kuva ridgeline
Ridgeline plot (joyplot) — stacked KDE density curves, one per group. Groups are taken from one column; values from another.
Input: a tabular file with at least one numeric column and an optional group column.
| Flag | Default | Description |
|---|---|---|
--value <COL> | 0 | Column of numeric values |
--y <COL>[,<COL>…] | — | Comma-separated columns; plots one ridge per column (column name = ridge label). Mutually exclusive with --group-by when 2+ columns given |
--group-by <COL> | — | Group by this column; one ridge per unique value |
--filled | on | Fill the area under each ridge curve |
--opacity <F> | 0.7 | Fill opacity |
--overlap <F> | 0.5 | Ridge overlap factor (0 = no overlap, 1 = full cell height) |
--bandwidth <F> | (Silverman) | KDE bandwidth override |
kuva ridgeline samples.tsv --group-by group --value expression \
--x-label "Expression" --y-label "Group" --title "Expression by group"
kuva ridgeline samples.tsv --group-by group --value expression --overlap 1.0
# multi-column: one ridge per column
kuva ridgeline data.tsv --y col_a,col_b,col_c --overlap 0.3
See also: Shared flags — output, appearance, axes, log scale.