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3. 为Matlab 构造设定矩阵
原标题:Set matrix field to Matlab struct

我正在将Matlab代码与C++编码相联,该编码包含engine.h

我制造了几个微量和矩阵领域的结构。 首先,我使用指挥线星座,即书写助手法。

void matlabSetStruct(Engine * ep, const std::string structure, 
                                            const std::string field, T value)
{
    ostringstream ss;
    ss << value;
    std::string setStruct = structure + "." + field + " = " + ss.str() + ";";
    matlabExecute(ep, setStruct);
}

我现在要把矩阵领域补充到同样的方向。 我可以成功产生新的矩阵变量,名称为<代码>MyStruct。 外地,但不承认为现有结构代码的领域,而是作为新的变量。 我正在使用

int ret = engPutVariable(ep,patis_name.c_str(str)(阵列);

如果Iwhos ,我就收到。

  MyStruct                        1x1                 7176  struct              
  MyStruct.CT_F1                  1x1795             14360  double              
  MyStruct.CT_F2                  1x1795             14360  double    

--> matrix fields are independent variables

我发现<代码>mxSet Field,但这是为了将一个领域添入一个以<代码>mxCreateStructrix

最佳回答

One option is to create a temp variable, and then to assign its value to a field of the struct:

// Create temp variable
mxArray* array = convertVectorToMxArray(mat, nb_rows, nb_cols);  
const std::string temp_name = array_name + "_temp";
int ret = engPutVariable(ep, temp_name.c_str(), array);

// Set variable to struct field
const std::string cmd = std::string(array_name + " = " + temp_name + "; ");
matlabExecute(ep, cmd);

// Delete array
mxDestroyArray(array);
问题回答

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