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Code calculates the minimum distance from input vector of lat/lon points to any coastal point (including major lakes).
Two distance options: great circle distance, which is precise but slow (non-vectorized); mean distance with cos(latitude) weighting, which is less precise but fast.
Also includes option to only return distances less than a threshold value. This greatly increases speed for cases with many input lat/lon points located in a relatively small region of Earth.
Code uses coast.mat data that comes with MATLAB distribution, and it uses vdist function from MATLAB file exchange for great circle calculation (included in this .zip file).
Cite As
Dan Chavas (2026). dist_from_coast.zip (https://uk.mathworks.com/matlabcentral/fileexchange/47632-dist_from_coast-zip), MATLAB Central File Exchange. Retrieved .
Acknowledgements
Inspired by: Vectorized geodetic distance and azimuth on the WGS84 earth ellipsoid
General Information
- Version 1.2.0.0 (99.7 KB)
MATLAB Release Compatibility
- Compatible with any release
Platform Compatibility
- Windows
- macOS
- Linux
| Version | Published | Release Notes | Action |
|---|---|---|---|
| 1.2.0.0 | commented out test plot in file |
||
| 1.1.0.0 | 2014-08-26 : added option to only return distances less than a threshold value. This greatly increases speed for cases with many input lat/lon points located in a relatively small region of Earth. |
||
| 1.0.0.0 |
