Q: How to get the query results of the point, line, and region after the projection transformation?

A: iServer8.1.0 or higher versions support projection transformation of data service query results. But now you can only send an HTTP request or modify the iClient for JavaScript related service class (recommended) to send one more request parameter; please refer to iServer REST API. The online help link:http://support.supermap.com.cn:8090/iserver/help/html/mergedProjects/SuperMapiServerRESTAPI/root/data/featureResults/featureResults.htm#POST request