public static IEnumerable <GeometryData> Load(PointFile source)
{
var fact = new GeometryFactory();
using StreamReader reader = File.OpenText(source.Filename);
var options = new CsvOptions {
HeaderMode = source.HeaderMode,
RowsToSkip = source.RowsToSkip,
Separator = source.Separator[0]
};
CoordinateSystem f = ProjectionUtils.Transforms[source.Srid];
CoordinateSystem t = ProjectionUtils.EPSG_4326();
foreach (var row in CsvReader.Read(reader, options).Take(source.MaxRecords ?? int.MaxValue))
{
double.TryParse(row[source.Latitude], out double latitude);
double.TryParse(row[source.Longitude], out double longitude);
var geom = new Coordinate(longitude, latitude);
geom = geom.Transform(f, t);
var data = new GeometryData
{
DataType = source.DataType,
Geom = fact.CreatePoint(geom),
Name = row[source.Name],
Reference = source.Reference != null ? row[(int)source.Reference] : null,
};
yield return(data);
}
}
IEnumerable <GeometryData> ProcessSourceFile(PointFile sourcefile)
{
var items = PointCsvFileLoader.Load(sourcefile).ToList();
_logger.LogInformation($"Loaded {items.Count} from {sourcefile.Title}");
return(items);
}
private void pointFilesListView_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
PointFile selectedFile = (PointFile)pointFilesListView.SelectedItem;
if (selectedFile != null)
{
GraphWindow contactDetailsWindow = new GraphWindow(PointsToFile.parse(selectedFile.Points));
contactDetailsWindow.ShowDialog();
}
}