static void FixMissingElevation(PoiList poiList, string tiffDir)
{
foreach (var groupLon in poiList.GroupBy(x => (int)x.Longitude))
{
//
foreach (var groupLat in groupLon.GroupBy(x => (int)x.Latitude))
{
//var _data = new List<GpsLocation>();
var tiffFile = GetElevationFileName(groupLat.Key, groupLon.Key);
string filePath = $@"{tiffDir}{tiffFile}";
var ed = new ElevationTileConvertor(new GpsLocation(groupLon.Key, groupLat.Key, 0));
ed.ReadFromTiff(filePath);
{
foreach (var poi in groupLat)
{
var loc = new GpsLocation()
{
Latitude = poi.Latitude, Longitude = poi.Longitude
};
try
{
if (ed.IsLoaded())
{
if (poi.Altitude < -0.0000001 || poi.Altitude > 0.0000001)
{
continue;
}
if (ed.TryGetElevation(loc, out var ele))
{
poi.Altitude = ele;
}
}
}
catch (Exception ex)
{
Console.WriteLine($"Exception thrown ({poi.Name}), Details: {ex.Message}");
}
}
}
}
}
}
private static void WriteToGpx(PoiList poiList, string outputFile, string category)
{
XmlWriter xmlWriter = XmlWriter.Create(outputFile);
xmlWriter.WriteStartDocument();
xmlWriter.WriteStartElement("gpx", "http://www.topografix.com/GPX/1/1");
int errorNoName = 0;
foreach (var item in poiList)
{
WriteWptElementToFile(item, xmlWriter, category, ref errorNoName);
}
xmlWriter.WriteEndElement();
xmlWriter.WriteEndDocument();
xmlWriter.Close();
}
// metric coordinates
public static IFeatureSet ApplyBuffer(string filter, double distance, bool isMin, string workdir)
{
string filename = PoiList.GetShapefile(filter);
IFeatureSet fs = FeatureSet.Open(CSV_FILE_DIR + '/' + filename);
IFeatureSet bs = fs.Buffer(distance, false);
if (isMin)
{
bs = Complement(bs, workdir);
}
for (int i = 0; ; i++)
{
if (!File.Exists(WORKSPACE_DIR + workdir + "/buf" + i + ".shp"))
{
bs.SaveAs(WORKSPACE_DIR + workdir + "/buf" + i + ".shp", true);
break;
}
}
bs.SaveAs(WORKSPACE_DIR + workdir + "/buf.shp", true);
return(bs);
}
static PoiList ReadFromOsm(string srcFile, bool excludeNoName, bool excludeNoElevation)
{
XmlDocument OSMDoc = new XmlDocument();
OSMDoc.Load(srcFile);
XmlNodeList nl = OSMDoc.SelectNodes("/osm/node");
int totalRead = 0;
int totalWritten = 0;
int errorNoElevation = 0;
int errorNoName = 0;
var poiList = new PoiList();
foreach (XmlElement xelement in nl)
{
totalRead++;
var lat = xelement.Attributes.GetNamedItem("lat").Value;
var lon = xelement.Attributes.GetNamedItem("lon").Value;
string name = "";
string ele = "";
string wikipedia = "";
string wikidata = "";
XmlNodeList tags = xelement.SelectNodes("tag");
foreach (XmlElement nameElement in tags)
{
if (nameElement.Attributes.GetNamedItem("k").Value == "name")
{
name = nameElement.Attributes.GetNamedItem("v").Value;
}
if (nameElement.Attributes.GetNamedItem("k").Value == "ele")
{
ele = nameElement.Attributes.GetNamedItem("v").Value;
}
if (nameElement.Attributes.GetNamedItem("k").Value == "wikidata")
{
wikidata = nameElement.Attributes.GetNamedItem("v").Value;
}
if (nameElement.Attributes.GetNamedItem("k").Value == "wikipedia")
{
wikipedia = nameElement.Attributes.GetNamedItem("v").Value;
}
}
if (String.IsNullOrEmpty(name))
{
errorNoName++;
if (excludeNoName)
{
continue;
}
}
if (String.IsNullOrEmpty(ele) && excludeNoElevation)
{
errorNoElevation++;
if (excludeNoElevation)
{
continue;
}
}
if (ele.EndsWith("m"))
{
ele = ele.Remove(ele.Length - 1, 1);
}
try
{
poiList.Add(
new Poi()
{
Latitude = double.Parse(lat, CultureInfo.InvariantCulture),
Longitude = double.Parse(lon, CultureInfo.InvariantCulture),
Altitude = string.IsNullOrEmpty(ele) ? 0 : double.Parse(ele, CultureInfo.InvariantCulture),
Wikidata = wikidata,
Wikipedia = wikipedia,
Name = name
});
}
catch (Exception ex)
{
Console.WriteLine("Error:" + ex.Message);
Console.WriteLine($" Name: {name}");
Console.WriteLine($" Latitude: {lat}");
Console.WriteLine($" Longitude: {lon}");
Console.WriteLine($" Altitude: {ele}");
}
}
WriteStatistics(totalRead, errorNoName, errorNoElevation);
return(poiList);
}
static public PoiList Parse(string xml, PoiCategory category, PoiCountry country, Guid source, Action <int> OnStart = null, Action <int> OnProgress = null)
{
var lastNode = "";
try
{
var listOfPoi = new PoiList();
XmlDocument gpxDoc = new XmlDocument();
gpxDoc.LoadXml(xml);
XmlNamespaceManager nsmgr = new XmlNamespaceManager(gpxDoc.NameTable);
nsmgr.AddNamespace("x", "http://www.topografix.com/GPX/1/1");
nsmgr.AddNamespace("ogr", "http://osgeo.org/gdal");
XmlNodeList nl = gpxDoc.SelectNodes("/x:gpx/x:wpt ", nsmgr);
OnStart?.Invoke(nl == null ? 0 : nl.Count);
int i = 0;
foreach (XmlElement xelement in nl)
{
OnProgress?.Invoke(i++);
var lat = xelement.Attributes.GetNamedItem("lat").Value;
var lon = xelement.Attributes.GetNamedItem("lon").Value;
var nameElement = xelement["name"];
var name = nameElement == null ? "Unnamed" : nameElement.InnerText;
var eleElement = xelement["ele"];
var ele = eleElement == null ? "0" : eleElement.InnerText;
var wikidataElement = xelement["wikidata"];
string wikidata = wikidataElement == null ? "" : wikidataElement.InnerText;
var wikipediaElement = xelement["wikipedia"];
string wikipedia = wikipediaElement == null ? "" : wikipediaElement.InnerText;
Poi poi = new Poi
{
Name = name,
Longitude = double.Parse(lon, CultureInfo.InvariantCulture),
Latitude = double.Parse(lat, CultureInfo.InvariantCulture),
Altitude = String.IsNullOrEmpty(ele) ? 0 : double.Parse(ele, CultureInfo.InvariantCulture),
Category = category,
Country = country,
Source = source
};
if (!String.IsNullOrEmpty(wikipedia))
{
poi.Wikipedia = wikipedia;
}
if (!String.IsNullOrEmpty(wikidata))
{
poi.Wikidata = wikidata;
}
listOfPoi.Add(poi);
lastNode = name;
}
return(listOfPoi);
}
catch (Exception ex)
{
throw new Exception($"Error when parsing GPX file (last node:{lastNode})", ex);
}
}
