Opened 13 years ago
Closed 13 years ago
#1676 closed defect (worksforme)
Problem in converting from RT90(SRID=3021) to WGS84(SRID=4326)
| Reported by: | arashamiri | Owned by: | pramsey |
|---|---|---|---|
| Priority: | high | Milestone: | PostGIS 1.4.3 |
| Component: | postgis | Version: | 1.5.X |
| Keywords: | Cc: |
Description
I try with two different versions of postgreSQL and postGIS. With the same SQL.
I want to convert coordinates in RT90(SRID=3021) to WGS84(SRID=4326)
Select * From ST_X(ST_Transform(ST_SetSRID(ST_Point(1335932, 6177809), 3021), 4326)) as long, ST_Y(ST_Transform(ST_SetSRID(ST_Point(1335932, 6177809), 3021), 4326)) as lat
First: PostgresSQL versione 8.4 , postgis-1.4.2 Result: Long: 13.198086050257 Lat: 55.7017960558017
Second: PostgresSQL versione 9.1 , postgis-1.5.3 Result: Long: 13.1954101954645 Lat: 55.7017121131652
The first seems wrong. The results are actually the lat,long in the RT_1990(SRID=4124).
The second seems correct and the results are in WGS84(SRID=4326) which they should be.
Change History (2)
comment:1 by , 13 years ago
comment:2 by , 13 years ago
| Resolution: | → worksforme |
|---|---|
| Status: | new → closed |
Need feedback from user to resolve this, as per strk's comment. Almost certainly a change in proj4text between versions.
It is PROJ that matters here, and proj4text entry in spatial_ref_sys. Compare the two proj4text values for SRIDS 3021 and 4326 and see if they differ. Also report version of PROJ (select postgis_full_version() should tell you)