更改某条轨迹的空间参考标识符（SRID）。

语法

trajectory ST_SetSRID(trajectory traj, int srid);

参数

参数名称 描述
traj 轨迹对象。
srid 目标SRID。

描述

将轨迹的SRID设置为给定的值，但不更改其它内容。

示例

select ST_setSRID('{"trajectory":{"version":1,"type":"STPOINT","leafcount":2,"start_time":"2007-05-27 00:00:00","end_time":"2007-05-28 08:36:47.846","spatial":"SRID=4326;LINESTRING(13.43593 52.41721,13.43593 52.41721)","timeline":["2007-05-27 00:00:00","2007-05-28 08:36:47.846"]}}'::trajectory
,4002);
                                                                                                                           st_setsrid                                                                                                                           
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 {"trajectory":{"version":1,"type":"STPOINT","leafcount":2,"start_time":"2007-05-27 00:00:00","end_time":"2007-05-28 08:36:48","spatial":"SRID=4002;LINESTRING(13.43593 52.41721,13.43593 52.41721)","timeline":["2007-05-27 00:00:00","2007-05-28 08:36:48"]}}
(1 row)