Line Spread

Gallery / Feature Showcase

Demonstrates the `%%metro line_spread:` axis with one per-section override per section: `bundle` (default) merges shared lines onto one trunk that cascades downward, `centered` balances that bundle about the midline, and `rails` draws each line as a parallel rail with shared stations as interchanges.

Mermaid source

%%metro title: Line spread modes
%%metro style: dark
%%metro line: dna | DNA | #4CAF50
%%metro line: rna | RNA | #2196F3
%%metro line: cfdna | cfDNA | #E91E63

%%metro line_spread: bundle
%%metro line_spread: centered | centered_sec
%%metro line_spread: rails | rails_sec

%% Rail panel input/output files: the rails fan out from the CRAM terminus and
%% fan back in to the VCF terminus (a fan-in), each meeting a buffer-stop marker.
%% rna skips Filter, so Filter is a partial interchange: the rna rail bridges
%% straight over its connector rather than stopping there.
%%metro file: r_in | CRAM
%%metro file: r_out | VCF

%%metro grid: bundle_sec | 0,0
%%metro grid: centered_sec | 1,0
%%metro grid: rails_sec | 2,0

graph LR
    subgraph bundle_sec [bundle]
        b_in[Input]
        b_dna[DNA]
        b_rna[RNA]
        b_cf[cfDNA]
        b_out[QC]

        b_in -->|dna| b_dna
        b_in -->|rna| b_rna
        b_in -->|cfdna| b_cf
        b_dna -->|dna| b_out
        b_rna -->|rna| b_out
        b_cf -->|cfdna| b_out
    end

    subgraph centered_sec [centered]
        c_in[Align]
        c_dna[DNA]
        c_rna[RNA]
        c_cf[cfDNA]
        c_out[Merge]

        c_in -->|dna| c_dna
        c_in -->|rna| c_rna
        c_in -->|cfdna| c_cf
        c_dna -->|dna| c_out
        c_rna -->|rna| c_out
        c_cf -->|cfdna| c_out
    end

    subgraph rails_sec [rails]
        r_in[ ]
        r_call[Call]
        r_filter[Filter]
        r_annotate[Annotate]
        r_out[ ]

        r_in -->|dna,rna,cfdna| r_call
        r_call -->|dna,cfdna| r_filter
        r_call -->|rna| r_annotate
        r_filter -->|dna,cfdna| r_annotate
        r_annotate -->|dna,rna,cfdna| r_out
    end

    b_out -->|dna,rna,cfdna| c_in

CLI command

nf-metro render examples/line_spread.mmd -o line_spread.svg

Rendered map