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How to extract latitude and longitude coordinates from a polygon?
I’m trying to extract latitude / longitude values from a polygon column in PostgreSQL that I created using the PostGIS extension, I tried get the coordinates using a query like this ST_AsText (coverage_area) as coverage_area But the output it returns it’s not in a convenient form for me to use.
How to return longitude and latitude in PostGIS?
ST_X and ST_Y return the actual longitude and latitude (assuming geom is in the appropriate SRS). These st_x/st_y functions are confusing. I am working with PostGresQL/PostGIS 2.4 as we speak.
How to extract coordinates from Polygon in PostgreSQL?
See the Examples section in the ST_AsGeoJSON docs as well as the JSON functions reference for PostgreSQL. If you need more flexibility also covering linestrings, points, and similar: You can also use postgresql string functions to simplify the query.
How to convert geometry to latitude and longitude?
This is the bounding rect roughly enclosing the country of Kenya: Converting one of the points into a geometry object, then use st_x () = 4.95… st_y ()=41.012… If you use google maps, x is latitude and y is longitude !
How to remove polygons from a PostgreSQL query?
If you need more flexibility also covering linestrings, points, and similar: You can also use postgresql string functions to simplify the query. This will remove “POLYGON ( (” at the beginning and “))” at the end. Thanks for contributing an answer to Stack Overflow!
How to find the coverage area of a polygon?
ST_AsText (coverage_area) as coverage_area But the output it returns it’s not in a convenient form for me to use. POLYGON ( (37.9615819622 23.7216281890869,37.9617173039801 23.7193965911865,37.9633413851658 23.717679977417,37.964559422483 23.7147617340087,37.9644240860015 23.7116718292236,37.9615819622 23.7216281890869))