antv-l7/docs/common/layer/layer_ctr.md

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## 图层控制方法
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### show()
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图层显示
```javascript
layer.show();
```
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### hide()
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图层隐藏
```javascript
layer.hide();
```
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### isVisible(): boolean
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图层是否可见
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```javascript
layer.isVisible();
```
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### setIndex(zIndex: int)
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设置图层绘制顺序
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```javascript
layer.setIndex(1);
```
### fitBounds()
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缩放到图层范围
```javascript
layer.fitBounds();
```
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### setMinZoom(zoom: number)
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设置图层最小缩放等级
```javascript
layer.setMinZoom(zoom);
```
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### setMaxZoom(zoom: number)
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设置图层最大缩放等级
```javascript
layer.setMinZoom(zoom);
```
设置图层最大缩放等级
参数
- zoom {number}
```javascript
layer.setMinZoom(zoom);
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```