This page simply validates a coordinate Point - a double composed of a decimal latitude and decimal longitude.
I built it to test my sanitizing & validation code.
Following the same rules as for latitude and longitude, I want to:
Trim whitespace; Strip slashes; Convert html.
Remove degree (°) signs.
Truncate (not round) to 6 digits past the decimal.
Trim leading zeros: "-005.5" --> "-5.5".
Begin with zero: ".6" --> "0.6".
Correct negative zero: "-0" --> "0".
Accept latitudes from -90 to 90 and longitudes from -180 to 180.