assertNotNull(range);
assertEquals(1d, range.getLowerBound(), EPSILON);
assertEquals(3d, range.getUpperBound(), EPSILON);
double data2[][] = { {1,1,1}, {1,1,1}, {-1,-2,-3} };
dataset.removeSeries("series1");
dataset.addSeries("series2", data2);
range = r.findZBounds(dataset);
assertNotNull(range);
assertEquals(-3d, range.getLowerBound(), EPSILON);
assertEquals(-1d, range.getUpperBound(), EPSILON);