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Create Grid From Feature Class Snippet (ArcObjects .NET 10.4 SDK)

ArcObjects Library Reference

Create Grid From Feature Class Snippet

[C#]

/// <summary>
/// Create a raster GeoDataset grid from a FeatureClass.
/// </summary>
/// <param name="feaureClass">An IFeatureClass interface that will have a raster (grid) created from it.</param>
/// <param name="string_RasterWorkspace">A System.String that is the workspace location for the grid coverage. Example: "C:\workspace"</param>
/// <param name="int32_NumberOfCells">A System.Int32 that is the number of cells in the X direction that you want the raster to have. This defines the resolution of the raster. Example: 10000</param>
/// <returns>A GeoDataset that is a raster of the input FeatureClass</returns>
/// <remarks></remarks>
public ESRI.ArcGIS.Geodatabase.IGeoDataset CreateGridFromFeatureClass(ESRI.ArcGIS.Geodatabase.IFeatureClass feaureClass, System.String string_RasterWorkspace, System.Int32 int32_NumberOfCells)
{

    ESRI.ArcGIS.Geodatabase.IGeoDataset geoDataset=(ESRI.ArcGIS.Geodatabase.IGeoDataset)feaureClass; // Explicit Cast

    ESRI.ArcGIS.Geometry.ISpatialReference spatialReference=geoDataset.SpatialReference;

    // Create a RasterMaker operator
    ESRI.ArcGIS.GeoAnalyst.IConversionOp conversionOp=new ESRI.ArcGIS.GeoAnalyst.RasterConversionOpClass();

    ESRI.ArcGIS.Geodatabase.IWorkspaceFactory workspaceFactory=new ESRI.ArcGIS.DataSourcesRaster.RasterWorkspaceFactoryClass();

    // set output workspace
    ESRI.ArcGIS.Geodatabase.IWorkspace workspace=workspaceFactory.OpenFromFile(string_RasterWorkspace, 0);

    // Create analysis environment
    ESRI.ArcGIS.GeoAnalyst.IRasterAnalysisEnvironment rasterAnalysisEnvironment=(ESRI.ArcGIS.GeoAnalyst.IRasterAnalysisEnvironment)conversionOp; // Explicit Cast
    rasterAnalysisEnvironment.OutWorkspace=workspace;

    ESRI.ArcGIS.Geometry.IEnvelope envelope=new ESRI.ArcGIS.Geometry.EnvelopeClass();
    envelope=geoDataset.Extent;

    // Set cell size
    System.Double double_xMin=envelope.XMin;
    System.Double double_xMax=envelope.XMax;
    System.Double double_difference=double_xMax - double_xMin;
    System.Double double_cellSize=double_difference / int32_NumberOfCells;
    object object_cellSize=(System.Object)double_cellSize;
    rasterAnalysisEnvironment.SetCellSize(ESRI.ArcGIS.GeoAnalyst.esriRasterEnvSettingEnum.esriRasterEnvValue, ref object_cellSize);

    // Set output extent
    object object_Envelope=(System.Object)envelope; // Explict Cast
    object object_Missing=System.Type.Missing;
    rasterAnalysisEnvironment.SetExtent(ESRI.ArcGIS.GeoAnalyst.esriRasterEnvSettingEnum.esriRasterEnvValue, ref object_Envelope, ref object_Missing);

    // Set output spatial reference
    rasterAnalysisEnvironment.OutSpatialReference=spatialReference;

    // Perform spatial operation
    ESRI.ArcGIS.Geodatabase.IRasterDataset rasterDataset=new ESRI.ArcGIS.DataSourcesRaster.RasterDatasetClass();

    // Create the new raster name that meets the coverage naming convention
    System.String string_RasterName=feaureClass.AliasName;
    if (string_RasterName.Length > 13)
    {
        string_RasterName=string_RasterName.Substring(0, 13);
    }
    string_RasterName=string_RasterName.Replace(" ", "_");

    rasterDataset=conversionOp.ToRasterDataset(geoDataset, "GRID", workspace, string_RasterName);

    ESRI.ArcGIS.Geodatabase.IGeoDataset geoDataset_output=(ESRI.ArcGIS.Geodatabase.IGeoDataset)rasterDataset;

    return geoDataset_output;

}

[Visual Basic .NET]

''' <summary>
''' Create a raster GeoDataset grid from a FeatureClass.
''' </summary>
''' <param name="feaureClass">An IFeatureClass interface that will have a raster (grid) created from it.</param>
''' <param name="string_RasterWorkspace">A System.String that is the workspace location for the grid coverage. Example: "C:\workspace"</param>
''' <param name="int32_NumberOfCells">A System.Int32 that is the number of cells in the X direction that you want the raster to have. This defines the resolution of the raster. Example: 10000</param>
''' <returns>A GeoDataset that is a raster of the input FeatureClass</returns>
''' <remarks></remarks>
Public Function CreateGridFromFeatureClass(ByVal feaureClass As ESRI.ArcGIS.Geodatabase.IFeatureClass, ByVal string_RasterWorkspace As System.String, ByVal int32_NumberOfCells As System.Int32) As ESRI.ArcGIS.Geodatabase.IGeoDataset

  Dim geoDataset As ESRI.ArcGIS.Geodatabase.IGeoDataset=CType(feaureClass, ESRI.ArcGIS.Geodatabase.IGeoDataset) ' Explicit Cast
  Dim spatialReference As ESRI.ArcGIS.Geometry.ISpatialReference=geoDataset.SpatialReference

  ' Create a RasterMaker operator
  Dim conversionOp As ESRI.ArcGIS.GeoAnalyst.IConversionOp=New ESRI.ArcGIS.GeoAnalyst.RasterConversionOpClass

  Dim workspaceFactory As ESRI.ArcGIS.Geodatabase.IWorkspaceFactory=New ESRI.ArcGIS.DataSourcesRaster.RasterWorkspaceFactoryClass

  ' set output workspace
  Dim workspace As ESRI.ArcGIS.Geodatabase.IWorkspace=workspaceFactory.OpenFromFile(string_RasterWorkspace, 0)

  ' Create analysis environment
  Dim rasterAnalysisEnvironment As ESRI.ArcGIS.GeoAnalyst.IRasterAnalysisEnvironment=CType(conversionOp, ESRI.ArcGIS.GeoAnalyst.IRasterAnalysisEnvironment) ' Explicit Cast
  rasterAnalysisEnvironment.OutWorkspace=workspace

  Dim envelope As ESRI.ArcGIS.Geometry.IEnvelope=New ESRI.ArcGIS.Geometry.EnvelopeClass
  envelope=geoDataset.Extent

  ' Set cell size
  Dim double_xMin As System.Double=envelope.XMin
  Dim double_xMax As System.Double=envelope.XMax
  Dim double_difference As System.Double=double_xMax - double_xMin
  Dim double_cellSize As System.Double=double_difference / int32_NumberOfCells
  Dim object_cellSize As System.Object=CType(double_cellSize, System.Object)
  rasterAnalysisEnvironment.SetCellSize(ESRI.ArcGIS.GeoAnalyst.esriRasterEnvSettingEnum.esriRasterEnvValue, object_cellSize)

  ' Set output extent
  Dim object_Envelope As System.Object=CType(envelope, System.Object) ' Explict Cast
  Dim object_Missing As System.Object=System.Type.Missing
  rasterAnalysisEnvironment.SetExtent(ESRI.ArcGIS.GeoAnalyst.esriRasterEnvSettingEnum.esriRasterEnvValue, object_Envelope, object_Missing)

  ' Set output spatial reference
  rasterAnalysisEnvironment.OutSpatialReference=spatialReference

  ' Perform spatial operation
  Dim rasterDataset As ESRI.ArcGIS.Geodatabase.IRasterDataset=New ESRI.ArcGIS.DataSourcesRaster.RasterDatasetClass

  ' Create the new raster name that meets the coverage naming convention
  Dim string_RasterName As System.String=feaureClass.AliasName
  If string_RasterName.Length > 13 Then
    string_RasterName=string_RasterName.Substring(0, 13)
  End If
  string_RasterName=string_RasterName.Replace(" ", "_")

  rasterDataset=conversionOp.ToRasterDataset(geoDataset, "GRID", workspace, string_RasterName)

  Dim geoDataset_output As ESRI.ArcGIS.Geodatabase.IGeoDataset=CType(rasterDataset, ESRI.ArcGIS.Geodatabase.IGeoDataset)

  Return geoDataset_output

End Function