We are saving our drawn polygons in our database with the coordinate system 4326. The polygons drawn are all in Spain (where I came to find out the adequate coordinate system for Spain is EPSG:2062).
This been said, which one will calculate with more accuracy the area of the polygon?
"st_area(polygon)" or "ST_area(ST_Transform(polygon::geometry, 2062))"?
I know that using the one related to my country will give me (in theory) the most accurate results/georeferencing, but is it really true? Also, and since we are drawing in a map that only supports 4326, will we have a more accurate calculated area by converting the coordinate system and calculating afterwards, or should we calculate the area with the current coordinate system?