Render Labelwrap Row Gap

Gallery / Inter-section Routing

A QC section whose lower row crowds `sambamba markdup` against `RNA-SeQC` and a dir-icon terminus. The two-word name wraps at its space onto `sambamba` / `markdup` rather than splitting mid-word into a hyphen the tool name never carried (issue #1768), while single-token `RNA-SeQC` stays whole on one line. That wrap clears the crowding on its own: the spacing search widens neither the column nor the row pitch, and the QC box is drawn at the depth layout reserved for it, so the sections stacked below it keep their gap without being pushed down.

Mermaid source

%%metro title: label-wrap row gap
%%metro style: dark
%%metro dir: metrics_out | RNA-SeQC
%%metro file: sexcheck_out | TSV | Sex check
%%metro line: qc | QC | #e6550d
%%metro line: quant | Quantification | #0570b0
%%metro line: fusion | Fusion detection | #38b927

graph LR
    subgraph align_sec [Alignment]
        reads_in[ ]
        bbduk[BBDuk trim]
        star[STAR 2-pass]
        cram_out[ ]

        reads_in -->|qc,quant,fusion| bbduk
        bbduk -->|qc,quant,fusion| star
        star -->|qc,quant,fusion| cram_out
    end

    subgraph qc_sec [QC]
        flagstat[flagstat + mosdepth]
        markdup[sambamba markdup]
        rnaseqc[RNA-SeQC]
        sexcheck_out[ ]
        metrics_out[ ]

        star -->|qc| flagstat
        flagstat -->|qc| sexcheck_out
        star -->|qc| markdup
        markdup -->|qc| rnaseqc
        rnaseqc -->|qc| metrics_out
    end

    subgraph quant_sec [Quantification]
        rsem[RSEM]
        geneann[Gene annotation]
        expr_out[ ]

        star -->|quant| rsem
        rsem -->|quant| geneann
        geneann -->|quant| expr_out
    end

    subgraph fusion_sec [Fusion detection]
        arriba[Arriba]
        starfusion[STAR-Fusion]
        fusions_out[ ]

        star -->|fusion| arriba
        arriba -->|fusion| starfusion
        starfusion -->|fusion| fusions_out
    end

CLI command

nf-metro render examples/topologies/render_labelwrap_row_gap.mmd -o render_labelwrap_row_gap.svg

Rendered map