public float[][] clone2df(float[][] orig){
		int ii = orig.length;
		int jj = orig[0].length;
		float[][] temp = new float[ii][jj];
		for (int i = 0; i<ii; i++){
			for(int j = 0; j < jj; j++){
				temp[i][j] = orig[i][j];
			}
		}
		return temp;
	}