Faceted Plot

faceted

advanced

Small multiples showing data split by category

Faceted plots (small multiples) split data into separate panels by one or more categorical variables. This makes it easy to compare patterns across groups.

Code

SELECT bill_len, bill_dep, species FROM ggsql:penguins
VISUALISE bill_len AS x, bill_dep AS y
DRAW point
FACET species
LABEL
    title => 'Bill Dimensions by Species',
    x => 'Bill Length (mm)',
    y => 'Bill Depth (mm)'

Explanation

FACET species creates a separate panel for each penguin species
Each panel shows the same scatter plot, filtered to that species
This reveals species-specific patterns that might be hidden in a combined view

Variations

Grid Layout with Two Variables

Use FACET rows BY cols to create a grid layout:

SELECT bill_len, bill_dep, species, island FROM ggsql:penguins
VISUALISE bill_len AS x, bill_dep AS y
DRAW point
FACET species BY island
LABEL
    title => 'Bill Dimensions by Species and Island',
    x => 'Bill Length (mm)',
    y => 'Bill Depth (mm)'

Free Scales

Allow each facet to have independent axis scales with SETTING free:

SELECT bill_len, bill_dep, species FROM ggsql:penguins
VISUALISE bill_len AS x, bill_dep AS y
DRAW point
FACET species SETTING free => 'y'
LABEL
    title => 'Bill Dimensions (Free Y Scale)',
    x => 'Bill Length (mm)',
    y => 'Bill Depth (mm)'