public async void Export()
        {
            exporting = true;
            try
            {
                var dialog = new SaveFileDialog();
                if (dialog.ShowDialog() == true)
                {
                    StreamWriter sw = new StreamWriter(dialog.FileName, false);

                    var selectedAnalysis = SelectedAnalysis.ToList();

                    var cols = new string[] { "Code", "Latitude", "Longitude" }.Union(selectedAnalysis.Select(a => "\"" + a.Name + "\"")).ToArray();
                    await sw.WriteCSVLineAsync(cols);

                    var localities = selectedAnalysis.SelectMany(a => a.Frequencies).Select(f => f.Locality).Distinct().OrderBy(l => l.Code).ToList();
                    var step = 1.0f / localities.Count;
                    Progress = 0;

                    var enumerators = selectedAnalysis.Select(a => a.Frequencies.OrderBy(f => f.Locality.Code).GetEnumerator()).ToArray();
                    var hasElements = enumerators.Select(e => e.MoveNext()).ToArray();

                    foreach (var l in localities)
                    {
                        Progress += step;
                        StringBuilder sb = new StringBuilder();
                        sb.Append(string.Join(",", l.Code, l.Location == null ? string.Empty : l.Location.Latitude.ToString(), l.Location == null ? string.Empty : l.Location.Longitude.ToString()));
                        sb.Append(",");
                        for (var i = 0; i < enumerators.Length; i++)
                        {
                            if (hasElements[i] && enumerators[i].Current.Locality == l)
                            {
                                sb.Append(enumerators[i].Current.Value.ToString());
                                hasElements[i] = enumerators[i].MoveNext();
                            }
                            if (i < enumerators.Length - 1)
                                sb.Append(",");
                        }
                        await sw.WriteLineAsync(sb.ToString());
                        await Task.Delay(1);
                    }

                    sw.Flush();
                    sw.Close();

                    Progress = 1;
                }
            }
            finally
            {
                exporting = false;
            }
        }