MATLAB Geocoding Tutorial

This is a tutorial for using the OpenCage geocoding API in MATLAB.

Alexander Dentler has created two MATLAB functions, one for forward geocoding OpenCageForward, and one for reverse OpenCageReverse.

Please find the code for each in the opencage-matlab repository on GitHub.

Background

Example

%%  INIT
clear
clc
close all

%%  Parameters
key='YOUR-API-KEY';

%%  Forward search
q='Prinsengracht 263-267, 1016 GV Amsterdam, Netherlands';
%   plain search with one result
[results]=OpenCageForward(key,q);
%   first result gives us longitude and latitude of the road we are
%   looking for, second result is just Amsterdam
disp(results.results(1).formatted)
disp('is a')
disp(results.results(1).components.x_type)
disp(results.results(2).formatted)
disp('is a')
disp(results.results(2).components.x_type)
%   Let us say we are interested in the geo info of London, and let us
%   allow for up to the maximum number of results: 100
q='London';
[results]=OpenCageForward(key,q,'limit','100');
%   we get 50 results. Say we want to restrict our search to the UK. We set
[results]=OpenCageForward(key,q,'limit','100','countrycode','uk');
%   we get 3 results
disp(results.results(1).formatted)
disp('is a')
disp(results.results(1).components.x_type)
disp(results.results(2).formatted)
disp('is a')
disp(results.results(2).components.x_type)
disp(results.results(3).formatted)
disp('is a')
disp(results.results(3).components.x_type)


%%  Reverse search
q='0 0';
[results]=OpenCageReverse(key,'0 0');