Cellbender empty droplet removal

subworkflows/nf-core/cellbender_empty_droplet_removal/main.nf

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+//
+// cellbender remove background and empty droplet detection and removal
+//
+include { CELLBENDER_REMOVEBACKGROUND } from '../../../modules/nf-core/cellbender/removebackground'
+include { ANNDATA_BARCODES            } from '../../../modules/nf-core/anndata/barcodes'
+
+workflow CELLBENDER_EMPTY_DROPLET_REMOVAL {
+
+    take:
+    ch_unfiltered
+
+    main:
+    ch_versions = Channel.empty()
+
+    CELLBENDER_REMOVEBACKGROUND(ch_unfiltered)
+    ch_versions = ch_versions.mix(CELLBENDER_REMOVEBACKGROUND.out.versions)
+
+    ch_combined = ch_unfiltered.join(CELLBENDER_REMOVEBACKGROUND.out.barcodes)
+
+    ANNDATA_BARCODES(ch_combined)
+    ch_versions = ch_versions.mix(ANNDATA_BARCODES.out.versions)
+
+    ch_h5ad = ANNDATA_BARCODES.out.h5ad
+
+    emit:
+    h5ad = ch_h5ad
+
+    versions = ch_versions
+}
+

subworkflows/nf-core/cellbender_empty_droplet_removal/meta.yml

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+name: "cellbender_empty_droplet_removal"
+description: Use features of Cellbender to remove background noise and empty droplet
+keywords:
+  - scdownstream
+  - cellbender
+  - anndata
+components:
+  - cellbender/removebackground
+  - anndata/barcodes
+input:
+  - ch_unfiltered:
+      type: file
+      description: |
+        The input channel containing the unfiltered AnnData file to process
+        and remove background noise and empty droplets
+        Structure: [ val(meta), path(h5ad) ]
+      pattern: "*.h5ad"
+output:
+  - h5ad:
+      description: |
+        Background and empty droplet removed AnnData file containing cells with
+        barcodes exceeding 0.5 posterior cell probability determined by the
+        cellbender's remove-background
+        Structure: [ val(meta), path(h5ad) ]
+      pattern: "*.h5ad"
+  - versions:
+      type: file
+      description: |
+        File containing software versions
+      pattern: "versions.yml"
+authors:
+  - "@nictru"
+  - "@chaochaowong"
+maintainers:
+  - "@nictru"

subworkflows/nf-core/cellbender_empty_droplet_removal/tests/main.nf.test

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+nextflow_workflow {
+
+    name "Test Subworkflow CELLBENDER_EMPTY_DROPLET_REMOVAL"
+    script "../main.nf"
+    workflow "CELLBENDER_EMPTY_DROPLET_REMOVAL"
+
+    tag "subworkflows"
+    tag "subworkflows_nfcore"
+    tag "subworkflows/cellbender_empty_droplet_removal"
+    tag "cellbender/removebackground"
+    tag "anndata/barcodes"
+
+    test("test_cellbender_empty_droplet_removal") {
+
+        when {
+            workflow {
+                """
+                input[0] = Channel.of([
+                    [ id:'test' ], // meta map
+                    file("https://raw.githubusercontent.com/nf-core/test-datasets/scdownstream/samples/SAMN14430799_raw_matrix_5k.h5ad", checkIfExists: true)
+                ])
+                """
+            }
+        }
+        then {
+            assertAll(
+                { assert workflow.success},
+                { assert snapshot(workflow.out).match()}
+            )
+        }
+    }
+}

subworkflows/nf-core/cellbender_empty_droplet_removal/tests/main.nf.test.snap

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+{
+    "test_cellbender_empty_droplet_removal": {
+        "content": [
+            {
+                "0": [
+                    [
+                        {
+                            "id": "test"
+                        },
+                        "test.h5ad:md5,63fce875b59271df44ccab6a576b4fbf"
+                    ]
+                ],
+                "1": [
+                    "versions.yml:md5,494215861200dfa70967903c538e1373",
+                    "versions.yml:md5,f10a2756669240175ffeba278fca7229"
+                ],
+                "h5ad": [
+                    [
+                        {
+                            "id": "test"
+                        },
+                        "test.h5ad:md5,63fce875b59271df44ccab6a576b4fbf"
+                    ]
+                ],
+                "versions": [
+                    "versions.yml:md5,494215861200dfa70967903c538e1373",
+                    "versions.yml:md5,f10a2756669240175ffeba278fca7229"
+                ]
+            }
+        ],
+        "meta": {
+            "nf-test": "0.9.0",
+            "nextflow": "24.10.0"
+        },
+        "timestamp": "2024-11-19T09:05:51.427525038"
+    }
+}