Most traditional map projections books focus on the algorithms only. So hopefully you get spherical and ellipsoidal equations (if they exist) plus con...

@mathteacher Oh, god. Sometimes I really hate WGS84 AND web Mercator.?ÿ In the latest ISO 19111 (spatial referencing by coordinates AKA coordinate re...

A song for the first of May (British folk):?ÿ ?ÿ ?ÿ

@john-nolton That was a guess! ???œ

@bill93 Yep. I could tell I threw him off his game when I queried the "grandma" statement.

@jim-frame I had a fun call today. I usually do answer unknown numbers because I have kids and I've had calls from doctors, teachers, schools who have...

@jitterboogie Meanwhile I had a friend call me up one day and excitedly say, "I found some of your work emails on the internet!!" I went to look and t...

Adding a correction to convert from the great elliptic distance to the true geodesic distance.?ÿ