This function provides the test for equality of the header for two projections.
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| type(ply_prj_header_type), | intent(in) | :: | left | projection to compare | ||
| type(ply_prj_header_type), | intent(in) | :: | right | projection to compare against | 
is equal??