增加Radar对通配符{b}的支持

Documentation~/zh/changelog.md

@@ -66,6 +66,7 @@ slug: /changelog
 
 ## master
 
+* (2023.04.12) 增加`RadarChart`对通配符`{b}`的支持
 * (2023.04.11) 修复动态添加组件时`Inspector`可能异常的问题
 
 ## v3.6.0

Runtime/Component/Radar/RadarCoord.cs

@@ -429,6 +429,13 @@ namespace XCharts.Runtime
             return indicatorList[indicatorIndex];
         }
 
+        public string GetIndicatorName(int indicatorIndex)
+        {
+            var indicator = GetIndicator(indicatorIndex);
+            if (indicator == null) return string.Empty;
+            return indicator.name;
+        }
+
         public override void ClearData()
         {
             indicatorList.Clear();

Runtime/Serie/Radar/RadarHandler.cs

@@ -38,18 +38,19 @@ namespace XCharts.Runtime
             if (dataIndex < 0)
                 return;
 
+            var radar = chart.GetChartComponent<RadarCoord>(serie.radarIndex);
+            if (radar == null)
+                return;
+
             if (serie.radarType == RadarType.Single)
             {
                 var colorIndex1 = serie.colorByData ? dataIndex : serie.context.colorIndex;
+                category = radar.GetIndicatorName(dataIndex);
                 UpdateItemSerieParams(ref paramList, ref title, dataIndex, category,
                     marker, itemFormatter, numericFormatter, ignoreDataDefaultContent, 1, colorIndex1);
                 return;
             }
 
-            var radar = chart.GetChartComponent<RadarCoord>(serie.radarIndex);
-            if (radar == null)
-                return;
-
             var serieData = serie.GetSerieData(dataIndex);
             if (serieData == null)
                 return;
@@ -72,6 +73,7 @@ namespace XCharts.Runtime
                 param.value = serieData.GetData(i);
                 param.total = indicator.max;
                 param.color = color;
+                param.category = radar.GetIndicatorName(i);
                 param.marker = SerieHelper.GetItemMarker(serie, serieData, marker);
                 param.itemFormatter = SerieHelper.GetItemFormatter(serie, serieData, itemFormatter);
                 param.numericFormatter = SerieHelper.GetNumericFormatter(serie, serieData, numericFormatter);