protected override void OnClick()
{
IWorkspaceFactory workspaceFactory = new FileGDBWorkspaceFactoryClass();
IWorkspace workspace = workspaceFactory.OpenFromFile(@"C:\temp\data.gdb", 0);
IFeatureWorkspace featureWorkspace = (IFeatureWorkspace)workspace;
IFeatureClass featureClass = featureWorkspace.OpenFeatureClass("PolygonFC");
ISpatialReferenceFactory3 spatialFact = new SpatialReferenceEnvironmentClass();
IQueryFilter filter = new QueryFilterClass();
filter.WhereClause = "";
// The Geotransformation to use while performing the projection
IGeoTransformation pGeoTransB = spatialFact.CreateGeoTransformation(
(int)esriSRGeoTransformationType.esriSRGeoTransformation_NAD1983_To_WGS1984_1) as IGeoTransformation;
// The target spatial reference. WGS_1984: WKID = 4326 (EPSG)
ISpatialReference toSpatialReference = spatialFact.CreateSpatialReference(4326);
//create the search cursor to go through each and every feature in the featureclass
IFeatureCursor featureCursor = featureClass.Search(filter, true);
IFeature feature = featureCursor.NextFeature();
string areaText = null;
while (feature != null)
{
// Project the feature (geometry) from its current coordinate system into the one specified (UTMz11N_WGS84)
((IGeometry5)feature.Shape).ProjectEx(toSpatialReference, esriTransformDirection.esriTransformReverse, pGeoTransB, false, 0.0, 0.0);
IPolygon polygon = (IPolygon)feature.Shape;
// Compute the area
IArea area = polygon as IArea;
// Build a string to output to a message box
areaText += "OID = " + feature.OID + " , " + "Area =" + area.Area.ToString() + " \n";
feature = featureCursor.NextFeature();
}
MessageBox.Show(areaText);
ArcMap.Application.CurrentTool = null;
}
public static IGeoTransformation GetGeographicToWebMercatorTransformation()
{
ISpatialReferenceFactory spatialReferenceFactory = new SpatialReferenceEnvironmentClass();
// esriSRGeoTransformation_NAD1983_To_WGS1984_5 1515 United States.
return(spatialReferenceFactory.CreateGeoTransformation((int)esriSRGeoTransformationType.esriSRGeoTransformation_NAD1983_To_WGS1984_5) as IGeoTransformation);
}
public void ChangeCoordinateSystem1()
{
ISpatialReferenceFactory2 spatialReferenceFactory = new SpatialReferenceEnvironmentClass();
IGeoTransformationOperationSet geoTransformationOperationSet = spatialReferenceFactory.GeoTransformationDefaults;
//NAD 1927 to WGS 1984 30.
IGeoTransformation geoTransformation = spatialReferenceFactory.CreateGeoTransformation((int)
esriSRGeoTransformationType.esriSRGeoTransformation_NAD1927_To_WGS1984_12) as IGeoTransformation;
geoTransformationOperationSet.Set(esriTransformDirection.esriTransformForward, geoTransformation);
geoTransformationOperationSet.Set(esriTransformDirection.esriTransformReverse, geoTransformation);
//Amersfoort to WGS 1984.
geoTransformation = spatialReferenceFactory.CreateGeoTransformation(8012) as IGeoTransformation;
geoTransformationOperationSet.Set(esriTransformDirection.esriTransformForward, geoTransformation);
geoTransformationOperationSet.Set(esriTransformDirection.esriTransformReverse, geoTransformation);
ESRI.ArcGIS.Geoprocessor.Geoprocessor GP = new ESRI.ArcGIS.Geoprocessor.Geoprocessor();
//ESRI.ArcGIS.DataManagementTools.Project pro = new ESRI.ArcGIS.DataManagementTools.Project();
//GP.OverwriteOutput = true;
//pro.in_dataset = layer.FeatureClass;
//pro.in_coor_system = pSpatialReference;
//pro.out_coor_system = prjPath;
//pro.out_dataset = outputPath;
//GP.Execute(pro, null);
}
public IPoint ProjectWgsToUrkaine2000WithGeoTransformation(
IPoint inputPoint,
CoordinateSystemModel coordinateSystemModel,
esriTransformDirection transformationDirection)
{
if (inputPoint == null)
{
return(null);
}
var bufferPoint = new PointClass {
X = inputPoint.X, Y = inputPoint.Y, SpatialReference = inputPoint.SpatialReference
};
//Create Spatial Reference Factory
var spatialReferenceFactory = new SpatialReferenceEnvironmentClass();
var targetSpatialReference = spatialReferenceFactory.CreateGeographicCoordinateSystem(coordinateSystemModel.ESRIWellKnownID);
var compositeGeoTransformation = new CompositeGeoTransformationClass();
var predefinedGeoTransformation =
spatialReferenceFactory.CreateGeoTransformation(Constants.ItrfToWgsGeoTransformationID) as IGeoTransformation;
compositeGeoTransformation.Add(esriTransformDirection.esriTransformReverse, predefinedGeoTransformation);
var coordinateFrameGeoTransformation = new CoordinateFrameTransformationClass();
var itrfSpatialReference =
spatialReferenceFactory.CreateSpatialReference((int)esriSRGeoCS3Type.esriSRGeoCS_IERSTerrestrialReferenceFrame2000);
coordinateFrameGeoTransformation.PutSpatialReferences(itrfSpatialReference, targetSpatialReference);
coordinateFrameGeoTransformation.PutParameters(
Constants.UkraineToItrf.XAxisTranslation,
Constants.UkraineToItrf.YAxisTranslation,
Constants.UkraineToItrf.ZAxisTranslation,
Constants.UkraineToItrf.XAxisRotation,
Constants.UkraineToItrf.YAxisRotation,
Constants.UkraineToItrf.ZAxisRotation,
Constants.UkraineToItrf.ScaleDifference);
compositeGeoTransformation.Add(esriTransformDirection.esriTransformForward, coordinateFrameGeoTransformation);
var geometry = bufferPoint as IGeometry5;
geometry.ProjectEx(targetSpatialReference, transformationDirection, compositeGeoTransformation, false, 0.0, 0.0);
return(geometry as IPoint);
}
/// <summary>
/// Transforms an Point to a different coordinate system.
/// </summary>
/// <param name="inPoint">The Point to be Converted</param>
/// <param name="inDataCoordinateSystem">The Coordinate System the point is currently in</param>
/// <param name="inReturnCoordinateSystem">The coordinate System the point is to be returned into</param>
/// <returns>A transformed point or null.</returns>
public T ConvertToCoordinateSystem <T>(T inputGeometry, int inDataCoordinateSystem, ISpatialReference destSpatialReference) where T : IGeometry2
{
// Create source spatial reference
ISpatialReferenceFactory2 spatialReferenceFactory = new SpatialReferenceEnvironmentClass();
ISpatialReference sourceSpatialReference = spatialReferenceFactory.CreateSpatialReference(inDataCoordinateSystem);
if (destSpatialReference == null)
{
return(inputGeometry);
}
//cast T as IGeometry2 and project this.
IGeometry2 geometry = inputGeometry as IGeometry2;
if ((inDataCoordinateSystem == 27700) && (destSpatialReference.FactoryCode == 4326))
{
IGeoTransformation geoTransformation = spatialReferenceFactory.CreateGeoTransformation(1196) as IGeoTransformation;
geometry.ProjectEx(destSpatialReference as ISpatialReference, esriTransformDirection.esriTransformForward, geoTransformation, false, 0, 0);
}
else if ((inDataCoordinateSystem == 4326) && (destSpatialReference.FactoryCode == 27700))
{
IGeoTransformation geoTransformation = spatialReferenceFactory.CreateGeoTransformation(1196) as IGeoTransformation;
geometry.ProjectEx(destSpatialReference as ISpatialReference, esriTransformDirection.esriTransformReverse, geoTransformation, false, 0, 0);
}
else if ((inDataCoordinateSystem == 27700) && (destSpatialReference.FactoryCode == 102113))
{
IGeoTransformation geoTransformation = spatialReferenceFactory.CreateGeoTransformation(1196) as IGeoTransformation;
IGeoTransformation pGeoTrans_B = spatialReferenceFactory.CreateGeoTransformation(108100) as IGeoTransformation; // ' WGS84 Maj Aux Sphere to WGS84
ICompositeGeoTransformation pGeoTransComposite = new CompositeGeoTransformationClass() as ICompositeGeoTransformation;
pGeoTransComposite.Add(esriTransformDirection.esriTransformForward, geoTransformation); // National Grid to Wgs84
pGeoTransComposite.Add(esriTransformDirection.esriTransformReverse, pGeoTrans_B); // reversed sphere to wgs84
geometry.ProjectEx(destSpatialReference, esriTransformDirection.esriTransformForward, pGeoTransComposite, false, 0, 0);
}
else if ((inDataCoordinateSystem == 102113) && (destSpatialReference.FactoryCode == 27700))
{
IGeoTransformation geoTransformation = spatialReferenceFactory.CreateGeoTransformation(1196) as IGeoTransformation;
IGeoTransformation pGeoTrans_B = spatialReferenceFactory.CreateGeoTransformation(108100) as IGeoTransformation; // ' WGS84 Maj Aux Sphere to WGS84
ICompositeGeoTransformation pGeoTransComposite = new CompositeGeoTransformationClass() as ICompositeGeoTransformation;
pGeoTransComposite.Add(esriTransformDirection.esriTransformForward, pGeoTrans_B); // sphere to wgs84
pGeoTransComposite.Add(esriTransformDirection.esriTransformReverse, geoTransformation); // National Grid to Wgs84
geometry.ProjectEx(destSpatialReference, esriTransformDirection.esriTransformForward, pGeoTransComposite, false, 0, 0);
}
else if ((inDataCoordinateSystem == 27700) && (destSpatialReference.FactoryCode == 102100))
{
IGeoTransformation geoTransformation = spatialReferenceFactory.CreateGeoTransformation(1196) as IGeoTransformation;
IGeoTransformation pGeoTrans_B = spatialReferenceFactory.CreateGeoTransformation(108100) as IGeoTransformation; // ' WGS84 Maj Aux Sphere to WGS84
ICompositeGeoTransformation pGeoTransComposite = new CompositeGeoTransformationClass();
pGeoTransComposite.Add(esriTransformDirection.esriTransformForward, geoTransformation); // National Grid to Wgs84
pGeoTransComposite.Add(esriTransformDirection.esriTransformReverse, pGeoTrans_B); // reversed sphere to wgs84
geometry.ProjectEx(destSpatialReference, esriTransformDirection.esriTransformForward, pGeoTransComposite, false, 0, 0);
}
else if ((inDataCoordinateSystem == 102100) && (destSpatialReference.FactoryCode == 27700))
{
IGeoTransformation geoTransformation = spatialReferenceFactory.CreateGeoTransformation(1196) as IGeoTransformation;
IGeoTransformation pGeoTrans_B = spatialReferenceFactory.CreateGeoTransformation(108100) as IGeoTransformation; // ' WGS84 Maj Aux Sphere to WGS84
ICompositeGeoTransformation pGeoTransComposite = new CompositeGeoTransformationClass();
pGeoTransComposite.Add(esriTransformDirection.esriTransformForward, pGeoTrans_B); // sphere to wgs84
pGeoTransComposite.Add(esriTransformDirection.esriTransformReverse, geoTransformation); // National Grid to Wgs84
geometry.ProjectEx(destSpatialReference, esriTransformDirection.esriTransformForward, pGeoTransComposite, false, 0, 0);
}
else if ((inDataCoordinateSystem == 27700) && (destSpatialReference.FactoryCode == 3857))
{
IGeoTransformation geoTransformation = spatialReferenceFactory.CreateGeoTransformation(1196) as IGeoTransformation;
IGeoTransformation pGeoTrans_B = spatialReferenceFactory.CreateGeoTransformation(108100) as IGeoTransformation; // ' WGS84 Maj Aux Sphere to WGS84
ICompositeGeoTransformation pGeoTransComposite = new CompositeGeoTransformationClass();
pGeoTransComposite.Add(esriTransformDirection.esriTransformForward, geoTransformation); // National Grid to Wgs84
pGeoTransComposite.Add(esriTransformDirection.esriTransformReverse, pGeoTrans_B); // reversed sphere to wgs84
geometry.ProjectEx(destSpatialReference, esriTransformDirection.esriTransformForward, pGeoTransComposite, false, 0, 0);
}
else if ((inDataCoordinateSystem == 3857) && (destSpatialReference.FactoryCode == 27700))
{
IGeoTransformation geoTransformation = spatialReferenceFactory.CreateGeoTransformation(1196) as IGeoTransformation;
IGeoTransformation pGeoTrans_B = spatialReferenceFactory.CreateGeoTransformation(108100) as IGeoTransformation; // ' WGS84 Maj Aux Sphere to WGS84
ICompositeGeoTransformation pGeoTransComposite = new CompositeGeoTransformationClass();
pGeoTransComposite.Add(esriTransformDirection.esriTransformForward, pGeoTrans_B); // sphere to wgs84
pGeoTransComposite.Add(esriTransformDirection.esriTransformReverse, geoTransformation); // National Grid to Wgs84
geometry.ProjectEx(destSpatialReference, esriTransformDirection.esriTransformForward, pGeoTransComposite, false, 0, 0);
}
else
{
geometry.Project(destSpatialReference as ISpatialReference);
}
return(inputGeometry);
}
public static IGeoTransformation GetGeographicToWebMercatorTransformation()
{
ISpatialReferenceFactory spatialReferenceFactory = new SpatialReferenceEnvironmentClass();
// esriSRGeoTransformation_NAD1983_To_WGS1984_5 1515 United States.
return spatialReferenceFactory.CreateGeoTransformation((int)esriSRGeoTransformationType.esriSRGeoTransformation_NAD1983_To_WGS1984_5) as IGeoTransformation;
}
/// <summary>
/// Sets the output projection for the transform to the one chosen here.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void comboBoxCoordSys_SelectedIndexChanged(object sender, EventArgs e)
{
try
{
ISpatialReference sr = null;
ISpatialReferenceFactory3 srFactory = new SpatialReferenceEnvironmentClass();
if (comboBoxCoordSys.SelectedIndex == 4)
{
if (_map != null && _map.SpatialReference != null)
{
sr = _map.SpatialReference;
labelSR.Text = sr.Name;
}
else
{
labelSR.Text = "";
}
buttonSR.Enabled = true;
_transform.SetGeoTransform(null);
}
else
{
if (comboBoxCoordSys.SelectedIndex == 0)
{
sr = srFactory.CreateGeographicCoordinateSystem((int)esriSRGeoCSType.esriSRGeoCS_WGS1984);
_transform.SetGeoTransform(null);
}
else
{
if (comboBoxCoordSys.SelectedIndex == 1)
{
sr = srFactory.CreateProjectedCoordinateSystem((int)esriSRProjCSType.esriSRProjCS_NAD1983UTM_10N);
}
else if (comboBoxCoordSys.SelectedIndex == 2)
{
sr = srFactory.CreateProjectedCoordinateSystem((int)esriSRProjCSType.esriSRProjCS_NAD1983UTM_11N);
}
else if (comboBoxCoordSys.SelectedIndex == 3)
{
sr = srFactory.CreateProjectedCoordinateSystem((int)esriSRProjCSType.esriSRProjCS_NAD1983UTM_12N);
}
IGeoTransformation trans = null;
trans = (IGeoTransformation)srFactory.CreateGeoTransformation(
(int)esriSRGeoTransformationType.esriSRGeoTransformation_NAD1983_To_WGS1984_1);
_transform.SetGeoTransform(trans);
}
labelSR.Text = "";
buttonSR.Enabled = false;
}
_transform.SetSpatialReference(sr);
if ((_map.SpatialReference == null) || !((IClone)_map.SpatialReference).IsEqual((IClone)sr))
{
_map.SpatialReference = sr;
ArcMap.Document.ActiveView.Refresh();
}
FillDatumTransform();
EnableSelectInputs();
}
catch (Exception ex)
{
ShowError(ex.Message);
}
}