public void Center() { var boxFC = JsonConvert.DeserializeObject <FeatureCollection>(Tools.GetResource("center.box.geojson")); var blockFC = JsonConvert.DeserializeObject <FeatureCollection>(Tools.GetResource("center.block.geojson")); var boxFcCenter = Turf.Center(boxFC); boxFcCenter.Properties["marker-color"] = "#f0f"; var boxFcCenterArray = Turf.GetCoord(boxFcCenter); Assert.AreEqual(boxFcCenterArray[0], 65.56640625, 0.00001); Assert.AreEqual(boxFcCenterArray[1], 43.59448261855401, 0.00001); var blockFcCenter = Turf.Center(blockFC.Features[0]); blockFcCenter.Properties["marker-color"] = "#f0f"; var blockFcCenterArray = Turf.GetCoord(blockFcCenter); Assert.AreEqual(blockFcCenterArray[0], -114.02911397119072, 0.00001); Assert.AreEqual(blockFcCenterArray[1], 51.050271120392566, 0.00001); boxFC.Features.Add(boxFcCenter); blockFC.Features.Add(blockFcCenter); Console.WriteLine(JsonConvert.SerializeObject(boxFC)); Console.WriteLine(JsonConvert.SerializeObject(blockFC)); }