internal static void Render()
{
if (CboLayers.GetSelectedLayer() == null ||
CboFields.GetSelectedField() == null ||
s_selectedRenderer == null ||
CboColors.GetSelectedColor() == null ||
CboClasses.GetSelectedClass() == null)
{
return;
}
switch (s_selectedRenderer)
{
case "Simple Marker Renderer":
MapUsingSimpleMarkerRenderer();
break;
case "Proportional Symbol Renderer":
MapUsingProportionalSymbolRenderer();
break;
case "Simple Fill Renderer":
MapUsingSimpleFillRenderer();
break;
case "Classbreaks Renderer":
MapUsingClassbreaksRenderer();
break;
}
}
internal static void UpdateCboClasses()
{
try
{
CboClasses.ClearAllItems();
string selectedColor = CboColors.GetSelectedColor();
/* FILEPATH needs to be modified whenever the cb.csv file is moved aka during installation */
System.IO.StreamReader file =
new System.IO.StreamReader(filepath);
string line;
string currentColor = "";
List <string> values = new List <string>();
while ((line = file.ReadLine()) != null)
{
string[] words = line.Split(',');
string value = "";
if (words[0] != "")
{
currentColor = words[0];
}
if (currentColor.Equals(selectedColor))
{
switch (CboRenderers.GetSelectedRenderer())
{
case "Simple Marker Renderer":
case "Simple Fill Renderer":
case "Proportional Symbol Renderer":
value = words[5];
break;
case "Classbreaks Renderer":
value = words[1];
break;
}
if (!values.Contains(value) && !value.Equals(""))
{
values.Add(value);
}
}
}
foreach (string value in values)
{
CboClasses.AddItem(value);
}
}
catch (Exception e)
{
System.Windows.Forms.MessageBox.Show(e.ToString());
LocateCBfile();
UpdateCboClasses();
}
}
internal static ICmykColor[] GetCmykColors()
{
try
{
string selectedClass = CboClasses.GetSelectedClass();
ICmykColor[] colors = new ICmykColor[Convert.ToInt32(selectedClass)];
int currentIndex = 0;
string selectedColor = CboColors.GetSelectedColor();
System.IO.StreamReader file =
new System.IO.StreamReader(filepath);
string line;
string currentColor = "";
string currentClass = "";
while ((line = file.ReadLine()) != null)
{
if (currentIndex == colors.Length)
{
break;
}
string[] words = line.Split(',');
if (words[0] != "")
{
currentColor = words[0];
}
if (words[1] != "")
{
currentClass = words[1];
}
if (currentColor.Equals(selectedColor) && currentClass.Equals(selectedClass))
{
ICmykColor color = new CmykColorClass();
color.Cyan = Convert.ToInt32(words[6]);
color.Magenta = Convert.ToInt32(words[7]);
color.Yellow = Convert.ToInt32(words[8]);
color.Black = Convert.ToInt32(words[9]);
colors[currentIndex] = color;
currentIndex++;
}
}
return(colors);
}
catch (Exception e)
{
System.Windows.Forms.MessageBox.Show(e.ToString());
LocateCBfile();
return(GetCmykColors());
}
}
internal static ICmykColor GetSingleCMYKColor()
{
try
{
ICmykColor color = new CmykColorClass();
string selectedColor = CboColors.GetSelectedColor();
string selectedClass = CboClasses.GetSelectedClass();
/* FILEPATH needs to be modified whenever the cb.csv file is moved aka during installation */
System.IO.StreamReader file =
new System.IO.StreamReader(filepath);
string line;
string currentColor = "";
string currentClass = "";
while ((line = file.ReadLine()) != null)
{
string[] words = line.Split(',');
if (words[0] != "")
{
currentColor = words[0];
}
currentClass = words[5];
if (currentColor.Equals(selectedColor) && currentClass.Equals(selectedClass))
{
color.Cyan = Convert.ToInt32(words[6]);
color.Magenta = Convert.ToInt32(words[7]);
color.Yellow = Convert.ToInt32(words[8]);
color.Black = Convert.ToInt32(words[9]);
return(color);
}
}
return(color);
}
catch (Exception e)
{
System.Windows.Forms.MessageBox.Show(e.ToString());
LocateCBfile();
return(GetSingleCMYKColor());
}
}
private static void MapUsingClassbreaksRenderer()
{
string layerName = CboLayers.GetSelectedLayer();
ILayer layer = GetLayerByName(layerName);
IFeatureLayer2 fLayer = layer as IFeatureLayer2;
string fieldName = CboFields.GetSelectedField();
// Get the number of classes
string selectedClass = CboClasses.GetSelectedClass();
int numberOfClasses = Convert.ToInt32(selectedClass);
ITableHistogram tableHistogram = new TableHistogramClass();
tableHistogram.Table = fLayer.FeatureClass as ITable;
tableHistogram.Field = fieldName;
IHistogram histo = tableHistogram as IHistogram;
object datavalues, datafrequencies;
histo.GetHistogram(out datavalues, out datafrequencies);
IClassify classify = new QuantileClass();
classify.SetHistogramData(datavalues, datafrequencies);
classify.Classify(ref numberOfClasses);
if (numberOfClasses <= 1)
{
return;
}
double[] classBreaks = (double[])classify.ClassBreaks;
IClassBreaksRenderer render = new ClassBreaksRenderer();
render.Field = fieldName;
render.BreakCount = numberOfClasses;
render.MinimumBreak = classBreaks[0];
// Get the colors
ICmykColor[] colors = ColorbrewerExtension.GetCmykColors();
IFillSymbol fill = null;
// Iterate through the colors
for (int i = 0; i < numberOfClasses; i++)
{
fill = new SimpleFillSymbol();
fill.Color = colors[i];
fill.Outline.Width = 0.5;
render.Symbol[i] = fill as ISymbol;
render.Break[i] = classBreaks[i + 1];
render.Label[i] = string.Format("{0} to {1}", classBreaks[i]
, classBreaks[i + 1]);
}
IGeoFeatureLayer gFLayer = layer as IGeoFeatureLayer;
gFLayer.Renderer = render as IFeatureRenderer;
IMxDocument mxDoc = ArcMap.Application.Document as IMxDocument;
mxDoc.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeography, gFLayer
, mxDoc.ActiveView.Extent);
mxDoc.UpdateContents();
}
public CboClasses()
{
s_CboClasses = this;
}
