My Projection Collection:
Compare Projections
Quartic Authalic vs. Sinusoidal
| Quartic Authalic | Sinusoidal | |
|---|---|---|
| Creator | Karl Siemon (1937) | Unknown (about 1570) |
| Group | Pseudocylindric | Pseudocylindric |
| Property | Equal-area | Equal-area |
| Other Names |
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| Remarks | Independently presented by Oscar Sherman Adams (1945). | — |
| recommended comparisons | Eckert-Greifendorff Sinusoidal |
Craster’s parabolic Eckert-Greifendorff Putnins P6 Quartic Authalic |
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This pairing is among the list of recommended pairings – but why? While very much alike at first glance, in direct comparision the differences become quite obvious. |
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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
2. Comparison: Political Map – scaled to fit
Quartic Authalic
Sinusoidal
3. Comparison: Silhouette Map – scaled to fit
4. Comparison: Tissot Indicatrix, 30° – scaled to fit
Quartic Authalic
Sinusoidal
5. Comparison: Physical Map – scaled to same width
Quartic Authalic
Sinusoidal
6. Comparison: Political Map – scaled to same width
Quartic Authalic
Sinusoidal
7. Comparison: Silhouette Map – scaled to same width
8. Comparison: Tissot Indicatrix, 30° – scaled to same width
Quartic Authalic
Sinusoidal
9. Comparison: Tissot Indicatrix, 15° – scaled to fit
Quartic Authalic
Sinusoidal
10. Comparison: Tissot Indicatrix, 15° – scaled to same width
Quartic Authalic
Sinusoidal


