Converting Longitude & Latitude to X Y on a map using Julia


Well, I went ahead and did this β€” let me know if it seems useful.

@Wedg somehow I missed your comment about the implementation in PlotShapefiles.jl, but oh well :slight_smile:

One nice (at least, IMO) thing the Geodesy.jl API provides is CoordinateTransformations.jl β€” based transformation objects so you can naturally create a whole pipeline of coordinate transformations.

TBH it feels a little dirty to provide this somewhat-broken projection in a package called β€œGeodesy”, but it’s undeniably needed as it’s ubiquitous in practice… Even the EPSG eventually had to give up and assign it an official code :laughing:


Hi @joa-quim, is there a way in Julia to convert from geographic coordinates (xΒΊ x’’ x’) to decimal coordinates to use in GMT?
JoΓ£o Rocha

Are you asking on how to do it from data in a file?
It’s automatic

-10:19:58.800   40:46:37.200

1Γ—2 GMTdataset{Float64, 2}
 Row β”‚   col.1    col.2
     β”‚ Float64  Float64
   1 β”‚ -10.333   40.777
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