diff --git a/java/source/infodynamics/utils/MatrixUtils.java b/java/source/infodynamics/utils/MatrixUtils.java
index a820795..baae523 100755
--- a/java/source/infodynamics/utils/MatrixUtils.java
+++ b/java/source/infodynamics/utils/MatrixUtils.java
@@ -1268,6 +1268,15 @@ public class MatrixUtils {
 		return newMatrix;
 	}
 	
+	public static void copyIntoMatrix(double[][] source, int fromRow, int fromCol,
+			double[][] dest, int toRow, int toCol, int rows, int cols) {
+		for (int r = 0; r < rows; r++) {
+			for (int c = 0; c < cols; c++) {
+				dest[toRow + r][toCol + c] = source[fromRow + r][fromCol + c];
+			}
+		}
+	}
+	
 	public static double[] extractSelectedTimePoints(double[] data, int[] timePoints) {
 		double[] extracted = new double[timePoints.length];
 		for (int t = 0; t < timePoints.length; t++) {