public static void CreateGeohashData(ConsoleOutput console, TimeZoneShapeFileReader inputShapefile, string outputPath) { var features = inputShapefile.ReadShapeFile().AsParallel() .Select(x => { x.Geometry = x.Geometry.Simplify(); return(x); }) .ToList(); PreLoadTimeZones(features); console.WriteMessage("Polygons loaded and simplified"); var geohashes = features.AsParallel() .Select(x => new { TimeZone = x, Geohashes = GeohashTree.GetGeohashes(x.Geometry) }) .ToList(); console.WriteMessage("Geohashes generated for polygons"); foreach (var hash in geohashes) { foreach (var g in hash.Geohashes) { AddResult(g, hash.TimeZone); } } console.WriteMessage("Geohash tree built"); WorldBoundsTreeNode.PrepareForOutput(); console.WriteMessage("Geohash tree preparing for output"); WriteGeohashDataFile(outputPath); console.WriteMessage("Data file written"); WriteLookup(outputPath); console.WriteMessage("Lookup file written"); }
public static void CreateGeohashData(ConsoleOutput console, TimeZoneShapeFileReader inputShapefile, string outputPath) { var features = inputShapefile.ReadShapeFile().AsParallel() .Select(x => { x.Geometry = x.Geometry.Simplify(); return x; }) .ToList(); PreLoadTimeZones(features); console.WriteMessage("Polygons loaded and simplified"); var geohashes = features.AsParallel() .Select(x => new { TimeZone = x, Geohashes = GeohashTree.GetGeohashes(x.Geometry) }) .ToList(); console.WriteMessage("Geohashes generated for polygons"); foreach (var hash in geohashes) foreach (var g in hash.Geohashes) AddResult(g, hash.TimeZone); console.WriteMessage("Geohash tree built"); WorldBoundsTreeNode.PrepareForOutput(); console.WriteMessage("Geohash tree preparing for output"); WriteGeohashDataFile(outputPath); console.WriteMessage("Data file written"); WriteLookup(outputPath); console.WriteMessage("Lookup file written"); }
public static void CreateGeohashData(ConsoleOutput console, TimeZoneShapeFileReader inputShapefile, string outputPath) { console.WriteMessage("Loading polygons..."); var features = inputShapefile.ReadShapeFile() .SelectMany(x => { // Expand MultiPolygons to individual Polygons var mp = x.Geometry as MultiPolygon; return(mp != null ? mp.Geometries.Select((y, i) => new TimeZoneFeature { TzName = x.TzName, Geometry = y, MultiPolyIndex = i }) : new[] { x }); }) .Where(x => x.Geometry.Area > 0) .OrderBy(x => x.TzName).ThenBy(x => x.MultiPolyIndex) .ToList(); PreLoadTimeZones(features); console.WriteMessage("Polygons loaded."); var geohashes = features .AsParallel() .Select(x => { var indexString = x.MultiPolyIndex >= 0 ? $"[{x.MultiPolyIndex}]" : ""; console.WriteMessage($"Generating geohash for {x.TzName}" + indexString); return(new { TimeZone = x, Geohashes = GeohashTree.GetGeohashes(x.Geometry) }); }) .ToList(); console.WriteMessage("Geohashes generated for polygons."); foreach (var hash in geohashes) { foreach (var g in hash.Geohashes) { AddResult(g, hash.TimeZone); } } console.WriteMessage("Geohash tree built."); WorldBoundsTreeNode.PrepareForOutput(); console.WriteMessage("Geohash tree preparing for output."); WriteGeohashDataFile(outputPath); console.WriteMessage("Data file written."); WriteLookup(outputPath); console.WriteMessage("Lookup file written."); console.WriteMessage("Done!"); }