是我的第一个R包，而且这个包并没有发表，只是我写的玩的，所有的函数源代码你都可以查看，希望给大家示范R里面如何写函数，如何制作自己的R包。 我并没有设置报错机制，所以很多函数在各种情况下对初学者不友好，各种报错，请直接学习源代码即可。

而且我下面给了两个例子，前面的包装之后的5行，后面的是完整的R代码，建议大家学后面的。

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It's a unoffical package, just for fun.

I will put many simple R functions which used frequently in my daily data analysis, which should be useful for you too.

Don't be worry to learn them, I'm used to write minimal function, just like perl, my favorate computer language !

functions including:

• batch_enrichment
• batch_pheatmap
• batch_t_test
• createGSEAinput
• downGSE
• draw_boxplot_gene
• format_DEG
• geneAnno
• keggAnno
• pathway_heatmap(todo)
• probesetAnno
• QCexpressionMatrix

please feel free to contact with me if there's bug in my package, so far it's very simple，not Defensive programming,So don't fool around with my function.

my blog

I perfer email communication: [email protected]

For linux user, it's not easy to install my package, I'm so sorry for that. you should intall R and Rstudio also in linux, and then git clone my package, Then type R:

setwd("/home/your/Downloads/humanid/")
library(devtools)
build()
install()

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A basic example to use this package:

Do DEGs analysis by five steps

lapply(c('humanid','GEOquery','hugene10sttranscriptcluster.db'),function(x) library(x,character.only = T))
studyID <- 'GSE42872'
eSet<-GEOquery::getGEO(studyID, destdir='./',getGPL= F)
## you'd check the pdata(eSet) manually 
exprSet<-get_symbol_exprSet(eSet[[1]],'hugene10sttranscriptcluster.db')
QCexpressionMatrix(exprSet = exprSet,group_list =c(1,1,1,0,0,0) ,prefix =studyID )
createGSEAinput(prefix =studyID ,exprSet,group_list =c(1,1,1,0,0,0))
DEG <-do_DEG_2groups(prefix =studyID ,
                     exprSet= exprSet,
                     group_list=c(1,1,1,0,0,0),
                     method='limma')
DEG$symbol<-rownames(DEG);
format_DEG(DEG,prefix =studyID ,GOstats = T) 
## it will take about 10 minutes, you can set the GOstats = F to speed up this process.

geneAnno(kegg2GeneID[['01212']],file = T,prefix = as.character(kegg2name['01212','pathway_name']) )

## this is a test, don't run it.
source("https://bioconductor.org/biocLite.R")
biocLite("zebrafishRNASeq")
library(zebrafishRNASeq)
data(zfGenes)
head(zfGenes)
spikes <- zfGenes[grep("^ERCC", rownames(zfGenes)),]
head(spikes)

## below is the example code.

library(CLL)
data(sCLLex)
group_list=sCLLex$Disease
QCexpressionMatrix(example_exprSet,group_list)
batch_pheatmap(example_exprSet,group_list,name=F,genesets=enzyme_genesets)

rm(list=ls())
library(humanid)
library(GEOquery)
library(affy)
library(limma)
old_wd='G:/array/GSE34824'
setwd(old_wd)
studyID='GSE34824';
studyID_probe=paste0(studyID,'_probe')
studyID_gene=paste0(studyID,'_gene')

R_history_data <- paste0(studyID,'.Rdata')
if ( file.exists(R_history_data)){
  load( R_history_data )
}else{
  eSet <-  downGSE(studyID)
  save.image( R_history_data )
}

exprSet=exprs(eSet[[1]])
pdata=pData(eSet[[1]])

treatment=factor(unlist(lapply( pdata$characteristics_ch1.3 ,function(x) strsplit(as.character(x),": ")[[1]][2]))) 
treatment=relevel(treatment,'wt')

## we just need to compare the K27M to the WT samples.

choose_eSet = eSet[[1]][,treatment %in% c('K27M','wt') ]
exprSet=exprs( choose_eSet )
pdata=pData( choose_eSet )

treatment=factor(unlist(lapply( pdata$characteristics_ch1.3 ,function(x) strsplit(as.character(x),": ")[[1]][2]))) 
treatment=relevel(treatment,'wt')

## create gct file and cls file for GSEA 
createGSEAinput(studyID , exprSet,treatment) 
group_list = treatment


## create a new folder to store the DEG results based on probeset ID 
setwd(old_wd)
if ( ! file.exists('basedonProbe') )
  dir.create('basedonProbe')

setwd('basedonProbe') 
studyID <- studyID_probe
if(T){  
  
  exprSet <- exprs(choose_eSet);dim(exprSet)
  exprSet <- na.omit(exprSet);dim(exprSet)
  #exprSet=as.data.frame(exprSet);dim(exprSet)
  exprSet <- na.omit(exprSet);dim(exprSet)
  if( mean(rowMeans( exprSet ,na.rm = T),na.rm = T) >20)
    exprSet=log2(exprSet) ## based on 2;
  dim(exprSet)
  
  
  QCexpressionMatrix(exprSet, group_list, project = studyID)
  
  library(limma)
  design=model.matrix(~ group_list )
  fit=lmFit(exprSet,design)
  fit=eBayes(fit)
  options(digits = 4)
  DEG <- topTable(fit,coef=2,adjust='BH',n=Inf) ;dim(DEG)
  
  DEG$probe_id = rownames(DEG)
  library(hgu133plus2.db)
  probe2symbol_df <- AnnotationDbi::toTable(hgu133plus2SYMBOL)
  DEG <- merge(probe2symbol_df,DEG,by='probe_id');dim(DEG)
  format_DEG(DEG,studyID)
  
}

setwd(old_wd)
if ( ! file.exists('basedonGene') )
  dir.create('basedonGene')

setwd('basedonGene')
studyID <- studyID_gene

exprSet <- get_symbol_exprSet(choose_eSet)
exprSet <- na.omit(exprSet )
QCexpressionMatrix(exprSet, group_list, project = studyID)

library(limma)
design=model.matrix(~ group_list )
fit=lmFit(exprSet,design)
fit=eBayes(fit)
options(digits = 4)

DEG <- topTable(fit,coef=2,adjust='BH',n=Inf)
Volcanic_DEG(DEG)
DEG$symbol <- rownames(DEG)

format_DEG(DEG,studyID)

setwd('test')
input.ds.file = 'input/test.gct'
input.cls.file= 'input/test.cls'
gs.db.file= 'input/c2.MESENCHYMAL.v5.2.symbols.gmt'
output.directory = 'results/'
GSEA(input.ds =  input.ds.file,input.cls =input.cls.file ,gs.db = gs.db.file ,output.directory='./', reshuffling.type      = "gene.labels")