private void ButtMultiAnalyzeDiffClick(object sender, RoutedEventArgs e)
{
try
{
var layerNames = new List<string>();
var allFieldNames = new List<string>();
foreach (string s in this.lbChangeLayers.SelectedItems)
{
if (!layerNames.Contains(s))
{
layerNames.Add(s);
}
}
if (this.lbChangeLayers.SelectedItems.Count < 2)
{
MessageBox.Show("Please select at least two layers");
return;
}
var colsMappingForMsgBox = new Dictionary<string, string>();
var uniqueFieldNames = new Dictionary<string, string>();
var multiResult = new PivotTable();
var analyzer = new PivotTableAnalyzer(this.UpdatePBar, this.SetPBarProperties);
for (var i = 0; i < layerNames.Count; i++)
{
for (var x = i + 1; x < layerNames.Count; x++)
{
var layerA = layerNames[i];
var layerB = layerNames[x];
colsMappingForMsgBox.Add("L" + i + "_" + x + "L", layerA + " --> " + layerB);
if (layerA == null || layerB == null)
{
MessageBox.Show("no layers available");
}
var layers = this.GetFeatureLayersFromToc(this.GetActiveViewFromArcMap(ArcMap.Application));
// getSelectedFeatureFromLayerByName(layers, "somename");
var flayerA = this.GetLayerByName(layers, layerA);
var flayerB = this.GetLayerByName(layers, layerB);
this.pbarChangeDet.Value = 0;
this.UpdateStatusLabel("Preparing " + layerA);
Application.DoEvents();
var ignoreCols = new List<string> { "OBJECTID", "SHAPE", "SHAPE_Length", "SHAPE_Area" };
var ptA = this.FeatureLayerToPivotTable(flayerA, "GeoHash", ignoreCols);
this.UpdateStatusLabel("Preparing " + layerB);
Application.DoEvents();
var ptB = this.FeatureLayerToPivotTable(flayerB, "GeoHash", ignoreCols);
this.UpdateStatusLabel("Calculating change");
Application.DoEvents();
var res = analyzer.DetectChange(ptA, ptB, "L" + i + "_" + x + "L", false);
foreach (var entry in res)
{
if (!entry.Data.ContainsKey("layerAIndex"))
{
entry.Data.Add("layerAIndex", i);
}
if (!entry.Data.ContainsKey("layerBIndex"))
{
entry.Data.Add("layerBIndex", i);
}
entry.Label = "L" + i + "_" + x + "L";
foreach (var name in entry.Data.Keys)
{
if (!allFieldNames.Contains(name))
{
allFieldNames.Add(name);
}
if (!uniqueFieldNames.ContainsKey(name))
{
uniqueFieldNames.Add(name, name);
}
}
break;
}
multiResult.AddRange(res);
}
}
var flat = analyzer.flattenAndSimplify(multiResult, "percent_change");
uniqueFieldNames = new Dictionary<string, string>();
foreach (var pte in flat)
{
var vals = new List<double>();
foreach (var field in pte.Data.Keys)
{
vals.Add(pte.Data[field]);
}
pte.Data.Add("stdev_", analyzer.stdev(vals));
pte.Data.Add("avg_", analyzer.avg(vals));
pte.Data.Add("min_", analyzer.min(vals));
pte.Data.Add("max_", analyzer.max(vals));
foreach (var field in pte.Data.Keys)
{
if (!uniqueFieldNames.ContainsKey(field))
{
uniqueFieldNames.Add(field, field);
}
}
}
var ws = Jarvis.OpenWorkspace(Settings.Default.geoDatabase);
var fcName = "multi_change_" + DateTime.Now.Millisecond;
// uniqueFieldNames.Add("context_str", "context_str");
var featureClass = Jarvis.CreateStandaloneFeatureClass(ws, fcName, uniqueFieldNames, false, 0);
var insertCur = featureClass.Insert(true);
this.UpdateStatusLabel("Loading Output Feature Class");
Application.DoEvents();
this.InsertPivoTableRowsToFeatureClass(featureClass, flat, uniqueFieldNames);
this.AddLayerToArcMap(fcName);
this.pbarChangeDet.Value = 0;
this.lblPbarStatus.Content = "Done";
var message = "FYI:\n";
foreach (var colName in colsMappingForMsgBox.Keys)
{
message += "Column " + colName + " represents change for " + colsMappingForMsgBox[colName] + "\n";
}
message += "\n*This is required because of field length limitations";
MessageBox.Show(message);
Application.DoEvents();
// now I need to create a feature class and feature layer from this object
}
catch (Exception ex)
{
MessageBox.Show("An error occured calculating change" + ex.Message);
}
}
