ST_SetSRID
更新時(shí)間:
更改某條軌跡的空間參考標(biāo)識(shí)符(SRID)。
語(yǔ)法
trajectory ST_SetSRID(trajectory traj, int srid);
參數(shù)
參數(shù)名稱(chēng) | 描述 |
traj | 軌跡對(duì)象。 |
srid | 目標(biāo)SRID。 |
描述
將軌跡的SRID設(shè)置為給定的值,但不更改其它內(nèi)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)
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