code: public File transform(File inputMatrixFile, MatrixIO.Format format) 
               throws IOException {
          // create a temp file for the output
          File output = File.createTempFile(
                  inputMatrixFile.getName() + ".matrix-transform", ".dat");
          output.deleteOnExit();
          transform(inputMatrixFile, format, output);
          return output;
      }
docs: {@inheritDoc}