open a web api and parse results in json in matlab

To open a web API and parse the results in JSON format in MATLAB, you can use the "webread" function provided by MATLAB. Here's the basic syntax:

main.m
url = 'https://api.example.com/data';
jsonData = webread(url);
63 chars
3 lines

In the first line, you define the URL of the web API you want to access. In the second line, you use the "webread" function to download the data from the API and store it as a JSON string in the "jsonData" variable.

Once you have the JSON data, you can parse it into a MATLAB variable using the "jsondecode" function:

main.m
data = jsondecode(jsonData);
29 chars
2 lines

This will convert the JSON data into a MATLAB struct, where the JSON object keys become field names in the struct.

From here, you can access the data in the struct just like any other MATLAB variable. For example, if the JSON data contains an array of objects with "name" and "value" fields, you could extract the values like this:

main.m
names = {data.name};
values = [data.value];
44 chars
3 lines

Note that the curly braces around "data.name" are used to extract the "name" field from each object in the array and return it as a cell array of strings. The square brackets around "data.value" are used to extract the "value" field from each object in the array and return it as a numeric array.

Overall, this is a simple way to access web API data in MATLAB and parse it into a usable format.