My Projection Collection:
Compare Projections
Guyou vs. Markley’s Tetrahedral Map
| Guyou | Markley’s Tetrahedral Map | |
|---|---|---|
| Creator | Emile Guyou (1887) | F. Landis Markley, L.P. Lee (1982 / 1965) |
| Group | Polyhedral | Polyhedral |
| Property | Conformal | Conformal |
| Other Names | — | — |
| Remarks | In the image, the projection is centered on 20° West in order to keep the landmasses away from the areas of greatest distortion (where conformality fails). | A special arrangement of Lee’s Conformal Tetrahedral Projection. See my blogpost Lee, Markley, CALM & Grieger. |
| recommended comparisons | Markley’s Tetrahedral Map | Guyou |
|
This pairing is among the list of recommended pairings – but why? Both show a conformal world map, arranged in a rectangle. Markley’s map was designed as an alternative to Guyou’s. |
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Remark: On these two projections, »scaled to fit« and »scaled to same width« will be quite identical!
1. Comparison: Physical Map – scaled to fit
Guyou
Markley’s Tetrahedral Map
2. Comparison: Political Map – scaled to fit
Guyou
Markley’s Tetrahedral Map
3. Comparison: Silhouette Map – scaled to fit
4. Comparison: Tissot Indicatrix, 30° – scaled to fit
Guyou
Markley’s Tetrahedral Map
5. Comparison: Physical Map – scaled to same width
Guyou
Markley’s Tetrahedral Map
6. Comparison: Political Map – scaled to same width
Guyou
Markley’s Tetrahedral Map
7. Comparison: Silhouette Map – scaled to same width
8. Comparison: Tissot Indicatrix, 30° – scaled to same width
Guyou
Markley’s Tetrahedral Map
9. Comparison: Tissot Indicatrix, 15° – scaled to fit
Guyou
Markley’s Tetrahedral Map
10. Comparison: Tissot Indicatrix, 15° – scaled to same width
Guyou
Markley’s Tetrahedral Map
