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converting vector<vector<double>> to mwArray

4 Ansichten (letzte 30 Tage)
hnde
hnde am 22 Feb. 2011
Hello,
I am trying to pass a 2 dimensional vector (a matrix) in C++ to a C++ share library matlab function compiled by Matlab Compiler.
I am trying to convert this vector, for example myvect, to the mwArray type so that by matlab function can use it. The myvect has the following format in C++,
vector<vector<double>> myvect(2);
myvect[0].push_back(0.1);
myvect[0].push_back(0.2);
myvect[0].push_back(10);
myvect[0].push_back(20);
I am trying:
mwArray mymtrx(2, 2, mxDOUBLE_CLASS);
mymtrx.SetData(&mymtrx[0][0], 4);
But it does not work. The data in mymtrx is not the same as the data in myvect.
How can I convert myvectinto mwArray type?
Thank you

Antworten (1)

Kaustubha Govind
Kaustubha Govind am 22 Feb. 2011
Did you have a typo calling SetData?
mwArray mymtrx(2, 2, mxDOUBLE_CLASS);
mymtrx.SetData(&myvect[0][0], 4);
  4 Kommentare
hnde
hnde am 23 Feb. 2011
Thank you for your answer.
It is exactly as you said. It works for the vector<double> case, but not for the vector<vector<double>> case.
I am out of ideas on how to do this.
Thank you for all your help.
Jonathan Ingber Katz
Jonathan Ingber Katz am 15 Nov. 2020
As Kaustubha Govind said, this in the general case will not work for a vector of vectors. I believe the best way to do this is to recast your vector of vectors as a single vector.

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