File:Various radii vs. latitude.svg
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Size of this PNG preview of this SVG file: 560 × 420 pixels. Other resolutions: 320 × 240 pixels | 640 × 480 pixels | 1,024 × 768 pixels | 1,280 × 960 pixels | 2,560 × 1,920 pixels.
Original file (SVG file, nominally 560 × 420 pixels, file size: 47 KB)
Summary
| Description |
English: Various radii vs. latitude |
| Date | |
| Source | Own work |
| Author | Fgnievinski |
| SVG development |
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
Fgnievinski, the copyright holder of this work, hereby publishes it under the following license:
This file is licensed under the Creative Commons Attribution 4.0 International license.
Attribution:
- 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 | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 19:10, 29 July 2025 | | 560 × 420 (47 KB) | wikimediacommons>Fgnievinski | replace tilde for ampersand |
File usage
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