My Projection Collection:
Compare Projections
Eckert IV vs. Nell-Hammer modified
Eckert IV | Nell-Hammer modified | |
---|---|---|
Creator | Max Eckert-Greifendorff (1906) | H.H. Ernst von Hammer, Karlheinz Wagner (1949) |
Group | Pseudocylindric | Pseudocylindric |
Property | Equal-area | Equal-area |
Other Names | — | — |
Remarks | — | The original Nell-Hammer (1900) was derived from the Nell projection. This modified version was introduced in 1949 by Karlheinz Wagner and allows to set arbitrary standard parallels. The image shows the modified Nell-Hammer with standard parallels at ≈ 42°12′ N/S, which were chosen by Wagner to offer a closely matching alternative to Eckert IV which can be calculated using a considerably easier formula. (The exact value that I used for the standard parallels is 42°12′49.284″ – not that it really matters…) |
recommended comparisons | Equal Earth Hufnagel 10 Hufnagel 9 Natural Earth II Nell-Hammer modified Wagner IV |
Eckert IV |
This pairing is among the list of recommended pairings – but why? Modified Nell-Hammer is intended to be an easier to calculate alternative to Eckert IV. |
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
Eckert IV
![Eckert IV](/img/political/eckert-4.png)
Nell-Hammer modified
![Nell-Hammer modified](/img/political/nell-hammer-modified.png)
3. Comparison: Silhouette Map – scaled to fit
![Eckert IV Silhouette Map](/img/rot/eckert-4.png)
![Nell-Hammer modified Silhouette Map](/img/gruen/nell-hammer-modified.png)
4. Comparison: Tissot Indicatrix, 30° – scaled to fit
Eckert IV
![Eckert IV Tissot Indicatrix](/img/tissot-30/eckert-4.jpg)
Nell-Hammer modified
![Nell-Hammer modified Tissot Indicatrix](/img/tissot-30/nell-hammer-modified.jpg)
5. Comparison: Physical Map – scaled to same width
Eckert IV
![Eckert IV](/img/jpg-w/eckert-4.jpg)
Nell-Hammer modified
![Nell-Hammer modified](/img/jpg-w/nell-hammer-modified.jpg)
6. Comparison: Political Map – scaled to same width
Eckert IV
![Eckert IV](/img/political-w/eckert-4.png)
Nell-Hammer modified
![Nell-Hammer modified](/img/political-w/nell-hammer-modified.png)
7. Comparison: Silhouette Map – scaled to same width
![Eckert IV Silhouette Map](/img/rot-w/eckert-4.png)
![Nell-Hammer modified Silhouette Map](/img/gruen-w/nell-hammer-modified.png)
8. Comparison: Tissot Indicatrix, 30° – scaled to same width
Eckert IV
![Eckert IV Tissot Indicatrix](/img/tissot-30-w/eckert-4.jpg)
Nell-Hammer modified
![Nell-Hammer modified Tissot Indicatrix](/img/tissot-30-w/nell-hammer-modified.jpg)
9. Comparison: Tissot Indicatrix, 15° – scaled to fit
Eckert IV
![Eckert IV Tissot Indicatrix](/img/tissot-15/eckert-4.jpg)
Nell-Hammer modified
![Nell-Hammer modified Tissot Indicatrix](/img/tissot-15/nell-hammer-modified.jpg)
10. Comparison: Tissot Indicatrix, 15° – scaled to same width
Eckert IV
![Eckert IV Tissot Indicatrix](/img/tissot-15-w/eckert-4.jpg)
Nell-Hammer modified
![Nell-Hammer modified Tissot Indicatrix](/img/tissot-15-w/nell-hammer-modified.jpg)