Chart Compiler Gallery
ChartSpec data compiles into resolved scales, layer specs, glyph definitions, scene graph nodes, and a single SVG renderer.
Area Graph
Rebuilds the area chart with area and line paths, endpoint samples, and month guide labels.
Data Sources
6
Fields
8
Scales
2
Layers
11
Glyphs
53
rect 2 / line 21 / path 2 / text 26 / point 2
Build Path
This example is rebuilt from gallery data source points by recipe areaGraph: raw table rows -> TabularSource -> pipeline drafts -> analyzeAuthoringDrafts() -> materialized ChartSpec -> compileChart() -> SceneGraph -> SVG. The graph below shows the authored pipeline stage.
Pipeline recipe graph
Data Flow Diagram
Select a glyph to highlight its complete source path.
Scope
Roles
No matching flow nodes
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Available Data
Imported table
ChartSpec
{
"id": "gallery.areaGraph",
"data": [
{
"id": "source_gallery_areagraph",
"rows": 12
},
{
"id": "source_sampled",
"rows": 2
},
{
"id": "__guide.pipeline_xgrid_guide",
"rows": 7
},
{
"id": "__guide.pipeline_ygrid_guide",
"rows": 7
},
{
"id": "__guide.pipeline_xaxis_guide",
"rows": 7
},
{
"id": "__guide.pipeline_yaxis_guide",
"rows": 7
}
],
"transforms": [
{
"id": "pipeline_sampled_points_transform",
"type": "sample",
"input": "source_gallery_areagraph",
"output": "source_sampled",
"options": {
"count": 2,
"errorMethod": "standardError",
"fit": "contain",
"includeMax": true,
"layoutKind": "",
"layoutMode": "proportionalAngle",
"mode": "normal",
"order": [],
"orderField": "index"
}
}
],
"axes": [
{
"id": "pipeline_xaxis_guide",
"scale": "pipeline_index_x_x_scale",
"orientation": "bottom"
},
{
"id": "pipeline_yaxis_guide",
"scale": "pipeline_value_y_y_scale",
"orientation": "left"
}
],
"grids": [
{
"id": "pipeline_xgrid_guide",
"scale": "pipeline_index_x_x_scale",
"orientation": "x"
},
{
"id": "pipeline_ygrid_guide",
"scale": "pipeline_value_y_y_scale",
"orientation": "y"
}
],
"legends": [],
"fields": [
"__rowLabel",
"index",
"label",
"value",
"formatted",
"tooltip",
"id",
"sampleIndex"
],
"scales": [
{
"id": "pipeline_index_x_x_scale",
"type": "linear",
"domain": {
"source": "field",
"data": "source_gallery_areagraph",
"field": "index",
"fields": [],
"includeZero": false,
"order": "input",
"reverse": false,
"symmetric": false
}
},
{
"id": "pipeline_value_y_y_scale",
"type": "linear",
"domain": {
"source": "field",
"data": "source_gallery_areagraph",
"field": "value",
"fields": [],
"includeZero": true,
"order": "input",
"reverse": false,
"symmetric": false
}
}
],
"layers": [
{
"id": "pipeline_xgrid_guide",
"mark": "line",
"role": "guide"
},
{
"id": "pipeline_ygrid_guide",
"mark": "line",
"role": "guide"
},
{
"id": "pipeline_xaxis_guide-tick-marks",
"mark": "line",
"role": "guide"
},
{
"id": "pipeline_xaxis_guide-labels",
"mark": "text",
"role": "guide"
},
{
"id": "pipeline_yaxis_guide-labels",
"mark": "text",
"role": "guide"
},
{
"id": "create_chart_surface",
"mark": "rect",
"role": "context"
},
{
"id": "pipeline_value_line_panel_layout_surface",
"mark": "rect",
"role": "context"
},
{
"id": "pipeline_value_line_area_layer",
"mark": "path",
"role": "data",
"path": {
"directD": false,
"areaBand": false,
"closedToY": true,
"curve": "linear",
"sortBy": "index"
}
},
{
"id": "pipeline_value_line_line_layer",
"mark": "path",
"role": "data",
"path": {
"directD": false,
"areaBand": false,
"closedToY": false,
"curve": "linear",
"sortBy": "index"
}
},
{
"id": "pipeline_value_line_sample_points_layer",
"mark": "point",
"role": "interaction"
},
{
"id": "pipeline_index_labels_layer",
"mark": "text",
"role": "guide"
}
]
}Resolved SceneGraph
{
"scene": "gallery.areaGraph.scene",
"scales": [
{
"id": "pipeline_index_x_x_scale",
"type": "linear",
"domain": [
0,
12
],
"range": [
70,
830
],
"ticks": [
0,
2,
4,
6,
8,
10,
12
]
},
{
"id": "pipeline_value_y_y_scale",
"type": "linear",
"domain": [
0,
120
],
"range": [
400,
70
],
"ticks": [
0,
20,
40,
60,
80,
100,
120
]
}
],
"layers": [
{
"id": "create_chart_surface",
"role": "context",
"zIndex": -10,
"glyphs": 1
},
{
"id": "pipeline_xgrid_guide",
"role": "guide",
"zIndex": 0,
"glyphs": 7
},
{
"id": "pipeline_ygrid_guide",
"role": "guide",
"zIndex": 0,
"glyphs": 7
},
{
"id": "pipeline_value_line_panel_layout_surface",
"role": "context",
"zIndex": 0,
"glyphs": 1
},
{
"id": "pipeline_xaxis_guide-tick-marks",
"role": "guide",
"zIndex": 5,
"glyphs": 7
},
{
"id": "pipeline_value_line_area_layer",
"role": "data",
"zIndex": 10,
"glyphs": 1
},
{
"id": "pipeline_xaxis_guide-labels",
"role": "guide",
"zIndex": 20,
"glyphs": 7
},
{
"id": "pipeline_yaxis_guide-labels",
"role": "guide",
"zIndex": 20,
"glyphs": 7
},
{
"id": "pipeline_value_line_line_layer",
"role": "data",
"zIndex": 20,
"glyphs": 1
},
{
"id": "pipeline_value_line_sample_points_layer",
"role": "interaction",
"zIndex": 30,
"glyphs": 2
},
{
"id": "pipeline_index_labels_layer",
"role": "guide",
"zIndex": 30,
"glyphs": 12
}
]
}Glyph Data Tree
Full parameter lineage for the active compiler surface.
create_chart_surface
pipeline_xgrid_guide
pipeline_ygrid_guide
pipeline_value_line_panel_layout_surface
pipeline_xaxis_guide-tick-marks
pipeline_value_line_area_layer
pipeline_xaxis_guide-labels
pipeline_yaxis_guide-labels
pipeline_value_line_line_layer
pipeline_value_line_sample_points_layer
pipeline_index_labels_layer
Glyph Inspector
Select a glyph in the chart to inspect resolved params and lineage.