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I received a dataset containing some "XY" coordinates that are supposed to correspond to some locations in natural reserves/national parks in Costa Rica. I'm trying to use the
proj4 package in R to try to convert these coordinates to lat/long (using the
project(..., inverse = TRUE) command), but I cannot figure out which projection was used to get the XY coordinates, so I cannot invert the projection to get the lat/long.
How can I guess which projection/coordinate system was used?
A few points:
X, Y 193087, 1056379 193587, 1056917 211524, 1032512 213201, 1032612