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API para manipular matrices en C

Utilice la API para manipular matrices en C para crear programas de C que utilicen el tipo mxArray para representar datos de MATLAB

Para escribir programas de C que funcionen con la versión R2017b de MATLAB® o anteriores, utilice las funciones en la API para manipular matrices en C. Estas funciones trabajan con la estructura de datos de mxArray y se emplean para crear funciones de C MEX o aplicaciones del motor C.

Nota

En la medida de lo posible, elija las aplicaciones de C++ en lugar de las de C.

Existen dos versiones de la API para manipular matrices en C.

  • La API compleja entrelazada contiene las funciones de la API para manipular matrices en C a partir de MATLAB R2018a. Para obtener más información, consulte MATLAB Support for Interleaved Complex API in MEX Functions.

  • La API compleja separada contiene las funciones de la API para manipular matrices en C a partir de MATLAB R2017b.

Para ver ejemplos sobre cómo usar estas funciones de biblioteca, consulte:

Precaución

La API para manipular matrices en C no es compatible con API de datos de MATLAB para C++, que admite funcionalidades de C++ moderno. No puede usar las funciones de la API para manipular matrices en C con funciones de las API de MATLAB que se describen en Escribir funciones de C++ que se pueden llamar desde MATLAB (archivos MEX) o en Llamar a MATLAB desde C++.

Tipos de datos de C

mxArrayC type for MATLAB array
mwSizeC type for mxArray size values
mwIndexC type for mxArray index values
mwSignedIndexSigned integer C type for mxArray size values
mxCharType for string array
mxLogicalType for logical array
mxComplexityFlag specifying whether array has imaginary components

Atributos de mxArray

mxIsNumericDetermine whether mxArray is numeric
mxIsComplexDetermine whether data is complex
mxGetNumberOfDimensionsNumber of dimensions in mxArray
mxGetElementSizeNumber of bytes required to store each data element
mxGetDimensionsPointer to dimensions array
mxSetDimensionsModify number of dimensions and size of each dimension
mxGetNumberOfElementsNumber of elements in numeric mxArray
mxCalcSingleSubscriptOffset from first element to desired element
mxGetMNumber of rows in mxArray
mxSetMSet number of rows in mxArray
mxGetNNumber of columns in mxArray
mxSetNSet number of columns in mxArray
mxIsEmptyDetermine whether mxArray is empty
mxIsFromGlobalWSDetermine whether mxArray was copied from MATLAB global workspace

Crear, consultar y acceder a los tipos de datos

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mxCreateDoubleMatrix2-D, double-precision, floating-point array
mxCreateDoubleScalarScalar, double-precision array initialized to specified value
mxCreateNumericMatrix2-D numeric matrix
mxCreateNumericArrayN-D numeric array
mxCreateUninitNumericMatrixUninitialized 2-D numeric matrix
mxCreateUninitNumericArrayUninitialized N-D numeric array
mxIsScalarDetermine whether array is scalar array
mxGetScalarReal component of first data element in array
mxIsDoubleDetermine whether mxArray represents data as double-precision, floating-point numbers
mxGetDoublesElementos de datos reales en el arreglo mxDOUBLE_CLASS
mxSetDoublesSet real data elements in mxDOUBLE_CLASS array
mxIsSingleDetermine whether mxArray represents data as single-precision, floating-point numbers
mxGetSinglesElementos de datos reales en un arreglo mxSINGLE_CLASS
mxSetSinglesSet real data elements in mxSINGLE_CLASS array
mxGetPr(Not recommended) Real data elements in mxDOUBLE_CLASS array
mxSetPr(Not recommended) Set real data elements in mxDOUBLE_CLASS array
mxIsInt8Determine whether mxArray represents data as signed 8-bit integers
mxGetInt8sElementos de datos reales en un arreglo mxINT8_CLASS
mxSetInt8sSet real data elements in mxINT8_CLASS array
mxIsUint8Determine whether mxArray represents data as unsigned 8-bit integers
mxGetUint8sElementos de datos reales en un arreglo mxUINT8_CLASS
mxSetUint8sSet real data elements in mxUINT8_CLASS array
mxIsInt16Determine whether mxArray represents data as signed 16-bit integers
mxGetInt16sReal data elements in mxINT16_CLASS array
mxSetInt16sSet real data elements in mxINT16_CLASS array
mxIsUint16Determine whether mxArray represents data as unsigned 16-bit integers
mxGetUint16sReal data elements in mxUINT16_CLASS array
mxSetUint16sSet real data elements in mxUINT16_CLASS array
mxIsInt32Determine whether mxArray represents data as signed 32-bit integers
mxGetInt32sReal data elements in mxINT32_CLASS array
mxSetInt32sSet real data elements in mxINT32_CLASS array
mxIsUint32Determine whether mxArray represents data as unsigned 32-bit integers
mxGetUint32sReal data elements in mxUINT32_CLASS array
mxSetUint32sSet real data elements in mxUINT32_CLASS array
mxIsInt64Determine whether mxArray represents data as signed 64-bit integers
mxGetInt64sReal data elements in mxINT64_CLASS array
mxSetInt64sSet data elements in mxINT64_CLASS array
mxIsUint64Determine whether mxArray represents data as unsigned 64-bit integers
mxGetUint64sElementos de datos reales en un arreglo mxUINT64_CLASS
mxSetUint64sSet real data elements in mxUINT64_CLASS array
mxGetComplexDoublesElementos de datos complejos en un arreglo mxDOUBLE_CLASS
mxSetComplexDoublesSet complex data elements in mxDOUBLE_CLASS array
mxGetComplexSinglesElementos de datos complejos en un arreglo mxSINGLE_CLASS
mxSetComplexSinglesSet complex data elements in mxSINGLE_CLASS array
mxGetImagDataImaginary data elements in numeric mxArray
mxSetImagDataSet imaginary data elements in numeric mxArray
mxGetPi(Not recommended) Imaginary data elements in mxDOUBLE_CLASS array
mxSetPi(Not recommended) Set imaginary data elements in mxDOUBLE_CLASS array
mxGetComplexInt8sComplex data elements in mxINT8_CLASS array
mxSetComplexInt8sSet complex data elements in mxINT8_CLASS array
mxGetComplexUint8sComplex data elements in mxUINT8_CLASS array
mxSetComplexUint8sSet complex data elements in mxUINT8_CLASS array
mxGetComplexInt16sComplex data elements in mxINT16_CLASS array
mxSetComplexInt16sSet complex data elements in mxINT16_CLASS array
mxGetComplexUint16sComplex data elements in mxUINT16_CLASS array
mxSetComplexUint16sSet complex data elements in mxUINT16_CLASS array
mxGetComplexInt32sComplex data elements in mxINT32_CLASS array
mxSetComplexInt32sSet complex data elements in mxINT32_CLASS array
mxGetComplexUint32sComplex data elements in mxUINT32_CLASS array
mxSetComplexUint32sSet complex data elements in mxUINT32_CLASS array
mxGetComplexInt64sComplex data elements in mxINT64_CLASS array
mxSetComplexInt64sSet complex data elements in mxINT64_CLASS array
mxGetComplexUint64sComplex data elements in mxUINT64_CLASS array
mxSetComplexUint64sSet complex data elements in mxUINT64_CLASS array
mxGetPi(Not recommended) Imaginary data elements in mxDOUBLE_CLASS array
mxSetPi(Not recommended) Set imaginary data elements in mxDOUBLE_CLASS array
mxCreateSparse2-D sparse array
mxCreateSparseLogicalMatrix2-D, sparse, logical array
mxIsSparseDetermine whether input is sparse mxArray
mxGetNzmaxNumber of elements in IR, PR, and PI arrays
mxSetNzmaxSet storage space for nonzero elements
mxGetIrSparse matrix IR array
mxSetIrIR array of sparse array
mxGetJcSparse matrix JC array
mxSetJcJC array of sparse array
mxGetDataData elements in nonnumeric mxArray
mxSetDataSet pointer to data elements in nonnumeric mxArray
mxCreateString1-D array initialized to specified string
mxCreateCharMatrixFromStrings2-D mxChar array initialized to specified value
mxCreateCharArrayN-D mxChar array
mxIsCharDetermine whether input is mxChar array
mxGetCharsPointer to character array data
mxIsLogicalDetermine whether mxArray is of type mxLogical
mxIsLogicalScalarDetermine whether scalar array is of type mxLogical
mxIsLogicalScalarTrueDetermine whether scalar array of type mxLogical is true
mxClassIDEnumerated value identifying class of array
mxCreateLogicalArrayN-D logical array
mxCreateLogicalMatrix2-D logical array
mxCreateLogicalScalarScalar, logical array
mxGetLogicalsPointer to logical array data
mxIsClassDetermine whether mxArray is object of specified class
mxGetClassIDClass of mxArray
mxGetClassNameClass of mxArray as string
mxSetClassNameStructure array to MATLAB object array
mxGetPropertyValue of public property of MATLAB object
mxSetPropertySet value of public property of MATLAB object
mxCreateStructMatrix2-D structure array
mxCreateStructArrayN-D structure array
mxIsStructDetermine whether mxArray is structure
mxGetFieldPointer to field value from structure array, given index and field name
mxSetFieldSet field value in structure array, given index and field name
mxGetNumberOfFieldsNumber of fields in structure array
mxGetFieldNameByNumberPointer to field name from structure array, given field number
mxGetFieldNumberField number from structure array, given field name
mxGetFieldByNumberPointer to field value from structure array, given index and field number
mxSetFieldByNumberSet field value in structure array, given index and field number
mxAddFieldAdd field to structure array
mxRemoveFieldRemove field from structure array
mxCreateCellMatrix2-D cell array
mxCreateCellArrayN-D cell array
mxIsCellDetermine whether mxArray is cell array
mxGetCellPointer to element in cell array
mxSetCellSet contents of cell array

Eliminar y duplicar mxArray

mxDestroyArrayFree dynamic memory allocated by MXCREATE* functions
mxDuplicateArrayMake deep copy of array

Convertir mxArray

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mxMakeArrayComplexConvert real mxArray to complex, preserving real data
mxMakeArrayRealConvert complex mxArray to real, preserving real data
mxArrayToStringArray to string
mxArrayToUTF8StringArray to string in UTF-8 encoding
mxGetStringmxChar array to C-style string or Fortran character array
mxSetClassNameStructure array to MATLAB object array

Administración de memoria de datos

mxCallocAllocate dynamic memory for array, initialized to 0, using MATLAB memory manager
mxMallocAllocate uninitialized dynamic memory using MATLAB memory manager
mxReallocReallocate dynamic memory using MATLAB memory manager
mxFreeFree dynamic memory allocated by mxCalloc, mxMalloc, mxRealloc, mxArrayToString, or mxArrayToUTF8String functions

Aserciones

mxAssertCheck assertion value for debugging purposes
mxAssertSCheck assertion value without printing assertion text

Constantes

mxIsInfDetermine whether input is infinite
mxIsFiniteDetermine whether input is finite
mxIsNaNDetermine whether input is NaN (Not-a-Number)

Temas