メインフォームでメニューを作成する
Windowsフォームで分類記号メニューを作成する
分類記号化クラスの追加（ArcGISClass）
新しいClassBreaksRendererSymbolクラスを作成します
クラスのパブリックオーバーライドvoidOnClick（）関数でシンボリックウィンドウを開始するコードを追加します
完全なコードは次のとおりです。
using System;
using System.Drawing;
using System.Runtime.InteropServices;
using ESRI.ArcGIS.ADF.BaseClasses;
using ESRI.ArcGIS.ADF.CATIDs;
using ESRI.ArcGIS.Controls;
namespace Visualization
{
/// <summary>
/// Command that works in ArcMap/Map/PageLayout
/// </summary>
[Guid("b7da75ef-fede-4553-a87e-72703eb3da5c")]
[ClassInterface(ClassInterfaceType.None)]
[ProgId("Visualization.ClassBreaksRendererSymbolCmd")]
public sealed class ClassBreaksRendererSymbolCmd : BaseCommand
{
#region COM Registration Function(s)
[ComRegisterFunction()]
[ComVisible(false)]
static void RegisterFunction(Type registerType)
{
// Required for ArcGIS Component Category Registrar support
ArcGISCategoryRegistration(registerType);
//
// TODO: Add any COM registration code here
//
}
[ComUnregisterFunction()]
[ComVisible(false)]
static void UnregisterFunction(Type registerType)
{
// Required for ArcGIS Component Category Registrar support
ArcGISCategoryUnregistration(registerType);
//
// TODO: Add any COM unregistration code here
//
}
#region ArcGIS Component Category Registrar generated code
/// <summary>
/// Required method for ArcGIS Component Category registration -
/// Do not modify the contents of this method with the code editor.
/// </summary>
private static void ArcGISCategoryRegistration(Type registerType)
{
string regKey = string.Format("HKEY_CLASSES_ROOT\\CLSID\\{
{
{0}}}", registerType.GUID);
MxCommands.Register(regKey);
ControlsCommands.Register(regKey);
}
/// <summary>
/// Required method for ArcGIS Component Category unregistration -
/// Do not modify the contents of this method with the code editor.
/// </summary>
private static void ArcGISCategoryUnregistration(Type registerType)
{
string regKey = string.Format("HKEY_CLASSES_ROOT\\CLSID\\{
{
{0}}}", registerType.GUID);
MxCommands.Unregister(regKey);
ControlsCommands.Unregister(regKey);
}
#endregion
#endregion
private IHookHelper m_hookHelper = null;
public ClassBreaksRendererSymbolCmd()
{
base.m_category = "Visualization";
base.m_caption = "分类符号化";
base.m_message = "分类符号化";
base.m_toolTip = "分类符号化";
base.m_name = "ClassBreaksRendererSymbolCmd";
try
{
string bitmapResourceName = GetType().Name + ".bmp";
base.m_bitmap = new Bitmap(GetType(), bitmapResourceName);
}
catch (Exception ex)
{
System.Diagnostics.Trace.WriteLine(ex.Message, "Invalid Bitmap");
}
}
#region Overridden Class Methods
/// <summary>
/// Occurs when this command is created
/// </summary>
/// <param name="hook">Instance of the application</param>
public override void OnCreate(object hook)
{
if (hook == null)
return;
try
{
m_hookHelper = new HookHelperClass();
m_hookHelper.Hook = hook;
if (m_hookHelper.ActiveView == null)
m_hookHelper = null;
}
catch
{
m_hookHelper = null;
}
if (m_hookHelper == null)
base.m_enabled = false;
else
base.m_enabled = true;
// TODO: Add other initialization code
}
/// <summary>
/// Occurs when this command is clicked
/// </summary>
public override void OnClick()
{
if (m_hookHelper == null) return;
if (m_hookHelper.FocusMap.LayerCount > 0)
{
ClassBreaksRendererSymbol symbol = new ClassBreaksRendererSymbol(m_hookHelper);
symbol.Show(m_hookHelper as System.Windows.Forms.IWin32Window);
}
}
#endregion
}
}
public override void OnClick（）関数は、次のようにコードを追加します。
public override void OnClick（）
{ if（m_hookHelper == null）return; if（m_hookHelper.FocusMap.LayerCount> 0） { ClassBreaksRendererSymbolシンボル=新しいClassBreaksRendererSymbol（m_hookHelper）; symbol.Show（m_hookHelper as System.Windows.Forms.IWin32Window）; } }
分類記号化クラス（ArcGISClass）を開始します
単一の記号化メニューのクリックイベントに単一の記号化の開始クラス（ArcGISClass）を追加します
private void 分类符号化ToolStripMenuItem_Click(object sender, EventArgs e)
{
ICommand command = new Visualization.ClassBreaksRendererSymbolCmd();
command.OnCreate(axMapControl1.Object);
command.OnClick();
}メニューをクリックして、シンボル化されたクラスを分類することにより、シンボル化されたフォームを開始します
新しく作成された分類記号設定フォーム
シンボル化レイヤーを選択し、シンボル化属性フィールドを選択してリボンとシンボルをシンボル化し、シンボル化ボタンをクリックしてグレーディングとカラーリングを実行します。
コードは次のように表示されます。
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using ESRI.ArcGIS.Controls;
using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.Display;
using ESRI.ArcGIS.esriSystem;
using ESRI.ArcGIS.Geodatabase;
using ESRI.ArcGIS.Geometry;
namespace Visualization
{
public partial class ClassBreaksRendererSymbol : Form
{
IHookHelper m_hookHelper = null;
IActiveView m_activeView = null;
IMap m_map = null;
IFeatureLayer layer2Symbolize = null;
string strRendererField = string.Empty;
string strNormalizeField = string.Empty;
string strClassifyMethod = string.Empty;
double dblStdDevInterval = 0.0;
double dblDefinedInterval = 0.0;
int classCount = 5;
private IClassBreaksRenderer m_classBreaksRenderer;
IStyleGallery pStyleGlry = new ServerStyleGalleryClass();
IColorRamp colorRamp = null;
ISymbol gloabalSymbol = null;
public ClassBreaksRendererSymbol(IHookHelper hookHelper)
{
InitializeComponent();
m_hookHelper = hookHelper;
m_activeView = m_hookHelper.ActiveView;
m_map = m_hookHelper.FocusMap;
}
private void ClassBreaksRendererSymbol_Load(object sender, EventArgs e)
{
CbxLayersAddItems();
lblInterval.Visible = false;
txtInterval.Visible = false;
cbxInterval.Visible = false;
}
private void cbxLayers2Symbolize_SelectedIndexChanged(object sender, EventArgs e)
{
if (cbxLayers2Symbolize.SelectedItem != null)
{
string strLayer2Symbolize = cbxLayers2Symbolize.SelectedItem.ToString();
layer2Symbolize = GetFeatureLayer(strLayer2Symbolize);
CbxFieldAdditems(layer2Symbolize);
strRendererField = cbxFields.Items[0].ToString();
}
}
private void CbxFieldAdditems(IFeatureLayer featureLayer)
{
if (featureLayer == null) return;
IFields fields = featureLayer.FeatureClass.Fields;
cbxFields.Items.Clear();
cbxNormalization.Items.Clear();
cbxNormalization.Items.Add("None");
for (int i = 0; i < fields.FieldCount; i++)
{
if ((fields.get_Field(i).Type == esriFieldType.esriFieldTypeDouble) ||
(fields.get_Field(i).Type == esriFieldType.esriFieldTypeInteger) ||
(fields.get_Field(i).Type == esriFieldType.esriFieldTypeSingle) ||
(fields.get_Field(i).Type == esriFieldType.esriFieldTypeSmallInteger))
{
cbxFields.Items.Add(fields.get_Field(i).Name);
cbxNormalization.Items.Add(fields.get_Field(i).Name);
}
}
cbxFields.SelectedIndex = 0;
cbxNormalization.SelectedIndex = 0;
}
private void CbxLayersAddItems()
{
if (GetLayers() == null) return;
IEnumLayer layers = GetLayers();
layers.Reset();
ILayer layer = layers.Next();
while (layer != null)
{
if (layer is IFeatureLayer)
{
cbxLayers2Symbolize.Items.Add(layer.Name);
}
layer = layers.Next();
}
}
private void btnSymbolize_Click(object sender, EventArgs e)
{
if (layer2Symbolize == null) return;
Renderer();
}
private void Renderer()
{
IGeoFeatureLayer pGeoFeatureL = (IGeoFeatureLayer)layer2Symbolize;
IFeatureClass featureClass = pGeoFeatureL.FeatureClass;
//找出rendererField在字段中的编号
int lfieldNumber = featureClass.FindField(strRendererField);
if (lfieldNumber == -1)
{
MessageBox.Show("Can't find field called " + strRendererField);
return;
}
m_classBreaksRenderer = CreateClassBreaksRenderer(featureClass, strClassifyMethod);
if (m_classBreaksRenderer == null) return;
pGeoFeatureL.Renderer = (IFeatureRenderer)m_classBreaksRenderer;
m_activeView.PartialRefresh(esriViewDrawPhase.esriViewGeography, null, m_activeView.Extent);
}
private IClassBreaksRenderer CreateClassBreaksRenderer(IFeatureClass featureClass, string breakMethod)
{
ITable pTable = (ITable)featureClass;
//从pTable的strRendererField字段中得到信息给datavalues和datafrequency两个数组
ITableHistogram pTableHistogram = new BasicTableHistogramClass();
IBasicHistogram pHistogram = (IBasicHistogram)pTableHistogram;
pTableHistogram.Field = strRendererField;
if (strNormalizeField.ToLower() != "none")
pTableHistogram.NormField = strNormalizeField;
pTableHistogram.Table = pTable;
object dataFrequency;
object dataValues;
pHistogram.GetHistogram(out dataValues, out dataFrequency);
//下面是分级方法，用于根据获得的值计算得出符合要求的数据
//根据条件计算出Classes和ClassesCount，numDesiredClasses为预定的分级数目
IClassifyGEN pClassify = null;
int numDesiredClasses = classCount;
switch (breakMethod)
{
case "等间隔":
pClassify = new EqualIntervalClass();
break;
case "已定义的间隔":
pClassify = new DefinedIntervalClass();
IIntervalRange2 intervalRange = pClassify as IIntervalRange2;
intervalRange.IntervalRange = dblDefinedInterval;
break;
case "分位数":
pClassify = new QuantileClass();
break;
case "自然裂点":
pClassify = new NaturalBreaksClass();
break;
case "标准差":
pClassify = new StandardDeviationClass();
IStatisticsResults pStatRes = pHistogram as IStatisticsResults;
IDeviationInterval pStdDev = pClassify as IDeviationInterval;
pStdDev.Mean = pStatRes.Mean;
pStdDev.StandardDev = pStatRes.StandardDeviation;
pStdDev.DeviationInterval = dblStdDevInterval;
break;
default:
break;
}
if (pClassify == null) return null;
pClassify.Classify(dataValues, dataFrequency, ref numDesiredClasses);
//返回一个数组
double[] classBreaks = (double[])pClassify.ClassBreaks;
int ClassesCount = classBreaks.GetUpperBound(0);
nudClassCount.Value = ClassesCount;
IClassBreaksRenderer pClassBreaksRenderer = new ClassBreaksRendererClass();
pClassBreaksRenderer.Field = strRendererField;
if (strNormalizeField.ToLower() != "none")
pClassBreaksRenderer.NormField = strNormalizeField;
//设置着色对象的分级数目
pClassBreaksRenderer.BreakCount = ClassesCount;
pClassBreaksRenderer.SortClassesAscending = true;
if (colorRamp == null)
{
MessageBox.Show("请先选择色带！！", "信息提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return null;
}
//通过色带设置各级分类符号的颜色
colorRamp.Size = ClassesCount;
bool createRamp;
colorRamp.CreateRamp(out createRamp);
IEnumColors enumColors = colorRamp.Colors;
enumColors.Reset();
IColor pColor = null;
ISymbol symbol = null;
if (gloabalSymbol == null)
{
MessageBox.Show("请选择符号...", "信息提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return null;
}
//需要注意的是分级着色对象中的symbol和break的下标都是从0开始
for (int i = 0; i < ClassesCount; i++)
{
pColor = enumColors.Next();
switch (featureClass.ShapeType)
{
case esriGeometryType.esriGeometryPoint:
IMarkerSymbol markerSymbol = gloabalSymbol as IMarkerSymbol;
markerSymbol.Color = pColor;
symbol = markerSymbol as ISymbol;
break;
case esriGeometryType.esriGeometryPolyline:
ILineSymbol lineSymbol = gloabalSymbol as ILineSymbol;
lineSymbol.Color = pColor;
symbol = lineSymbol as ISymbol;
break;
case esriGeometryType.esriGeometryPolygon:
IFillSymbol fillSymbol = gloabalSymbol as IFillSymbol;
fillSymbol.Color = pColor;
symbol = fillSymbol as ISymbol;
break;
default:
break;
}
pClassBreaksRenderer.set_Symbol(i, symbol);
pClassBreaksRenderer.set_Break(i, classBreaks[i + 1]);
}
return pClassBreaksRenderer;
}
private void btnSelectColorRamp_Click(object sender, EventArgs e)
{
ColorRampForm colorRampForm = new ColorRampForm();
colorRampForm.ShowDialog();
colorRamp = colorRampForm.m_styleGalleryItem.Item as IColorRamp;
colorRampForm.Dispose();
}
private void btnSelectSymbol_Click(object sender, EventArgs e)
{
gloabalSymbol = GetSymbolByControl(layer2Symbolize.FeatureClass.ShapeType);
}
private ISymbol GetSymbolByControl(esriGeometryType geometryType)
{
GetSymbolByControl symbolForm = null;
ISymbol symbol = null;
switch (geometryType)
{
case ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPoint:
symbolForm = new GetSymbolByControl(esriSymbologyStyleClass.esriStyleClassMarkerSymbols);
break;
case ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPolyline:
symbolForm = new GetSymbolByControl(esriSymbologyStyleClass.esriStyleClassLineSymbols);
break;
case ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPolygon:
symbolForm = new GetSymbolByControl(esriSymbologyStyleClass.esriStyleClassFillSymbols);
break;
default:
break;
}
symbolForm.ShowDialog();
if (symbolForm.m_styleGalleryItem != null)
symbol = symbolForm.m_styleGalleryItem.Item as ISymbol;
symbolForm.Dispose();
return symbol;
}
private void btnClose_Click(object sender, EventArgs e)
{
this.Close();
}
#region "GetLayers"
private IEnumLayer GetLayers()
{
UID uid = new UIDClass();
uid.Value = "{40A9E885-5533-11d0-98BE-00805F7CED21}";// IFeatureLayer
//uid.Value = "{E156D7E5-22AF-11D3-9F99-00C04F6BC78E}"; // IGeoFeatureLayer
//uid.Value = "{6CA416B1-E160-11D2-9F4E-00C04F6BC78E}"; // IDataLayer
if (m_map.LayerCount != 0)
{
IEnumLayer layers = m_map.get_Layers(uid, true);
return layers;
}
return null;
}
#endregion
#region "GetFeatureLayer"
private IFeatureLayer GetFeatureLayer(string layerName)
{
//get the layers from the maps
if (GetLayers() == null) return null;
IEnumLayer layers = GetLayers();
layers.Reset();
ILayer layer = null;
while ((layer = layers.Next()) != null)
{
if (layer.Name == layerName)
return layer as IFeatureLayer;
}
return null;
}
#endregion
private void cbxFields_SelectedIndexChanged(object sender, EventArgs e)
{
if (cbxFields.SelectedItem != null)
{
strRendererField = cbxFields.SelectedItem.ToString();
//Find the selected field in the feature layer
IFeatureClass featureClass = layer2Symbolize.FeatureClass;
IField field = featureClass.Fields.get_Field(featureClass.FindField(strRendererField));
//Get a feature cursor
ICursor cursor = (ICursor)layer2Symbolize.Search(null, false);
//Create a DataStatistics object and initialize properties
IDataStatistics dataStatistics = new DataStatisticsClass();
dataStatistics.Field = field.Name;
dataStatistics.Cursor = cursor;
//Get the result statistics
IStatisticsResults statisticsResults = dataStatistics.Statistics;
//Set the values min min and max values
txtMinValue.Text = statisticsResults.Minimum.ToString();
txtMaxValue.Text = statisticsResults.Maximum.ToString();
}
}
private void cbxNormalization_SelectedIndexChanged(object sender, EventArgs e)
{
if (cbxNormalization.SelectedItem != null)
{
strNormalizeField = cbxNormalization.SelectedItem.ToString();
}
}
private void initialClassify()
{
if (layer2Symbolize == null) return;
IFeatureClass featureClass = layer2Symbolize.FeatureClass;
ITable pTable = (ITable)featureClass;
ITableHistogram pTableHistogram = new BasicTableHistogramClass();
IBasicHistogram pHistogram = (IBasicHistogram)pTableHistogram;
pTableHistogram.Field = strRendererField;
if (strNormalizeField.ToLower() != "none")
pTableHistogram.NormField = strNormalizeField;
pTableHistogram.Table = pTable;
object dataFrequency;
object dataValues;
pHistogram.GetHistogram(out dataValues, out dataFrequency);
IClassifyGEN pClassify = null;
int numDesiredClasses = classCount;
pClassify = new EqualIntervalClass();
pClassify.Classify(dataValues, dataFrequency, ref numDesiredClasses);
double[] clsbreaks = (double[])pClassify.ClassBreaks;
double dblInterval = clsbreaks[1] - clsbreaks[0];
txtInterval.Text = dblInterval.ToString();
}
private void cbxClassifyMethods_SelectedIndexChanged(object sender, EventArgs e)
{
if (cbxClassifyMethods.SelectedItem != null)
{
strClassifyMethod = cbxClassifyMethods.SelectedItem.ToString();
if (strClassifyMethod == "已定义的间隔")
{
lblInterval.Visible = true;
lblInterval.Text = "间隔大小：";
txtInterval.Visible = true;
txtInterval.Enabled = true;
initialClassify();
}
else if (strClassifyMethod == "标准差")
{
lblInterval.Visible = true;
lblInterval.Text = "间隔大小：";
cbxInterval.Visible = true;
cbxInterval.Enabled = true;
}
else
{
lblInterval.Visible = false;
lblInterval.Text = "";
txtInterval.Visible = false;
txtInterval.Enabled = false;
cbxInterval.Visible = false;
cbxInterval.Enabled = false;
}
}
}
private void cbxInterval_SelectedIndexChanged(object sender, EventArgs e)
{
if (cbxInterval.SelectedItem != null)
{
string strStdDevInterval = cbxInterval.SelectedItem.ToString();
switch (strStdDevInterval)
{
case "1个标准差":
dblStdDevInterval = 1.0;
break;
case "1/2个标准差":
dblStdDevInterval = 0.5;
break;
case "1/3个标准差":
dblStdDevInterval = 1.0 / 3.0;
break;
case "1/4个标准差":
dblStdDevInterval = 0.25;
break;
default:
break;
}
}
}
public bool IsInteger(string s)
{
try
{
Int32.Parse(s);
}
catch
{
return false;
}
return true;
}
private void txtInterval_TextChanged(object sender, EventArgs e)
{
string strDefinedInterval = txtInterval.Text;
if (IsDouble(strDefinedInterval))
dblDefinedInterval = Double.Parse(strDefinedInterval);
else
{
System.Windows.Forms.MessageBox.Show("Interval size must be a numeric!");
txtInterval.Focus();
}
}
public bool IsDouble(string s)
{
try
{
Double.Parse(s);
}
catch
{
return false;
}
return true;
}
private void nudClassCount_ValueChanged(object sender, EventArgs e)
{
classCount = Convert.ToInt32(nudClassCount.Value);
}
}
}
この記事のコードのほとんどはサンプルコードからのものです！交換と学習へようこそ。シンボルが設定された後、ソースコードのTOCがリアルタイムで更新されます。他のプロジェクトに移植した後、TOCコントロールの凡例は時間内に更新されません。新しいデータが更新されます。ルート原因はまだ見つかっていません。