createSVMinput: Take the output of findFeatureOverlap and then create a...

In SVM2CRM: SVM2CRM: support vector machine for cis-regulatory elements detections

Description

Take the output of findFeatureOverlap and then create a positive and negative set of cis-regulatory elements

Usage

     createSVMinput(inputpos,inputfull,label1,label2)

Arguments

inputpos	output of findFeatureOverlap (see documentation findFeatureOverlap)
inputfull	output of cisREfindbed (see documentation cisREfinbed)
label1	a string to define the first class (e.g. enhancers)
label2	a string to define the second class (e.g. not_enhancers)

Details

Some detailled description

Value

A data.frame with the signals of the histone modifications for positive (e.g. enhancers) and negative (e.g. not_enhancers) examples.

Author(s)

Guidantonio Malagoli Tagliazucchi [e-mail]

See Also

findFeatureOverlap, cisREfindbed

Examples

    library("SVM2CRMdata")
    library("GenomicRanges")

    setwd(system.file("data",package="SVM2CRMdata"))
    load("CD4_matrixInputSVMbin100window1000.rda")
    completeTABLE<-CD4_matrixInputSVMbin100window1000

    new.strings<-gsub(x=colnames(completeTABLE[,c(6:ncol(completeTABLE))]),pattern="CD4.",replacement="")
    new.strings<-gsub(new.strings,pattern=".norm.w100.bed",replacement="")
    colnames(completeTABLE)[c(6:ncol(completeTABLE))]<-new.strings

    #list_file<-grep(dir(),pattern=".sort.txt",value=TRUE)
    #train_positive<-getSignal(list_file,chr="chr1",reference="p300.distal.fromTSS.txt",win.size=500,bin.size=100,label1="enhancers")
    #train_negative<-getSignal(list_file,chr="chr1",reference="random.region.hg18.nop300.txt",win.size=500,bin.size=100,label1="not_enhancers")
    setwd(system.file("data",package="SVM2CRMdata"))
    load("train_positive.rda")
    load("train_negative.rda")

    training_set<-rbind(train_positive,train_negative)
    colnames(training_set)[c(5:ncol(training_set))]<-gsub(x=gsub(x=colnames(training_set[,c(5:ncol(training_set))]),pattern="sort.txt.",replacement=""),pattern="CD4.",replacement="")
 
    setwd(system.file("extdata",package="SVM2CRMdata"))
    data_level2 <- read.table(file = "GSM393946.distal.p300fromTSS.txt",sep = "\t", stringsAsFactors = FALSE)
    data_level2<-data_level2[data_level2[,1]=="chr1",]

    DB <- data_level2[, c(1:3)]
    colnames(DB)<-c("chromosome","start","end")

    label <- "p300"

    table.final.overlap<-findFeatureOverlap(query=completeTABLE,subject=DB)
    data_enhancer_svm<-createSVMinput(inputpos=table.final.overlap,inputfull=completeTABLE,label1="enhancers",label2="not_enhancers")

SVM2CRM documentation built on May 11, 2019, 2 a.m.