@Test
public void testFindClosestInArray() throws Exception {
double[] values = {-175, -50, 50, 175};
assertEquals(0, RegularGaussianGrid.findClosestInArray(values, -178));
assertEquals(1, RegularGaussianGrid.findClosestInArray(values, -60));
assertEquals(2, RegularGaussianGrid.findClosestInArray(values, 30));
assertEquals(3, RegularGaussianGrid.findClosestInArray(values, 160));
assertEquals(3, RegularGaussianGrid.findClosestInArray(values, 179));
}
@Test
public void testRegularGird() throws Exception {
RegularGaussianGrid gaussianGrid = new RegularGaussianGrid(64);
assertEquals(64, gaussianGrid.getNumRows());
assertEquals(128, gaussianGrid.getNumCols(0));
assertEquals(128, gaussianGrid.getNumCols(32));
assertEquals(128, gaussianGrid.getNumCols(63));
assertEquals(2, gaussianGrid.getRowIndex(270));
assertEquals(64 * 128, gaussianGrid.getNumBins());
assertEquals(0, gaussianGrid.getFirstBinIndex(0));
assertEquals(10 * 128, gaussianGrid.getFirstBinIndex(10));
assertEquals(50 * 128, gaussianGrid.getFirstBinIndex(50));
assertEquals(-51.62573, gaussianGrid.getCenterLat(50), 1.0e-6);
assertEquals(-87.86379, gaussianGrid.getCenterLat(63), 1.0e-6);
// binIndex=300 -> row=2,col=44
assertEquals(82.31291, gaussianGrid.getCenterLatLon(300)[0], 1.0e-6);
assertEquals(-54.84375, gaussianGrid.getCenterLatLon(300)[1], 1.0e-6);
// lat=45.0,lon=90.0 -> row=15,col=96 -> 2016
assertEquals(2016, gaussianGrid.getBinIndex(45.0, 90.0));
}