`jsonencode`

Converts MATLAB values into JSON text.

Category: Data Import and Analysis > Data Import and Export

Syntax

jsonText = jsonencode(value)

Returns the JSON text for a struct, array, cell array, string or scalar.

jsonText = jsonencode(value, 'PrettyPrint', true)

Adds line breaks and indentation.

Description

Scalars become numbers, vectors become arrays, matrices become arrays of row arrays, and structs become objects. A struct array becomes an array of objects, and a cell array becomes an array of its elements. Logical values become true or false, NaN becomes null, and an empty array becomes []. Numbers are written with 15 significant digits.

Input arguments

value: Value to encode.
'PrettyPrint': Logical flag for readable, indented output.

Output arguments

jsonText: Character vector holding the JSON.

Example

Encode structs and arrays

jsonencode(struct('a', 1, 'b', [1 2 3]))
jsonencode(struct('n', [1 2; 3 4], 's', 'x', 'e', []))
jsonencode({1, 'a', true})
jsonencode(struct('a', {1, 2}))
jsonencode(pi)

Output

ans = '{"a":1,"b":[1,2,3]}'
ans = '{"n":[[1,2],[3,4]],"s":"x","e":[]}'
ans = '[1,"a",true]'
ans = '[{"a":1},{"a":2}]'
ans = '3.14159265358979'

jsonencode