Chart Compiler Gallery
ChartSpec data compiles into resolved scales, layer specs, glyph definitions, scene graph nodes, and a single SVG renderer.
Gantt Chart
Task rows derive normalized interval geometry before rect marks render the schedule.
Data Sources
7
Fields
13
Scales
3
Layers
10
Glyphs
45
line 21 / rect 6 / text 18
Data Flow Diagram
Select a glyph to highlight its complete source path.
Scope
Roles
No matching flow nodes
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Available Data
Raw task intervals
ChartSpec
{
"id": "catalogue.gantt",
"data": [
{
"id": "tasks",
"rows": 6
},
{
"id": "milestones",
"rows": 1
},
{
"id": "intervals",
"rows": 6
},
{
"id": "__guide.x-grid",
"rows": 6
},
{
"id": "__guide.y-grid",
"rows": 6
},
{
"id": "__guide.x",
"rows": 6
},
{
"id": "__guide.y",
"rows": 6
}
],
"transforms": [
{
"id": "task-intervals",
"type": "interval",
"input": "tasks",
"output": "intervals",
"options": {
"startField": "startDate",
"endField": "endDate",
"labelField": "task",
"unit": "day"
}
}
],
"axes": [
{
"id": "x",
"scale": "x",
"orientation": "bottom",
"tickFormat": {
"style": "date"
}
},
{
"id": "y",
"scale": "y",
"orientation": "left"
}
],
"grids": [
{
"id": "x-grid",
"scale": "x",
"orientation": "x"
},
{
"id": "y-grid",
"scale": "y",
"orientation": "y"
}
],
"fields": [
"task",
"phase",
"status",
"start",
"end",
"duration",
"durationLabel",
"tooltip",
"startDate",
"endDate",
"value",
"label",
"center"
],
"scales": [
{
"id": "x",
"type": "time",
"domain": {
"source": "field",
"data": "intervals",
"field": "start",
"fields": [
"start",
"end"
],
"padding": 0.02
}
},
{
"id": "y",
"type": "band",
"domain": {
"source": "field",
"data": "intervals",
"field": "task"
}
},
{
"id": "color",
"type": "ordinal",
"domain": {
"source": "field",
"data": "intervals",
"field": "status"
}
}
],
"layers": [
{
"id": "x-grid",
"mark": "line",
"role": "guide"
},
{
"id": "y-grid",
"mark": "line",
"role": "guide"
},
{
"id": "x-axis",
"mark": "line",
"role": "guide"
},
{
"id": "x-tick-marks",
"mark": "line",
"role": "guide"
},
{
"id": "x-labels",
"mark": "text",
"role": "guide"
},
{
"id": "y-axis",
"mark": "line",
"role": "guide"
},
{
"id": "y-labels",
"mark": "text",
"role": "guide"
},
{
"id": "milestone-lines",
"mark": "line",
"role": "guide"
},
{
"id": "interval-bars",
"mark": "rect",
"role": "data"
},
{
"id": "duration-labels",
"mark": "text",
"role": "guide"
}
]
}Resolved SceneGraph
{
"scene": "catalogue.gantt.scene",
"scales": [
{
"id": "x",
"type": "time",
"domain": [
"2026-01-03",
"2026-04-01"
],
"range": [
118,
726
],
"ticks": [
1767398400000,
1768919040000,
1770439680000,
1771960320000,
1773480960000,
1775001600000
]
},
{
"id": "y",
"type": "band",
"domain": [
"Discovery",
"Data audit",
"Compiler gaps",
"Gallery update",
"Visual QA",
"Documentation"
],
"range": [
26,
304
],
"bandwidth": 35.21333333333334
},
{
"id": "color",
"type": "ordinal",
"domain": [
"Done",
"Active",
"Queued"
],
"range": [
"var(--colors-green-9)",
"var(--colors-blue-9)",
"var(--colors-amber-9)"
]
}
],
"layers": [
{
"id": "x-grid",
"role": "guide",
"zIndex": 0,
"glyphs": 6
},
{
"id": "y-grid",
"role": "guide",
"zIndex": 0,
"glyphs": 6
},
{
"id": "x-axis",
"role": "guide",
"zIndex": 0,
"glyphs": 1
},
{
"id": "y-axis",
"role": "guide",
"zIndex": 0,
"glyphs": 1
},
{
"id": "x-tick-marks",
"role": "guide",
"zIndex": 5,
"glyphs": 6
},
{
"id": "milestone-lines",
"role": "guide",
"zIndex": 6,
"glyphs": 1
},
{
"id": "interval-bars",
"role": "data",
"zIndex": 10,
"glyphs": 6
},
{
"id": "x-labels",
"role": "guide",
"zIndex": 20,
"glyphs": 6
},
{
"id": "y-labels",
"role": "guide",
"zIndex": 20,
"glyphs": 6
},
{
"id": "duration-labels",
"role": "guide",
"zIndex": 20,
"glyphs": 6
}
]
}Glyph Data Tree
Full parameter lineage for the active compiler surface.
x-grid
y-grid
x-axis
y-axis
x-tick-marks
milestone-lines
interval-bars
x-labels
y-labels
duration-labels
Glyph Inspector
Select a glyph in the chart to inspect resolved params and lineage.