openlayer 坐标系例子
时间: 2023-08-17 09:06:43 浏览: 116
回答: OpenLayers中常用的坐标系例子有EPSG:4326和EPSG:3857。EPSG:4326对应WGS84坐标系统中的地理坐标(经纬度),而EPSG:3857是一种墨卡托投影坐标,用于地图显示效果较好。通常情况下,数据存储在EPSG:4326中,显示在EPSG:3857中。在OpenLayers中,可以使用坐标转换功能来实现不同坐标系之间的转换。例如,将EPSG:3857转换为EPSG:4326,可以使用transform方法,传入需要转换的坐标、原始坐标系和目标坐标系。具体使用方法如下所示:
```javascript
import {transform} from 'ol/proj';
// EPSG:3857转EPSG:4326
console.log(transform(\[12202419, 4469830\], "EPSG:3857", "EPSG:4326"));
```
这样就可以将EPSG:3857坐标系下的坐标转换为EPSG:4326坐标系下的坐标。
#### 引用[.reference_title]
- *1* [OpenLayers自定义坐标系](https://blog.csdn.net/qq_24309981/article/details/81149602)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^koosearch_v1,239^v3^insert_chatgpt"}} ] [.reference_item]
- *2* *3* [Openlayers 坐标系全面解析](https://blog.csdn.net/A____t/article/details/124626079)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^koosearch_v1,239^v3^insert_chatgpt"}} ] [.reference_item]
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