My Projection Collection:
Compare Projections
Gall Isographic vs. Equirectangular (0°)
Gall Isographic | Equirectangular (0°) | |
---|---|---|
Creator | James Gall (1855) | Marinus of Tyre (about AD 100) |
Group | Cylindric | Cylindric |
Property | Equidistant | Equidistant |
Other Names | — |
|
Remarks | Gall Isographic is the equirectangular projection with standard parallels at 45° North/South. | Equidistant cylindrical projection with the equator as standard parallel. |
recommended comparisons | Equirectangular (0°) Equirectangular (35.6°) |
Gall Isographic |
This pairing is among the list of recommended pairings – but why? It’s the same projection, but using different standard parallels. |
1. Comparison: Physical Map – scaled to fit
2. Comparison: Silhouette Map – scaled to fit


3. Comparison: Tissot Indicatrix, 30° – scaled to fit
Gall Isographic

Equirectangular (0°)

Gall Isographic Tissot Indicatrix c Tobias Jung
Equirectangular (0°) Tissot Indicatrix c Tobias Jung
4. Comparison: Physical Map – scaled to same width
Gall Isographic

Equirectangular (0°)

5. Comparison: Silhouette Map – scaled to same width


6. Comparison: Tissot Indicatrix, 30° – scaled to same width
Gall Isographic

Equirectangular (0°)

Gall Isographic Tissot Indicatrix c Tobias Jung
Equirectangular (0°) Tissot Indicatrix c Tobias Jung
7. Comparison: Tissot Indicatrix, 15° – scaled to fit
Gall Isographic

Equirectangular (0°)

Gall Isographic Tissot Indicatrix c Tobias Jung
Equirectangular (0°) Tissot Indicatrix c Tobias Jung
8. Comparison: Tissot Indicatrix, 15° – scaled to same width
Gall Isographic

Equirectangular (0°)

Gall Isographic Tissot Indicatrix c Tobias Jung
Equirectangular (0°) Tissot Indicatrix c Tobias Jung