File:Various radii vs. latitude.svg
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Summary
| Description |
English: Various radii vs. latitude |
| Date | |
| Source | Own work |
| Author | Fgnievinski |
Source code
% using https://www.mathworks.com/matlabcentral/fileexchange/44848-geod-yet-another-geodetic-toolbox
lat = linspace(0, 90)';
ell = get_ellipsoid('wgs84');
M = get_radius_meridional(lat, ell);
N = get_radius_normal(lat, ell);
Rc = get_radius_gaussian(lat, ell);
Rm = get_radius_mean(lat, ell);
R = get_radius_geocentric(lat, ell);
%tmp = [N R Rc Rm M];
%lab = {'Transverse', 'Geocentric', 'Gaussian', 'Mean', 'Meridional'};
tmp = [N R Rc M];
lab = {'Transverse', 'Geocentric', 'Gaussian & Mean', 'Meridional'};
%%
figure
hold on
%plot(lat, tmp./1000)
plot(lat, tmp(:,1)./1000, '-r')
plot(lat, tmp(:,2)./1000, '-k')
plot(lat, tmp(:,3)./1000, '-g')
plot(lat, tmp(:,4)./1000, '-b')
xlim([0 90])
xlabel('Latitude (degrees)')
ylabel('Radii of curvature (km)')
h = legend(lab, 'Location','northwest');
set(h, 'Box','off')
grid on
hline(ell.a/1000, ':k')
hline(ell.b/1000, '--k')
text(77, ell.a/1000, sprintf('equatorial\nradius'))
text(82, ell.b/1000, sprintf('polar\nradius'))
Licensing
I, the copyright holder of this work, hereby publish it under the following license:
This file is licensed under the Creative Commons Attribution 4.0 International license.
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
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File history
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| Date/Time | Dimensions | User | Comment | |
|---|---|---|---|---|
| current | 11:10, 29 July 2025 | 560 × 420 (47 KB) | Fgnievinski | replace tilde for ampersand |
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