diff --git a/README.md b/README.md index c1038a7..7f9bef9 100644 --- a/README.md +++ b/README.md @@ -4,7 +4,7 @@ This repository is used to work toward the development of an official OGC web ontology for coordinate reference systems (CRS). At present, we're simply working on documenting the benefits of a CRS ontology, but we're hoping that more will come as people determine value in the work. -## Definitions +## Definitions **spatial reference system:** A spatial reference system (SRS) is a system for establishing spatial position. A spatial reference system can use geographic identifiers (place names, for example), coordinates (in which case it is a coordinate reference system), or identifiers with structured geometry (in which case it is a discrete global grid system). **coordinate system:** A coordinate system is a set of mathematical rules for specifying how coordinates are to be assigned to points.