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 |
|
|
Remarks | Independently presented by Oscar Sherman Adams (1945). | — |
recommended comparisons | Eckert-Greifendorff Sinusoidal |
Craster’s parabolic Eckert-Greifendorff Putnins P6 Quartic Authalic |
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. |
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
![Quartic Authalic](/img/political/quartic-authalic.png)
Sinusoidal
![Sinusoidal](/img/political/sinusoidal.png)
3. Comparison: Silhouette Map – scaled to fit
![Quartic Authalic Silhouette Map](/img/rot/quartic-authalic.png)
![Sinusoidal Silhouette Map](/img/gruen/sinusoidal.png)
4. Comparison: Tissot Indicatrix, 30° – scaled to fit
Quartic Authalic
![Quartic Authalic Tissot Indicatrix](/img/tissot-30/quartic-authalic.jpg)
Sinusoidal
![Sinusoidal Tissot Indicatrix](/img/tissot-30/sinusoidal.jpg)
5. Comparison: Physical Map – scaled to same width
Quartic Authalic
![Quartic Authalic](/img/jpg-w/quartic-authalic.jpg)
Sinusoidal
![Sinusoidal](/img/jpg-w/sinusoidal.jpg)
6. Comparison: Political Map – scaled to same width
Quartic Authalic
![Quartic Authalic](/img/political-w/quartic-authalic.png)
Sinusoidal
![Sinusoidal](/img/political-w/sinusoidal.png)
7. Comparison: Silhouette Map – scaled to same width
![Quartic Authalic Silhouette Map](/img/rot-w/quartic-authalic.png)
![Sinusoidal Silhouette Map](/img/gruen-w/sinusoidal.png)
8. Comparison: Tissot Indicatrix, 30° – scaled to same width
Quartic Authalic
![Quartic Authalic Tissot Indicatrix](/img/tissot-30-w/quartic-authalic.jpg)
Sinusoidal
![Sinusoidal Tissot Indicatrix](/img/tissot-30-w/sinusoidal.jpg)
9. Comparison: Tissot Indicatrix, 15° – scaled to fit
Quartic Authalic
![Quartic Authalic Tissot Indicatrix](/img/tissot-15/quartic-authalic.jpg)
Sinusoidal
![Sinusoidal Tissot Indicatrix](/img/tissot-15/sinusoidal.jpg)
10. Comparison: Tissot Indicatrix, 15° – scaled to same width
Quartic Authalic
![Quartic Authalic Tissot Indicatrix](/img/tissot-15-w/quartic-authalic.jpg)
Sinusoidal
![Sinusoidal Tissot Indicatrix](/img/tissot-15-w/sinusoidal.jpg)