fix: make durationExpr work for week (vega#8907)

Co-authored-by: GitHub Actions Bot <[email protected]>

Author: 2 people

examples/compiled/bar_grouped_timeunit_yearweek.png

@@ -0,0 +1,160 @@
+{
+  "$schema": "https://vega.github.io/schema/vega/v5.json",
+  "background": "white",
+  "padding": 5,
+  "width": 400,
+  "height": 250,
+  "style": "cell",
+  "data": [
+    {
+      "name": "source_0",
+      "url": "data/cars.json",
+      "format": {"type": "json", "parse": {"Year": "date"}},
+      "transform": [
+        {
+          "type": "filter",
+          "expr": "inrange(time(datetime(year(datum[\"Year\"]), 0, 1, 0, 0, 0, 0)), [time(datetime(1970, 0, 1, 0, 0, 0, 0)), time(datetime(1971, 0, 1, 0, 0, 0, 0))])"
+        },
+        {
+          "field": "Year",
+          "type": "timeunit",
+          "units": ["year", "week"],
+          "as": ["yearweek_Year", "yearweek_Year_end"]
+        },
+        {
+          "type": "aggregate",
+          "groupby": ["yearweek_Year", "yearweek_Year_end", "Origin"],
+          "ops": ["count"],
+          "fields": [null],
+          "as": ["__count"]
+        },
+        {
+          "type": "filter",
+          "expr": "(isDate(datum[\"yearweek_Year\"]) || (isValid(datum[\"yearweek_Year\"]) && isFinite(+datum[\"yearweek_Year\"])))"
+        }
+      ]
+    }
+  ],
+  "marks": [
+    {
+      "name": "marks",
+      "type": "rect",
+      "style": ["bar"],
+      "from": {"data": "source_0"},
+      "encode": {
+        "update": {
+          "fill": {"scale": "color", "field": "Origin"},
+          "ariaRoleDescription": {"value": "bar"},
+          "description": {
+            "signal": "\"Year (year-week): \" + (timeFormat(datum[\"yearweek_Year\"], timeUnitSpecifier([\"year\",\"week\"], {\"year-month\":\"%b %Y \",\"year-month-date\":\"%b %d, %Y \"}))) + \"; Number of Cars: \" + (format(datum[\"__count\"], \"\")) + \"; Origin: \" + (isValid(datum[\"Origin\"]) ? datum[\"Origin\"] : \"\"+datum[\"Origin\"])"
+          },
+          "xc": {
+            "scale": "x",
+            "field": "yearweek_Year",
+            "offset": {"scale": "xOffset", "field": "Origin", "band": 0.5}
+          },
+          "width": {"signal": "max(0.25, bandwidth('xOffset'))"},
+          "y": {"scale": "y", "field": "__count"},
+          "y2": {"scale": "y", "value": 0}
+        }
+      }
+    }
+  ],
+  "scales": [
+    {
+      "name": "x",
+      "type": "time",
+      "domain": {
+        "data": "source_0",
+        "fields": ["yearweek_Year", "yearweek_Year_end"]
+      },
+      "range": [0, {"signal": "width"}]
+    },
+    {
+      "name": "y",
+      "type": "linear",
+      "domain": {"data": "source_0", "field": "__count"},
+      "range": [{"signal": "height"}, 0],
+      "nice": true,
+      "zero": true
+    },
+    {
+      "name": "xOffset",
+      "type": "band",
+      "domain": {"data": "source_0", "field": "Origin", "sort": true},
+      "range": [
+        {
+          "signal": "0.1 * (scale('x', datetime(2001, 0, 8, 0, 0, 0, 0)) - scale('x', datetime(2001, 0, 1, 0, 0, 0, 0)))"
+        },
+        {
+          "signal": "0.9 * (scale('x', datetime(2001, 0, 8, 0, 0, 0, 0)) - scale('x', datetime(2001, 0, 1, 0, 0, 0, 0)))"
+        }
+      ]
+    },
+    {
+      "name": "color",
+      "type": "ordinal",
+      "domain": {"data": "source_0", "field": "Origin", "sort": true},
+      "range": "category"
+    }
+  ],
+  "axes": [
+    {
+      "scale": "x",
+      "orient": "bottom",
+      "gridScale": "y",
+      "grid": true,
+      "tickCount": {"signal": "ceil(width/40)"},
+      "tickMinStep": {
+        "signal": "datetime(2001, 0, 8, 0, 0, 0, 0) - datetime(2001, 0, 1, 0, 0, 0, 0)"
+      },
+      "domain": false,
+      "labels": false,
+      "aria": false,
+      "maxExtent": 0,
+      "minExtent": 0,
+      "ticks": false,
+      "zindex": 0
+    },
+    {
+      "scale": "y",
+      "orient": "left",
+      "gridScale": "x",
+      "grid": true,
+      "tickCount": {"signal": "ceil(height/40)"},
+      "domain": false,
+      "labels": false,
+      "aria": false,
+      "maxExtent": 0,
+      "minExtent": 0,
+      "ticks": false,
+      "zindex": 0
+    },
+    {
+      "scale": "x",
+      "orient": "bottom",
+      "grid": false,
+      "title": "Year (year-week)",
+      "format": {
+        "signal": "timeUnitSpecifier([\"year\",\"week\"], {\"year-month\":\"%b %Y \",\"year-month-date\":\"%b %d, %Y \"})"
+      },
+      "labelFlush": true,
+      "labelOverlap": true,
+      "tickCount": {"signal": "ceil(width/40)"},
+      "tickMinStep": {
+        "signal": "datetime(2001, 0, 8, 0, 0, 0, 0) - datetime(2001, 0, 1, 0, 0, 0, 0)"
+      },
+      "zindex": 0
+    },
+    {
+      "scale": "y",
+      "orient": "left",
+      "grid": false,
+      "title": "Number of Cars",
+      "labelOverlap": true,
+      "tickCount": {"signal": "ceil(height/40)"},
+      "zindex": 0
+    }
+  ],
+  "legends": [{"fill": "color", "symbolType": "square", "title": "Origin"}]
+}