Bit more robust.

src/eu/simstadt/regionchooser/citygml_parser/BuildingXmlNode.java

@@ -37,7 +37,7 @@ public Point getCenterOfMass() throws XPathParseException, NumberFormatException
 			int coordinatesOffset = (int) offsetAndLength;
 			int coordinatesLength = (int) (offsetAndLength >> 32);
 			String posList = navigator.toRawString(coordinatesOffset, coordinatesLength);
-			String[] coordinates = posList.split(" ");
+			String[] coordinates = posList.trim().split("\\s+");
 			for (int k = 0; k < coordinates.length; k = k + 3) {
 				coordinatesCount++;
 				xTotal += Double.valueOf(coordinates[k]);

test/eu/simstadt/regionchooser/test/RegionExtractorTests.java

@@ -67,4 +67,17 @@ public void testExtract0BuildingsWithWrongCoordinates() throws Throwable {
 		assertTrue(emptyGMLString.contains("<CityModel")); // Header
 		assertTrue(emptyGMLString.contains("</CityModel")); // Footer
 	}
+
+	@Test
+	public void testExtract0BuildingsFromWeirdGML() throws Throwable {
+		//NOTE: Small region, with too many spaces between coordinates
+		String wktPolygon = "POLYGON((0 0, 0 1, 1 1, 1 0, 0 0))";
+		Path repo = Paths.get("../TestRepository");
+		Path citygmlPath = repo.resolve("NewYork.proj/broken_nyc_lod2.gml");
+		String emptyGMLString = RegionExtractor.selectRegionDirectlyFromCityGML(citygmlPath, wktPolygon, "EPSG:32118")
+				.toString();
+		assertEquals(countRegexMatches(emptyGMLString, "<(core:)?cityObjectMember"), 0);
+		assertTrue(emptyGMLString.contains("<core:CityModel")); // Header
+		assertTrue(emptyGMLString.contains("</core:CityModel")); // Footer
+	}
 }