public async Task <int> findNearestSite()
{
try
{
geoLoc = new Geolocator {
ReportInterval = 2000
};
var pos = await geoLoc.GetGeopositionAsync();
var p = pos.Coordinate.Point;
var gpsPos = new GpsPoint {
twd97Lat = p.Position.Latitude, twd97Lon = p.Position.Longitude
};
var dists = new List <double>();
foreach (var s in sitesGeoDict)
{
dists.Add(StaticTaqModel.posDist(gpsPos, s.Value));
}
var minId = dists.FindIndex(v => v == dists.Min());
nearestSite = sitesGeoDict.Keys.ToList()[minId];
}
catch
{
throw new Exception(resLoader.GetString("positioningNearestSiteFail"));
}
return(0);
}
// Reload air quality XML files.
override public async Task <int> loadAq2Dict()
{
XDocument xd = new XDocument();
try
{
var dataXml = await ApplicationData.Current.LocalFolder.GetFileAsync(Params.aqDbFile);
using (var s = await dataXml.OpenStreamForReadAsync())
{
// Reload to xd.
xd = XDocument.Load(s);
}
}
catch
{
xd = XDocument.Load("Assets/" + Params.aqDbFile);
}
var dataX = from data in xd.Descendants("Data")
select data;
var geoDataX = from data in siteGeoXd.Descendants("Data")
select data;
sitesStrDict.Clear();
sitesGeoDict.Clear();
foreach (var d in dataX.OrderBy(x => x.Element("County").Value))
{
var siteName = d.Descendants("SiteName").First().Value;
var geoD = from gd in geoDataX
where gd.Descendants("SiteName").First().Value == siteName
select gd;
var siteDict = d.Elements().ToDictionary(x => x.Name.LocalName, x => x.Value);
var geoDict = geoD.Elements().ToDictionary(x => x.Name.LocalName, x => x.Value);
siteDict.Add("TWD97Lat", geoDict["TWD97Lat"]);
siteDict.Add("TWD97Lon", geoDict["TWD97Lon"]);
sitesGeoDict.Add(siteName, new GpsPoint
{
twd97Lat = double.Parse(siteDict["TWD97Lat"]),
twd97Lon = double.Parse(siteDict["TWD97Lon"]),
});
// Shorten long status strings for map icons.
siteDict.Add("ShortStatus", StaticTaqModel.getShortStatus(siteDict["Status"]));
sitesStrDict.Add(siteName, siteDict);
}
return(0);
}
public int getAqLevel(string siteName, string aqName)
{
var val = getAqVal(siteName, aqName);
return(StaticTaqModel.getAqLevel(aqName, val));
}
// Reload air quality JSON files.
override public async Task <int> loadAq2Dict()
{
JObject jTaqDb;
try
{
var dataJson = await ApplicationData.Current.LocalFolder.GetFileAsync(Params.aqDbFile);
jTaqDb = await readJObject(dataJson);
}
catch
{
var dataJson = await StorageFile.GetFileFromApplicationUriAsync(new Uri("ms-appx:///Assets/" + Params.aqDbFile));
jTaqDb = await readJObject(dataJson);
}
var data = jTaqDb["result"]["records"];
var geoDataX = from gdata in siteGeoXd.Descendants("Data")
select gdata;
sitesStrDict.Clear();
sitesGeoDict.Clear();
foreach (var d in data)
{
var siteDict = d.ToObject <Dictionary <string, string> >();
var siteName = siteDict["SiteName"];
// Skip duplicate keys as possible.
if (sitesStrDict.ContainsKey(siteName))
{
continue;
}
var geoD = from gd in geoDataX
where gd.Descendants("SiteName").First().Value == siteName
select gd;
var geoDict = geoD.Elements().ToDictionary(x => x.Name.LocalName, x => x.Value);
string latStr, lonStr;
// No corresponding site geo info in SiteGeo.xml!!!
if (geoDict.Count == 0)
{
latStr = "0";
lonStr = "0";
}
else
{
latStr = geoDict["TWD97Lat"];
lonStr = geoDict["TWD97Lon"];
}
siteDict.Add("TWD97Lat", latStr);
siteDict.Add("TWD97Lon", lonStr);
sitesGeoDict.Add(siteName, new GpsPoint
{
twd97Lat = double.Parse(siteDict["TWD97Lat"]),
twd97Lon = double.Parse(siteDict["TWD97Lon"]),
});
// Shorten long status strings for map icons.
siteDict.Add("ShortStatus", StaticTaqModel.getShortStatus(siteDict["Status"]));
if (siteDict["ShortStatus"] == "維護")
{
foreach (var f in aqHistNames)
{
siteDict[f] = "N/A";
}
}
sitesStrDict.Add(siteName, siteDict);
}
return(0);
}
