testing: add case for quantitative stacked scale theta graphs

vega · Jan 26, 2025 · 5bfb7f9 · 5bfb7f9
1 parent 369fa1e
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diff --git a/examples/compiled/arc_quantitative_stacked_theta.vg.json b/examples/compiled/arc_quantitative_stacked_theta.vg.json
@@ -0,0 +1,135 @@
+{
+  "$schema": "https://vega.github.io/schema/vega/v5.json",
+  "background": "white",
+  "padding": 5,
+  "width": 200,
+  "height": 200,
+  "style": "view",
+  "data": [
+    {
+      "name": "source_0",
+      "values": [
+        {
+          "segment": 1,
+          "value": 8
+        },
+        {
+          "segment": 2,
+          "value": 7
+        },
+        {
+          "segment": 3,
+          "value": 6
+        }
+      ]
+    },
+    {
+      "name": "data_0",
+      "source": "source_0",
+      "transform": [
+        {
+          "type": "stack",
+          "groupby": [],
+          "field": "segment",
+          "sort": {
+            "field": [],
+            "order": []
+          },
+          "as": [
+            "segment_start",
+            "segment_end"
+          ],
+          "offset": "zero"
+        },
+        {
+          "type": "filter",
+          "expr": "isValid(datum[\"segment\"]) && isFinite(+datum[\"segment\"]) && isValid(datum[\"value\"]) && isFinite(+datum[\"value\"])"
+        }
+      ]
+    }
+  ],
+  "marks": [
+    {
+      "name": "marks",
+      "type": "arc",
+      "style": [
+        "arc"
+      ],
+      "from": {
+        "data": "data_0"
+      },
+      "encode": {
+        "update": {
+          "opacity": {
+            "value": 0.5
+          },
+          "stroke": {
+            "value": "#fff"
+          },
+          "innerRadius": {
+            "value": 20
+          },
+          "fill": {
+            "value": "#4c78a8"
+          },
+          "description": {
+            "signal": "\"segment: \" + (format(datum[\"segment\"], \"\")) + \"; value: \" + (format(datum[\"value\"], \"\"))"
+          },
+          "x": {
+            "signal": "width",
+            "mult": 0.5
+          },
+          "y": {
+            "signal": "height",
+            "mult": 0.5
+          },
+          "outerRadius": {
+            "scale": "radius",
+            "field": "value"
+          },
+          "startAngle": {
+            "scale": "theta",
+            "field": "segment_end"
+          },
+          "endAngle": {
+            "scale": "theta",
+            "field": "segment_start"
+          }
+        }
+      }
+    }
+  ],
+  "scales": [
+    {
+      "name": "theta",
+      "type": "linear",
+      "domain": {
+        "data": "data_0",
+        "fields": [
+          "segment_start",
+          "segment_end"
+        ]
+      },
+      "range": [
+        0,
+        6.283185307179586
+      ],
+      "zero": true
+    },
+    {
+      "name": "radius",
+      "type": "sqrt",
+      "domain": {
+        "data": "data_0",
+        "field": "value"
+      },
+      "range": [
+        20,
+        {
+          "signal": "min(width,height)/2"
+        }
+      ],
+      "zero": true
+    }
+  ]
+}
diff --git a/examples/specs/arc_quantitative_stacked_theta.vl.json b/examples/specs/arc_quantitative_stacked_theta.vl.json
@@ -0,0 +1,40 @@
+{
+  "$schema": "https://vega.github.io/schema/vega-lite/v5.json",
+  "data": {
+    "values": [
+      {
+        "segment": 1,
+        "value": 8
+      },
+      {
+        "segment": 2,
+        "value": 7
+      },
+      {
+        "segment": 3,
+        "value": 6
+      }
+    ]
+  },
+  "mark": {
+    "type": "arc",
+    "innerRadius": 20,
+    "stroke": "#fff",
+    "opacity": 0.5
+  },
+  "encoding": {
+    "theta": {
+      "field": "segment",
+      "type": "quantitative",
+      "stack": true
+    },
+    "radius": {
+      "field": "value",
+      "scale": {
+        "type": "sqrt",
+        "zero": true,
+        "rangeMin": 20
+      }
+    }
+  }
+}