增加SerieData的ignore可忽略当前数据项

Runtime/Component/Main/Serie.cs

@@ -1704,19 +1704,22 @@ namespace XCharts
             }
         }
 
-        public bool IsIgnoreIndex(int index, int dimension)
+        public bool IsIgnoreIndex(int index, int dimension = 1)
         {
-            if (m_Ignore)
+            var serieData = GetSerieData(index);
+            if (serieData != null)
             {
-                var serieData = GetSerieData(index);
-                if (serieData != null)
-                {
-                    return IsIgnoreValue(serieData.GetData(dimension));
-                }
+                return IsIgnoreValue(serieData, dimension);
             }
             return false;
         }
 
+        public bool IsIgnoreValue(SerieData serieData, int dimension = 1)
+        {
+            if (serieData.ignore) return true;
+            return IsIgnoreValue(serieData.GetData(dimension));
+        }
+
         public bool IsIgnoreValue(float value)
         {
             return m_Ignore && Mathf.Approximately(value, m_IgnoreValue);

Runtime/Component/Sub/SerieData.cs

@@ -19,6 +19,7 @@ namespace XCharts
     {
         [SerializeField] private string m_Name;
         [SerializeField] private bool m_Selected;
+        [SerializeField] private bool m_Ignore = false;
         [SerializeField] private float m_Radius;
         [SerializeField] private IconStyle m_IconStyle = new IconStyle();
         [SerializeField] private bool m_EnableLabel = false;
@@ -94,6 +95,14 @@ namespace XCharts
         /// </summary>
         public SerieSymbol symbol { get { return m_Symbol; } set { m_Symbol = value; } }
         /// <summary>
+        /// 是否忽略数据。当为 true 时，数据不进行绘制。
+        /// </summary>
+        public bool ignore
+        {
+            get { return m_Ignore; }
+            set { if (PropertyUtil.SetStruct(ref m_Ignore, value)) SetVerticesDirty(); }
+        }
+        /// <summary>
         /// An arbitrary dimension data list of data item.
         /// 可指定任意维数的数值列表。
         /// </summary>