Standard Parallel and Secant Parallel in Azimuthal Projections
It is commonly assumed that standard parallels and parallels that appear as the intersections of a developable surface and a sphere or ellipsoid coincide. This paper shows that this is not true of azimuthal projections which are equidistant along meridians, equidistant along parallels (orthographic)...
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Croatian Cartographic Society
2017-12-01
|
| Series: | Kartografija i Geoinformacije |
| Subjects: | |
| Online Access: | http://kig.kartografija.hr/index.php/kig/article/view/783 |
| Summary: | It is commonly assumed that standard parallels and parallels that appear as the intersections of a developable surface and a sphere or ellipsoid coincide. This paper shows that this is not true of azimuthal projections which are equidistant along meridians, equidistant along parallels (orthographic), and equal-area, because there is no standard parallel at all in such projections. Only some azimuthal conformal (stereographic) projections have standard parallel, in which case it coincides with secant parallel. |
|---|---|
| ISSN: | 1333-896X 1848-0713 |