Structure and object to JSON

Save struct and object variables as a JSON file

saves the values in the structure 'data' to a file in JSON format.
Based on the work of Lior Kirsch at: https://uk.mathworks.com/matlabcentral/fileexchange/50965-structure-to-json

Modification by Arthur Y.C. Liu 24/06/2020

Example:
data.name = 'chair';
data.color = 'pink';
data.metrics.imageSize = [1920; 1080];
data.metrics.height = 0.3;
data.metrics.width = 1.3;
saveJSONfile(data, 'out.json');

Output 'out.json':
{
"name" : "chair",
"color" : "pink",
"eye" :
[
1,
0,
0,
0,
1,
0,
0,
0,
1
],
"metrics" :
{
"imageSize" :
[
1920,
1080
],
"height" : 0.3,
"width" : 1.3
}
}