decimalLongitude
decimalLongitude is a geographic coordinate that represents a location’s east–west position on the Earth using decimal degrees. It is typically paired with decimalLatitude to define a point on a map or in a dataset. In most conventions, positive values indicate east of the Prime Meridian and negative values indicate west, with zero at the Greenwich meridian. The common valid range is -180.0 to 180.0 degrees, though some systems may normalize or wrap values differently.
As a numeric value, decimalLongitude is usually stored as a floating-point number. Data precision can vary by
Typical usage includes geographic information systems (GIS), mapping applications, geocoding results, and data exchange formats. Some
Examples: a point in San Francisco has a decimalLongitude of -122.4194 and a decimalLatitude of 37.7749. A