fix: make bin/timeUnit band respect minBandSize config

examples/compiled/bar_1d_binned.vg.json

@@ -51,9 +51,17 @@
           "x2": {
             "scale": "x",
             "field": "bin_maxbins_100_minstep_1_delay",
-            "offset": 1
+            "offset": {
+              "signal": "0.5 + (abs(scale(\"x\", datum[\"bin_maxbins_100_minstep_1_delay_end\"]) - scale(\"x\", datum[\"bin_maxbins_100_minstep_1_delay\"])) < 0.25 ? -0.5 * (0.25 - (abs(scale(\"x\", datum[\"bin_maxbins_100_minstep_1_delay_end\"]) - scale(\"x\", datum[\"bin_maxbins_100_minstep_1_delay\"])))) : 0.5)"
+            }
+          },
+          "x": {
+            "scale": "x",
+            "field": "bin_maxbins_100_minstep_1_delay_end",
+            "offset": {
+              "signal": "0.5 + (abs(scale(\"x\", datum[\"bin_maxbins_100_minstep_1_delay_end\"]) - scale(\"x\", datum[\"bin_maxbins_100_minstep_1_delay\"])) < 0.25 ? 0.5 * (0.25 - (abs(scale(\"x\", datum[\"bin_maxbins_100_minstep_1_delay_end\"]) - scale(\"x\", datum[\"bin_maxbins_100_minstep_1_delay\"])))) : -0.5)"
+            }
           },
-          "x": {"scale": "x", "field": "bin_maxbins_100_minstep_1_delay_end"},
           "y": {"value": 0},
           "y2": {"field": {"group": "height"}}
         }

examples/compiled/bar_aggregate_count.vg.json

@@ -60,9 +60,17 @@
           "x2": {
             "scale": "x",
             "field": "bin_maxbins_10_precipitation",
-            "offset": 1
+            "offset": {
+              "signal": "0.5 + (abs(scale(\"x\", datum[\"bin_maxbins_10_precipitation_end\"]) - scale(\"x\", datum[\"bin_maxbins_10_precipitation\"])) < 0.25 ? -0.5 * (0.25 - (abs(scale(\"x\", datum[\"bin_maxbins_10_precipitation_end\"]) - scale(\"x\", datum[\"bin_maxbins_10_precipitation\"])))) : 0.5)"
+            }
+          },
+          "x": {
+            "scale": "x",
+            "field": "bin_maxbins_10_precipitation_end",
+            "offset": {
+              "signal": "0.5 + (abs(scale(\"x\", datum[\"bin_maxbins_10_precipitation_end\"]) - scale(\"x\", datum[\"bin_maxbins_10_precipitation\"])) < 0.25 ? 0.5 * (0.25 - (abs(scale(\"x\", datum[\"bin_maxbins_10_precipitation_end\"]) - scale(\"x\", datum[\"bin_maxbins_10_precipitation\"])))) : -0.5)"
+            }
           },
-          "x": {"scale": "x", "field": "bin_maxbins_10_precipitation_end"},
           "y": {"scale": "y", "field": "__count"},
           "y2": {"scale": "y", "value": 0}
         }

examples/compiled/bar_binned_data.vg.json

@@ -51,8 +51,20 @@
           "description": {
             "signal": "\"bin_start: \" + (!isValid(datum[\"bin_start\"]) || !isFinite(+datum[\"bin_start\"]) ? \"null\" : format(datum[\"bin_start\"], \"\") + \" – \" + format(datum[\"bin_end\"], \"\")) + \"; count: \" + (format(datum[\"count\"], \"\"))"
           },
-          "x2": {"scale": "x", "field": "bin_start", "offset": 1},
-          "x": {"scale": "x", "field": "bin_end"},
+          "x2": {
+            "scale": "x",
+            "field": "bin_start",
+            "offset": {
+              "signal": "0.5 + (abs(scale(\"x\", datum[\"bin_start_end\"]) - scale(\"x\", datum[\"bin_start\"])) < 0.25 ? -0.5 * (0.25 - (abs(scale(\"x\", datum[\"bin_start_end\"]) - scale(\"x\", datum[\"bin_start\"])))) : 0.5)"
+            }
+          },
+          "x": {
+            "scale": "x",
+            "field": "bin_end",
+            "offset": {
+              "signal": "0.5 + (abs(scale(\"x\", datum[\"bin_start_end\"]) - scale(\"x\", datum[\"bin_start\"])) < 0.25 ? 0.5 * (0.25 - (abs(scale(\"x\", datum[\"bin_start_end\"]) - scale(\"x\", datum[\"bin_start\"])))) : -0.5)"
+            }
+          },
           "y": {"scale": "y", "field": "count_end"},
           "y2": {"scale": "y", "field": "count_start"}
         }

examples/compiled/bar_custom_time_domain.vg.json

@@ -54,8 +54,20 @@
           "description": {
             "signal": "\"a (hours): \" + (timeFormat(datum[\"hours_a\"], timeUnitSpecifier([\"hours\"], {\"year-month\":\"%b %Y \",\"year-month-date\":\"%b %d, %Y \"}))) + \"; b: \" + (format(datum[\"b\"], \"\"))"
           },
-          "x2": {"scale": "x", "field": "hours_a", "offset": 1},
-          "x": {"scale": "x", "field": "hours_a_end"},
+          "x2": {
+            "scale": "x",
+            "field": "hours_a",
+            "offset": {
+              "signal": "0.5 + (abs(scale(\"x\", datum[\"hours_a_end\"]) - scale(\"x\", datum[\"hours_a\"])) < 0.25 ? -0.5 * (0.25 - (abs(scale(\"x\", datum[\"hours_a_end\"]) - scale(\"x\", datum[\"hours_a\"])))) : 0.5)"
+            }
+          },
+          "x": {
+            "scale": "x",
+            "field": "hours_a_end",
+            "offset": {
+              "signal": "0.5 + (abs(scale(\"x\", datum[\"hours_a_end\"]) - scale(\"x\", datum[\"hours_a\"])) < 0.25 ? 0.5 * (0.25 - (abs(scale(\"x\", datum[\"hours_a_end\"]) - scale(\"x\", datum[\"hours_a\"])))) : -0.5)"
+            }
+          },
           "y": {"scale": "y", "field": "b_end"},
           "y2": {"scale": "y", "field": "b_start"}
         }

examples/compiled/bar_month_band.vg.json

@@ -46,10 +46,15 @@
           },
           "x2": {
             "signal": "scale(\"x\", 0.15000000000000002 * datum[\"month_date\"] + 0.85 * datum[\"month_date_end\"])",
-            "offset": 1
+            "offset": {
+              "signal": "0.5 + (abs(scale(\"x\", datum[\"month_date_end\"]) - scale(\"x\", datum[\"month_date\"])) < 0.25 ? -0.5 * (0.25 - (abs(scale(\"x\", datum[\"month_date_end\"]) - scale(\"x\", datum[\"month_date\"])))) : 0.5)"
+            }
           },
           "x": {
-            "signal": "scale(\"x\", 0.85 * datum[\"month_date\"] + 0.15000000000000002 * datum[\"month_date_end\"])"
+            "signal": "scale(\"x\", 0.85 * datum[\"month_date\"] + 0.15000000000000002 * datum[\"month_date_end\"])",
+            "offset": {
+              "signal": "0.5 + (abs(scale(\"x\", datum[\"month_date_end\"]) - scale(\"x\", datum[\"month_date\"])) < 0.25 ? 0.5 * (0.25 - (abs(scale(\"x\", datum[\"month_date_end\"]) - scale(\"x\", datum[\"month_date\"])))) : -0.5)"
+            }
           },
           "y": {"scale": "y", "field": "mean_precipitation"},
           "y2": {"scale": "y", "value": 0}

examples/compiled/bar_month_band_config.vg.json

@@ -46,10 +46,15 @@
           },
           "x2": {
             "signal": "scale(\"x\", 0.15000000000000002 * datum[\"month_date\"] + 0.85 * datum[\"month_date_end\"])",
-            "offset": 1
+            "offset": {
+              "signal": "0.5 + (abs(scale(\"x\", datum[\"month_date_end\"]) - scale(\"x\", datum[\"month_date\"])) < 0.25 ? -0.5 * (0.25 - (abs(scale(\"x\", datum[\"month_date_end\"]) - scale(\"x\", datum[\"month_date\"])))) : 0.5)"
+            }
           },
           "x": {
-            "signal": "scale(\"x\", 0.85 * datum[\"month_date\"] + 0.15000000000000002 * datum[\"month_date_end\"])"
+            "signal": "scale(\"x\", 0.85 * datum[\"month_date\"] + 0.15000000000000002 * datum[\"month_date_end\"])",
+            "offset": {
+              "signal": "0.5 + (abs(scale(\"x\", datum[\"month_date_end\"]) - scale(\"x\", datum[\"month_date\"])) < 0.25 ? 0.5 * (0.25 - (abs(scale(\"x\", datum[\"month_date_end\"]) - scale(\"x\", datum[\"month_date\"])))) : -0.5)"
+            }
           },
           "y": {"scale": "y", "field": "mean_precipitation"},
           "y2": {"scale": "y", "value": 0}

examples/compiled/bar_month_temporal.vg.json

@@ -44,8 +44,20 @@
           "description": {
             "signal": "\"date (month): \" + (timeFormat(datum[\"month_date\"], timeUnitSpecifier([\"month\"], {\"year-month\":\"%b %Y \",\"year-month-date\":\"%b %d, %Y \"}))) + \"; Mean of precipitation: \" + (format(datum[\"mean_precipitation\"], \"\"))"
           },
-          "x2": {"scale": "x", "field": "month_date", "offset": 1},
-          "x": {"scale": "x", "field": "month_date_end"},
+          "x2": {
+            "scale": "x",
+            "field": "month_date",
+            "offset": {
+              "signal": "0.5 + (abs(scale(\"x\", datum[\"month_date_end\"]) - scale(\"x\", datum[\"month_date\"])) < 0.25 ? -0.5 * (0.25 - (abs(scale(\"x\", datum[\"month_date_end\"]) - scale(\"x\", datum[\"month_date\"])))) : 0.5)"
+            }
+          },
+          "x": {
+            "scale": "x",
+            "field": "month_date_end",
+            "offset": {
+              "signal": "0.5 + (abs(scale(\"x\", datum[\"month_date_end\"]) - scale(\"x\", datum[\"month_date\"])) < 0.25 ? 0.5 * (0.25 - (abs(scale(\"x\", datum[\"month_date_end\"]) - scale(\"x\", datum[\"month_date\"])))) : -0.5)"
+            }
+          },
           "y": {"scale": "y", "field": "mean_precipitation"},
           "y2": {"scale": "y", "value": 0}
         }

examples/compiled/bar_month_temporal_initial.vg.json

@@ -45,8 +45,20 @@
           "description": {
             "signal": "\"date (month): \" + (timeFormat(datum[\"month_date\"], timeUnitSpecifier([\"month\"], {\"year-month\":\"%b %Y \",\"year-month-date\":\"%b %d, %Y \"}))) + \"; Mean of precipitation: \" + (format(datum[\"mean_precipitation\"], \"\"))"
           },
-          "x2": {"scale": "x", "field": "month_date", "offset": 1},
-          "x": {"scale": "x", "field": "month_date_end"},
+          "x2": {
+            "scale": "x",
+            "field": "month_date",
+            "offset": {
+              "signal": "0.5 + (abs(scale(\"x\", datum[\"month_date_end\"]) - scale(\"x\", datum[\"month_date\"])) < 0.25 ? -0.5 * (0.25 - (abs(scale(\"x\", datum[\"month_date_end\"]) - scale(\"x\", datum[\"month_date\"])))) : 0.5)"
+            }
+          },
+          "x": {
+            "scale": "x",
+            "field": "month_date_end",
+            "offset": {
+              "signal": "0.5 + (abs(scale(\"x\", datum[\"month_date_end\"]) - scale(\"x\", datum[\"month_date\"])) < 0.25 ? 0.5 * (0.25 - (abs(scale(\"x\", datum[\"month_date_end\"]) - scale(\"x\", datum[\"month_date\"])))) : -0.5)"
+            }
+          },
           "y": {"scale": "y", "field": "mean_precipitation"},
           "y2": {"scale": "y", "value": 0}
         }

examples/compiled/bar_yearmonth.vg.json

@@ -45,8 +45,20 @@
           "description": {
             "signal": "\"date (year-month): \" + (timeFormat(datum[\"yearmonth_date\"], timeUnitSpecifier([\"year\",\"month\"], {\"year-month\":\"%b %Y \",\"year-month-date\":\"%b %d, %Y \"}))) + \"; Mean of temp_max: \" + (format(datum[\"mean_temp_max\"], \"\"))"
           },
-          "x2": {"scale": "x", "field": "yearmonth_date", "offset": 1},
-          "x": {"scale": "x", "field": "yearmonth_date_end"},
+          "x2": {
+            "scale": "x",
+            "field": "yearmonth_date",
+            "offset": {
+              "signal": "0.5 + (abs(scale(\"x\", datum[\"yearmonth_date_end\"]) - scale(\"x\", datum[\"yearmonth_date\"])) < 0.25 ? -0.5 * (0.25 - (abs(scale(\"x\", datum[\"yearmonth_date_end\"]) - scale(\"x\", datum[\"yearmonth_date\"])))) : 0.5)"
+            }
+          },
+          "x": {
+            "scale": "x",
+            "field": "yearmonth_date_end",
+            "offset": {
+              "signal": "0.5 + (abs(scale(\"x\", datum[\"yearmonth_date_end\"]) - scale(\"x\", datum[\"yearmonth_date\"])) < 0.25 ? 0.5 * (0.25 - (abs(scale(\"x\", datum[\"yearmonth_date_end\"]) - scale(\"x\", datum[\"yearmonth_date\"])))) : -0.5)"
+            }
+          },
           "y": {"scale": "y", "field": "mean_temp_max"},
           "y2": {"scale": "y", "value": 0}
         }

examples/compiled/bar_yearmonth_custom_format.vg.json

@@ -45,8 +45,20 @@
           "description": {
             "signal": "\"date (year-month): \" + (timeFormat(datum[\"yearmonth_date\"], '%B of %Y')) + \"; Mean of temp_max: \" + (format(datum[\"mean_temp_max\"], \"\"))"
           },
-          "x2": {"scale": "x", "field": "yearmonth_date", "offset": 1},
-          "x": {"scale": "x", "field": "yearmonth_date_end"},
+          "x2": {
+            "scale": "x",
+            "field": "yearmonth_date",
+            "offset": {
+              "signal": "0.5 + (abs(scale(\"x\", datum[\"yearmonth_date_end\"]) - scale(\"x\", datum[\"yearmonth_date\"])) < 0.25 ? -0.5 * (0.25 - (abs(scale(\"x\", datum[\"yearmonth_date_end\"]) - scale(\"x\", datum[\"yearmonth_date\"])))) : 0.5)"
+            }
+          },
+          "x": {
+            "scale": "x",
+            "field": "yearmonth_date_end",
+            "offset": {
+              "signal": "0.5 + (abs(scale(\"x\", datum[\"yearmonth_date_end\"]) - scale(\"x\", datum[\"yearmonth_date\"])) < 0.25 ? 0.5 * (0.25 - (abs(scale(\"x\", datum[\"yearmonth_date_end\"]) - scale(\"x\", datum[\"yearmonth_date\"])))) : -0.5)"
+            }
+          },
           "y": {"scale": "y", "field": "mean_temp_max"},
           "y2": {"scale": "y", "value": 0}
         }

examples/compiled/bar_yearmonthdate_minBandSize.vg.json

@@ -0,0 +1,144 @@
+{
+  "$schema": "https://vega.github.io/schema/vega/v5.json",
+  "background": "white",
+  "padding": 5,
+  "width": 997,
+  "height": 200,
+  "style": "cell",
+  "data": [
+    {
+      "name": "source_0",
+      "url": "data/seattle-weather.csv",
+      "format": {"type": "csv", "parse": {"date": "date"}},
+      "transform": [
+        {
+          "field": "date",
+          "type": "timeunit",
+          "units": ["year", "month", "date"],
+          "as": ["yearmonthdate_date", "yearmonthdate_date_end"]
+        },
+        {
+          "type": "aggregate",
+          "groupby": ["yearmonthdate_date", "yearmonthdate_date_end"],
+          "ops": ["mean"],
+          "fields": ["temp_max"],
+          "as": ["mean_temp_max"]
+        },
+        {
+          "type": "filter",
+          "expr": "(isDate(datum[\"yearmonthdate_date\"]) || (isValid(datum[\"yearmonthdate_date\"]) && isFinite(+datum[\"yearmonthdate_date\"]))) && isValid(datum[\"mean_temp_max\"]) && isFinite(+datum[\"mean_temp_max\"])"
+        }
+      ]
+    }
+  ],
+  "marks": [
+    {
+      "name": "marks",
+      "type": "rect",
+      "style": ["bar"],
+      "from": {"data": "source_0"},
+      "encode": {
+        "update": {
+          "fill": {"value": "#4c78a8"},
+          "ariaRoleDescription": {"value": "bar"},
+          "description": {
+            "signal": "\"date (year-month-date): \" + (timeFormat(datum[\"yearmonthdate_date\"], timeUnitSpecifier([\"year\",\"month\",\"date\"], {\"year-month\":\"%b %Y \",\"year-month-date\":\"%b %d, %Y \"}))) + \"; Mean of temp_max: \" + (format(datum[\"mean_temp_max\"], \"\"))"
+          },
+          "x2": {
+            "scale": "x",
+            "field": "yearmonthdate_date",
+            "offset": {
+              "signal": "0.5 + (abs(scale(\"x\", datum[\"yearmonthdate_date_end\"]) - scale(\"x\", datum[\"yearmonthdate_date\"])) < 2 ? -0.5 * (2 - (abs(scale(\"x\", datum[\"yearmonthdate_date_end\"]) - scale(\"x\", datum[\"yearmonthdate_date\"])))) : 0.5)"
+            }
+          },
+          "x": {
+            "scale": "x",
+            "field": "yearmonthdate_date_end",
+            "offset": {
+              "signal": "0.5 + (abs(scale(\"x\", datum[\"yearmonthdate_date_end\"]) - scale(\"x\", datum[\"yearmonthdate_date\"])) < 2 ? 0.5 * (2 - (abs(scale(\"x\", datum[\"yearmonthdate_date_end\"]) - scale(\"x\", datum[\"yearmonthdate_date\"])))) : -0.5)"
+            }
+          },
+          "y": {"scale": "y", "field": "mean_temp_max"},
+          "y2": {"scale": "y", "value": 0}
+        }
+      }
+    }
+  ],
+  "scales": [
+    {
+      "name": "x",
+      "type": "time",
+      "domain": {
+        "data": "source_0",
+        "fields": ["yearmonthdate_date", "yearmonthdate_date_end"]
+      },
+      "range": [0, {"signal": "width"}]
+    },
+    {
+      "name": "y",
+      "type": "linear",
+      "domain": {"data": "source_0", "field": "mean_temp_max"},
+      "range": [{"signal": "height"}, 0],
+      "nice": true,
+      "zero": true
+    }
+  ],
+  "axes": [
+    {
+      "scale": "x",
+      "orient": "bottom",
+      "gridScale": "y",
+      "grid": true,
+      "tickCount": {"signal": "ceil(width/40)"},
+      "tickMinStep": {
+        "signal": "datetime(2001, 0, 2, 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": "date (year-month-date)",
+      "format": {
+        "signal": "timeUnitSpecifier([\"year\",\"month\",\"date\"], {\"year-month\":\"%b %Y \",\"year-month-date\":\"%b %d, %Y \"})"
+      },
+      "labelFlush": true,
+      "labelOverlap": true,
+      "tickCount": {"signal": "ceil(width/40)"},
+      "tickMinStep": {
+        "signal": "datetime(2001, 0, 2, 0, 0, 0, 0) - datetime(2001, 0, 1, 0, 0, 0, 0)"
+      },
+      "zindex": 0
+    },
+    {
+      "scale": "y",
+      "orient": "left",
+      "grid": false,
+      "title": "Mean of temp_max",
+      "labelOverlap": true,
+      "tickCount": {"signal": "ceil(height/40)"},
+      "zindex": 0
+    }
+  ]
+}