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Conversión de tipos de datos

Convierta entre arreglos numéricos, cadenas y arreglos de caracteres, fechas y horas, arreglos de celdas, estructuras o tablas

MATLAB^® tiene muchas funciones para convertir valores de un tipo de datos a otro para su uso en diferentes contextos. Por ejemplo, puede convertir números en texto y, a continuación, añadirlos a etiquetas de gráficas o nombres de archivos. Puede representar números como sus valores binarios o hexadecimales. MATLAB proporciona funciones para las conversiones entre arreglos numéricos, cadenas y arreglos de caracteres y arreglos categorical, datetime y duration. También puede convertir entre los tipos de datos que agrupan datos en contenedores, como los arreglos de celdas, estructuras, tablas y horarios. En esos casos, los valores de datos permanecen igual, pero se almacenan y se accede a ellos en un tipo diferente de contenedor.

Funciones

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Números y texto

Convertir números a texto

`string`	String array
`char`	Character array
`cellstr`	Convert to cell array of character vectors
`int2str`	Convert integers to characters
`mat2str`	Convert matrix to characters
`num2str`	Convert numbers to character array

Convertir texto a números

`str2double`	Convert strings to double precision values
`str2num`	Convert character array or string to numeric array
`native2unicode`	Convert numeric bytes to Unicode character representation
`unicode2native`	Convert Unicode character representation to numeric bytes

Números binarios y hexadecimales

`base2dec`	Convert text representation of base-`n` integer to double value
`bin2dec`	Convert text representation of binary integer to double value
`dec2base`	Convert decimal integer to its base-`n` representation
`dec2bin`	Convert decimal integer to its binary representation
`dec2hex`	Convert decimal integer to its hexadecimal representation
`hex2dec`	Convert text representation of hexadecimal integer to double value
`hex2num`	Convert IEEE hexadecimal format to double-precision number
`num2hex`	Convert single- and double-precision numbers to IEEE hexadecimal format

Fechas y horas

Convertir valores a fechas y horas

`datetime`	Arrays that represent points in time
`duration`	Lengths of time in fixed-length units

Convertir fechas y horas a texto

`string`	String array
`char`	Character array
`cellstr`	Convert to cell array of character vectors

Arreglos categóricos, tablas y horarios

Arreglos categóricos

categorical Array that contains values assigned to categories

Tablas

`table2array`	Convert table to homogeneous array
`table2cell`	Convert table to cell array
`table2struct`	Convert table to structure array
`array2table`	Convert homogeneous array to table
`cell2table`	Convert cell array to table
`struct2table`	Convert structure array to table

Horarios

`array2timetable`	Convert homogeneous array to timetable
`table2timetable`	Convert table to timetable
`timetable2table`	Convert timetable to table

Estructuras y arreglos de celdas

`cell2mat`	Convert cell array to ordinary array of the underlying data type
`cell2struct`	Convert cell array to structure array
`mat2cell`	Convert array to cell array whose cells contain subarrays
`num2cell`	Convert array to cell array with consistently sized cells
`struct2cell`	Convert structure to cell array

Temas

Convert Text to Numeric Values

Convert text to arrays of numeric values. Text can represent floating-point values, dates and times, and hexadecimal and binary numbers. If text represents dates and times, then you can convert the text to datetime or duration values.

Convert Numeric Values to Text

Convert numeric values to text. Text can represent floating-point values, either with or without exponential notation, or hexadecimal or binary digits. Use these conversions to add numbers to text such as plot labels or titles.

Unicode and ASCII Values

MATLAB stores all characters as Unicode characters. Both strings and character vectors use the same encoding. You can convert characters to their Unicode code values, and numbers to characters.

Hexadecimal and Binary Values

Specify hexadecimal and binary values either as literals or as text. Hexadecimal and binary literals are stored as integers. You can convert text representing hexadecimal and binary values to numbers, and numbers to text representations.

Convert Between Datetime Arrays, Numbers, and Text

While datetime is the recommended data type for representing points in time, you might need to work with dates and time stored as date strings, date vectors, and serial date numbers.

Convert Text in Table Variables to Categorical

This example shows how to convert a variable in a table from a cell array of character vectors to a categorical array.

Valid Combinations of Unlike Classes

If you include elements of unlike classes in a matrix, MATLAB converts some elements so that all elements of the resulting matrix are of the same type. Data type conversion is done with respect to a preset precedence of classes.