diff --git a/workflow/main.nf b/workflow/main.nf
index 4fa5d9f62bc75b3c283f39a07e1f8e849a294bef..bb90254ace37a6ba2ac9dc34be79cba7de371d94 100644
--- a/workflow/main.nf
+++ b/workflow/main.nf
@@ -1,379 +1,139 @@
#!/usr/bin/env nextflow
-
-// Path to an input file, or a pattern for multiple inputs
-// Note - $baseDir is the location of this workflow file main.nf
-
-// Define Input variables
-params.reads = "$baseDir/../test_data/*.fastq.gz"
-params.pairedEnd = false
-params.designFile = "$baseDir/../test_data/design_ENCSR238SGC_SE.txt"
-params.genome = 'GRCm38'
-params.genomes = []
-params.bwaIndex = params.genome ? params.genomes[ params.genome ].bwa ?: false : false
-params.genomeSize = params.genome ? params.genomes[ params.genome ].genomesize ?: false : false
-params.chromSizes = params.genome ? params.genomes[ params.genome ].chromsizes ?: false : false
-params.cutoffRatio = 1.2
-
-// Check inputs
-if( params.bwaIndex ){
- bwaIndex = Channel
- .fromPath(params.bwaIndex)
- .ifEmpty { exit 1, "BWA index not found: ${params.bwaIndex}" }
-} else {
- exit 1, "No reference genome specified."
-}
-
-// Define List of Files
-readsList = Channel
- .fromPath( params.reads )
- .flatten()
- .map { file -> [ file.getFileName().toString(), file.toString() ].join("\t")}
- .collectFile( name: 'fileList.tsv', newLine: true )
-
-// Define regular variables
-pairedEnd = params.pairedEnd
-designFile = params.designFile
-genomeSize = params.genomeSize
-chromSizes = params.chromSizes
-cutoffRatio = params.cutoffRatio
-
-process checkDesignFile {
-
- publishDir "$baseDir/output/design", mode: 'copy'
-
- input:
-
- designFile
- file readsList
-
- output:
-
- file("design.tsv") into designFilePaths
-
- script:
-
- if (pairedEnd) {
- """
- python3 $baseDir/scripts/check_design.py -d $designFile -f $readsList -p
- """
- }
- else {
- """
- python $baseDir/scripts/check_design.py -d $designFile -f $readsList
- """
- }
-
-}
-
-// Define channel for raw reads
-if (pairedEnd) {
- rawReads = designFilePaths
- .splitCsv(sep: '\t', header: true)
- .map { row -> [ row.sample_id, [row.fastq_read1, row.fastq_read2], row.experiment_id, row.biosample, row.factor, row.treatment, row.replicate, row.control_id ] }
-} else {
-rawReads = designFilePaths
- .splitCsv(sep: '\t', header: true)
- .map { row -> [ row.sample_id, [row.fastq_read1], row.experiment_id, row.biosample, row.factor, row.treatment, row.replicate, row.control_id ] }
-}
-
-// Trim raw reads using trimgalore
-process trimReads {
-
- tag "$sampleId-$replicate"
- publishDir "$baseDir/output/${task.process}", mode: 'copy'
-
- input:
-
- set sampleId, reads, experimentId, biosample, factor, treatment, replicate, controlId from rawReads
-
- output:
-
- set sampleId, file('*.fq.gz'), experimentId, biosample, factor, treatment, replicate, controlId into trimmedReads
- file('*trimming_report.txt') into trimgalore_results
-
- script:
-
- if (pairedEnd) {
- """
- python3 $baseDir/scripts/trim_reads.py -f ${reads[0]} ${reads[1]} -p
- """
- }
- else {
- """
- python3 $baseDir/scripts/trim_reads.py -f ${reads[0]}
- """
- }
-
+ params.design="$baseDir/../test_data/samplesheet.csv"
+ params.bams = "$baseDir/../test_data/*.bam"
+ params.peaks = "$baseDir/../test_data/*.broadPeak"
+ params.genomepath="/project/shared/bicf_workflow_ref/GRCh37"
+ toppeakcount = -1
+ design_file = file(params.design)
+ deeptools_design = Channel.fromPath(params.design)
+ diffbind_design = Channel.fromPath(params.design)
+ chipseeker_design = Channel.fromPath(params.design)
+ meme_design = Channel.fromPath(params.design)
+ index_bams = Channel.fromPath(params.bams)
+ deeptools_bams = Channel.fromPath(params.bams)
+ deeptools_peaks = Channel.fromPath(params.peaks)
+ chipseeker_peaks = Channel.fromPath(params.peaks)
+ diffbind_bams = Channel.fromPath(params.bams)
+ diffbind_peaks = Channel.fromPath(params.peaks)
+ meme_peaks = Channel.fromPath(params.peaks)
+
+process bamindex {
+ publishDir "$baseDir/output/", mode: 'copy'
+ input:
+ file index_bam_files from index_bams
+ output:
+ file "*bai" into deeptools_bamindex
+ file "*bai" into diffbind_bamindex
+
+ script:
+ """
+ module load python/2.7.x-anaconda
+ module load R/3.3.2-gccmkl
+ module load samtools/intel/1.3
+ samtools index $index_bam_files
+ """
}
-// Align trimmed reads using bwa
-process alignReads {
-
- tag "$sampleId-$replicate"
- publishDir "$baseDir/output/${task.process}", mode: 'copy'
-
- input:
-
- set sampleId, reads, experimentId, biosample, factor, treatment, replicate, controlId from trimmedReads
- file index from bwaIndex.first()
-
- output:
-
- set sampleId, file('*.bam'), experimentId, biosample, factor, treatment, replicate, controlId into mappedReads
- file '*.srt.bam.flagstat.qc' into mappedReadsStats
-
- script:
-
- if (pairedEnd) {
- """
- python3 $baseDir/scripts/map_reads.py -f ${reads[0]} ${reads[1]} -r ${index}/genome.fa -p
- """
- }
- else {
- """
- python3 $baseDir/scripts/map_reads.py -f $reads -r ${index}/genome.fa
- """
- }
-
-}
-
-// Dedup reads using sambamba
-process filterReads {
-
- tag "$sampleId-$replicate"
- publishDir "$baseDir/output/${task.process}", mode: 'copy'
-
- input:
-
- set sampleId, mapped, experimentId, biosample, factor, treatment, replicate, controlId from mappedReads
-
- output:
-
- set sampleId, file('*.bam'), file('*.bai'), experimentId, biosample, factor, treatment, replicate, controlId into dedupReads
- set sampleId, file('*.bam'), experimentId, biosample, factor, treatment, replicate, controlId into convertReads
- file '*flagstat.qc' into dedupReadsStats
- file '*pbc.qc' into dedupReadsComplexity
- file '*dup.qc' into dupReads
-
- script:
-
- if (pairedEnd) {
- """
- python3 $baseDir/scripts/map_qc.py -b $mapped -p
- """
- }
- else {
- """
- python3 $baseDir/scripts/map_qc.py -b $mapped
- """
- }
-
-}
-
-// Define channel collecting dedup reads into new design file
-dedupReads
-.map{ sampleId, bam, bai, experimentId, biosample, factor, treatment, replicate, controlId ->
-"$sampleId\t$bam\t$bai\t$experimentId\t$biosample\t$factor\t$treatment\t$replicate\t$controlId\n"}
-.collectFile(name:'design_dedup.tsv', seed:"sample_id\tbam_reads\tbam_index\texperiment_id\tbiosample\tfactor\ttreatment\treplicate\tcontrol_id\n", storeDir:"$baseDir/output/design")
-.into { dedupDesign; preDiffDesign }
-
-// Quality Metrics using deeptools
-process experimentQC {
-
- publishDir "$baseDir/output/${task.process}", mode: 'copy'
-
- input:
-
- file dedupDesign
-
- output:
-
- file '*.{png,npz}' into deepToolsStats
-
- script:
-
- """
- python3 $baseDir/scripts/experiment_qc.py -d $dedupDesign
- """
-
+process run_deeptools {
+ publishDir "$baseDir/output", mode: 'copy'
+ input:
+ file deeptools_design_file from deeptools_design
+ file deeptools_bam_files from deeptools_bams.toList()
+ file deeptools_peak_files from deeptools_peaks.toList()
+ file deeptools_bam_indexes from deeptools_bamindex.toList()
+ output:
+ file "*deeptools*" into deeptools_output
+ script:
+ """
+ module load python/2.7.x-anaconda
+ module load R/3.3.2-gccmkl
+ module load deeptools/2.3.5
+ python $baseDir/scripts/runDeepTools.py -i ${params.design} -g ${params.genomepath}}
+"""
}
-// Convert reads to bam
-process convertReads {
-
- tag "$sampleId-$replicate"
- publishDir "$baseDir/output/${task.process}", mode: 'copy'
-
- input:
-
- set sampleId, deduped, experimentId, biosample, factor, treatment, replicate, controlId from convertReads
-
- output:
-
- set sampleId, file('*.tagAlign.gz'), file('*.bed{pe,se}.gz'), experimentId, biosample, factor, treatment, replicate, controlId into tagReads
-
- script:
-
- if (pairedEnd) {
- """
- python3 $baseDir/scripts/convert_reads.py -b $deduped -p
- """
- }
- else {
- """
- python3 $baseDir/scripts/convert_reads.py -b $deduped
- """
- }
+process run_diffbind {
+ publishDir "$baseDir/output", mode: 'copy'
+ input:
+ file diffbind_design_file from diffbind_design
+ file diffbind_bam_files from diffbind_bams.toList()
+ file diffbind_peak_files from diffbind_peaks.toList()
+ file diffbind_bam_indexes from diffbind_bamindex.toList()
+ output:
+ file "diffpeak.design" into diffpeaksdesign_chipseeker
+ file "diffpeak.design" into diffpeaksdesign_meme
+ file "*_diffbind.bed" into diffpeaks_meme
+ file "*_diffbind.bed" into diffpeaks_chipseeker
+ script:
+ """
+ module load python/2.7.x-anaconda
+ module load R/3.3.2-gccmkl
+ Rscript $baseDir/scripts/runDiffBind.R $diffbind_design_file
+"""
}
-// Calculate Cross-correlation using phantompeaktools
-process crossReads {
-
- tag "$sampleId-$replicate"
- publishDir "$baseDir/output/${task.process}", mode: 'copy'
-
- input:
-
- set sampleId, seTagAlign, tagAlign, experimentId, biosample, factor, treatment, replicate, controlId from tagReads
-
- output:
-
- set sampleId, seTagAlign, tagAlign, file('*.cc.qc'), experimentId, biosample, factor, treatment, replicate, controlId into xcorReads
- set file('*.cc.qc'), file('*.cc.plot.pdf') into xcorReadsStats
-
- script:
-
- if (pairedEnd) {
- """
- python3 $baseDir/scripts/xcor.py -t $seTagAlign -p
- """
- }
- else {
- """
- python3 $baseDir/scripts/xcor.py -t $seTagAlign
- """
- }
-
+process run_chipseeker_diffpeak {
+ publishDir "$baseDir/output", mode: 'copy'
+ input:
+ file diffpeak_design_file from diffpeaksdesign_chipseeker
+ file diffpeaks from diffpeaks_chipseeker
+ output:
+ file "*chipseeker*" into chipseeker_diffpeak_output
+ script:
+ """
+ module load python/2.7.x-anaconda
+ module load R/3.3.2-gccmkl
+ Rscript $baseDir/scripts/runChipseeker.R $diffpeak_design_file ${params.genomepath}
+"""
}
-// Define channel collecting tagAlign and xcor into design file
-xcorDesign = xcorReads
- .map{ sampleId, seTagAlign, tagAlign, xcor, experimentId, biosample, factor, treatment, replicate, controlId ->
- "$sampleId\t$seTagAlign\t$tagAlign\t$xcor\t$experimentId\t$biosample\t$factor\t$treatment\t$replicate\t$controlId\n"}
- .collectFile(name:'design_xcor.tsv', seed:"sample_id\tse_tag_align\ttag_align\txcor\texperiment_id\tbiosample\tfactor\ttreatment\treplicate\tcontrol_id\n", storeDir:"$baseDir/output/design")
-
-// Make Experiment design files to be read in for downstream analysis
-process defineExpDesignFiles {
-
- publishDir "$baseDir/output/design", mode: 'copy'
-
- input:
-
- file xcorDesign
-
- output:
-
- file '*.tsv' into experimentObjs mode flatten
-
- script:
-
- """
- python3 $baseDir/scripts/experiment_design.py -d $xcorDesign
- """
-
+process run_chipseeker_originalpeak {
+ publishDir "$baseDir/output", mode: 'copy'
+ input:
+ file design_file from chipseeker_design
+ file chipseeker_peak_files from chipseeker_peaks.toList()
+ output:
+ file "*chipseeker*" into chipseeker_originalpeak_output
+ script:
+ """
+ module load python/2.7.x-anaconda
+ module load R/3.3.2-gccmkl
+ Rscript $baseDir/scripts/runChipseeker.R $design_file ${params.genomepath}
+"""
}
-
-// Make Experiment design files to be read in for downstream analysis
-process poolAndPsuedoReads {
-
-
- tag "${experimentObjs.baseName}"
- publishDir "$baseDir/output/design", mode: 'copy'
-
- input:
-
- file experimentObjs
-
- output:
-
- file '*.tsv' into experimentPoolObjs
-
- script:
-
- if (pairedEnd) {
- """
- python3 $baseDir/scripts/pool_and_psuedoreplicate.py -d $experimentObjs -c $cutoffRatio -p
- """
- }
- else {
- """
- python3 $baseDir/scripts/pool_and_psuedoreplicate.py -d $experimentObjs -c $cutoffRatio
- """
- }
-
+process run_meme_original {
+ publishDir "$baseDir/output", mode: 'copy'
+ input:
+ file design_meme from meme_design
+ file meme_peak_files from meme_peaks.toList()
+ output:
+ file "*meme*" into meme_original_output
+ script:
+ """
+ module load python/2.7.x-anaconda
+ module load R/3.3.2-gccmkl
+ module add deeptools/2.3.5
+ module load meme/4.11.1-gcc-openmpi
+ python $baseDir/scripts/runMemechip.py -i $design_meme -g ${params.genomepath} -l ${toppeakcount}
+"""
}
-// Collect list of experiment design files into a single channel
-experimentRows = experimentPoolObjs
- .splitCsv(sep:'\t', header:true)
- .map { row -> [ row.sample_id, row.tag_align, row.xcor, row.experiment_id, row.biosample, row.factor, row.treatment, row.replicate, row.control_id, row.control_tag_align] }
-
-// Call Peaks using MACS
-process callPeaksMACS {
-
- tag "$sampleId-$replicate"
- publishDir "$baseDir/output/${task.process}", mode: 'copy'
-
- input:
- set sampleId, tagAlign, xcor, experimentId, biosample, factor, treatment, replicate, controlId, controlTagAlign from experimentRows
-
- output:
-
- set sampleId, file('*.narrowPeak'), file('*.fc_signal.bw'), file('*.pvalue_signal.bw'), experimentId, biosample, factor, treatment, replicate, controlId into experimentPeaks
-
- script:
-
- if (pairedEnd) {
- """
- python3 $baseDir/scripts/call_peaks_macs.py -t $tagAlign -x $xcor -c $controlTagAlign -s $sampleId -g $genomeSize -z $chromSizes -p
- """
- }
- else {
- """
- python3 $baseDir/scripts/call_peaks_macs.py -t $tagAlign -x $xcor -c $controlTagAlign -s $sampleId -g $genomeSize -z $chromSizes
- """
- }
-
+process run_meme_diffpeak {
+ publishDir "$baseDir/output", mode: 'copy'
+ input:
+ file peaks_meme from diffpeaks_meme
+ file diffpeak_design from diffpeaksdesign_meme
+ output:
+ file "*meme*" into meme_diffpeak_output
+ script:
+ """
+ module load python/2.7.x-anaconda
+ module load R/3.3.2-gccmkl
+ module add deeptools/2.3.5
+ module load meme/4.11.1-gcc-openmpi
+ python $baseDir/scripts/runMemechip.py -i $diffpeak_design -g ${params.genomepath} -l ${toppeakcount}
+"""
}
-// Define channel collecting peaks into design file
-peaksDesign = experimentPeaks
- .map{ sampleId, peak, fcSignal, pvalueSignal, experimentId, biosample, factor, treatment, replicate, controlId ->
- "$sampleId\t$peak\t$fcSignal\t$pvalueSignal\t$experimentId\t$biosample\t$factor\t$treatment\t$replicate\t$controlId\n"}
- .collectFile(name:'design_peak.tsv', seed:"sample_id\tpeaks\tfc_signal\tpvalue_signal\texperiment_id\tbiosample\tfactor\ttreatment\treplicate\tcontrol_id\n", storeDir:"$baseDir/output/design")
-
-// Calculate Consensus Peaks
-process consensusPeaks {
-
- publishDir "$baseDir/output/${task.process}", mode: 'copy'
-
- input:
-
- file peaksDesign
- file preDiffDesign
-
- output:
-
- file '*.replicated.*' into consensusPeaks
- file '*.rejected.*' into rejectedPeaks
- file("design_diffPeaks.tsv") into designDiffPeaks
-
- script:
-
- """
- python3 $baseDir/scripts/overlap_peaks.py -d $peaksDesign -f $preDiffDesign
- """
-
-}