reading data from Matlab into Java

Question

I'm trying to read a matrix produced in Matlab into a 2D array in java. I've been using jmatio so far for writing from java to a .mat file (successfully), but now can't manage to go the other way around. I've managed to import a matrix into an MLArray object using this code:

matfilereader = new MatFileReader("filename.mat");
MLArray j = matfilereader.getMLArray("dataname");

But other than getting its string representation I couldn't manage to access the data itself. I found no example for this or documentation on the library itself, and I actually wrote a function to parse the intire string into a double[][] array but that's only good if the matrix is smaller than 1000 items...

Would be grateful for any experience or tips, thanks,

Amir

Answer 1

matfilereader.getMLArray has several subclasses to access different kinds of data in MLArray object.

To represent double array you can cast MLArray to MLDouble:

MLDouble j = (MLDouble)matfilereader.getMLArray("dataname");