Set pointer to imaginary data elements in array
Pointer to an mxArray
Pointer to the first element of an array. Each element in the array contains the imaginary component of a value. The array must be in dynamic memory; call mxCalloc to allocate this memory. Do not use the ANSI® C calloc function, which can cause memory alignment issues leading to program termination. If pi points to static memory, memory errors will result when the array is destroyed.
mxSetImagData is like mxSetPi, except that in C, its pi argument is a void *. Use this function on numeric arrays with contents other than double.
This function does not free any memory allocated for existing data that it displaces. To free existing memory, call mxFree on the pointer returned by mxGetImagData before you call mxSetImagData.