fix: fix the issue of setDimensionIndex

packages/vchart/src/chart/base/base-chart.ts

@@ -1396,12 +1396,18 @@ export class BaseChart<T extends IChartSpec> extends CompilableBase implements I
     });
     const isUnableValue =
       isNil(value) || !dimensionInfo || dimensionInfo.every(d => isDiscrete(d.axis.getScale().type) && isNil(d.index));
+
+    const isUnableTooltip =
+      // 如果数据本身不可用
+      isUnableValue ||
+      // 或者数据为空
+      dimensionInfo.every(d => isDiscrete(d.axis.getScale().type) && d.data.every(_data => _data.datum.length === 0));
     // tooltip
     if (opt.tooltip !== false) {
       const tooltip = this.getComponentsByType(ComponentTypeEnum.tooltip)[0] as unknown as ITooltip;
 
       if (tooltip?.getVisible()) {
-        if (isUnableValue) {
+        if (isUnableValue || isUnableTooltip) {
           (<any>tooltip).hideTooltip?.();
         } else {
           const dataFilter: { [key: string]: any } = {};
@@ -1431,6 +1437,27 @@ export class BaseChart<T extends IChartSpec> extends CompilableBase implements I
     }
   }
 
+  showCrosshair(cb: (axis: IAxis) => false | string | number) {
+    const crosshair =
+      this.getComponentsByType(ComponentTypeEnum.cartesianCrosshair)[0] ??
+      this.getComponentsByType(ComponentTypeEnum.polarCrosshair)[0];
+    if (!crosshair) {
+      return;
+    }
+    const axes = this.getComponentsByKey('axes') as IAxis[];
+    const dimInfo: { axis: IAxis; value: string | number }[] = [];
+    axes.forEach(axis => {
+      const value = cb(axis);
+      if (value !== false) {
+        dimInfo.push({
+          axis,
+          value
+        });
+      }
+    });
+    (crosshair as ICrossHair).showCrosshair(dimInfo);
+  }
+
   getColorScheme() {
     return this._option.getTheme?.('colorScheme');
   }

packages/vchart/src/chart/interface/chart.ts

@@ -32,6 +32,7 @@ import type { DataView } from '@visactor/vdataset';
 import type { IGlobalScale } from '../../scale/interface';
 import type { IMorphConfig } from '../../animation/spec';
 import type { IMarkGraphic } from '../../mark/interface/common';
+import type { IAxis } from '../../component/axis/interface';
 
 export type DimensionIndexOption = {
   filter?: (cmp: IComponent) => boolean;
@@ -217,6 +218,12 @@ export interface IChart extends ICompilable {
   getSeriesData: (id: StringOrNumber | undefined, index: number | undefined) => DataView | undefined;
   // setDimensionIndex
   setDimensionIndex: (value: StringOrNumber, opt: DimensionIndexOption) => void;
+  /**
+   * 显示交叉线
+   * @since 2.0.9
+   */
+  showCrosshair: (cb: (axis: IAxis) => false | string | number) => void;
+
   /**
    * 根据数据筛选图元
    * @since 1.13.9

packages/vchart/src/core/vchart.ts

@@ -1908,6 +1908,10 @@ export class VChart implements IVChart {
     return this._chart?.setDimensionIndex(value, opt);
   }
 
+  showCrosshair(cb: (axis: IAxis) => false | string | number) {
+    this._chart?.showCrosshair(cb);
+  }
+
   /** 停止正在进行的所有动画 */
   stopAnimation() {
     (this.getStage() as any)?.stopAnimation(true);