public static IRasterBand GetRasterBand(IWorkspace pSDEWorkspace, string strRasterDataset, string strBandName)
{
IEnumDataset pEnumdataset = pSDEWorkspace.get_Datasets(esriDatasetType.esriDTRasterDataset);
IRasterBandCollection pRasterBandCollection = null;
IEnumRasterBand pEnumRasterBand = null;
IRasterBand pRasterBand = null;
IDataset pDataset = pEnumdataset.Next();
while (pDataset != null)
{
if (pDataset.Name == strRasterDataset)
{
pRasterBandCollection = (IRasterBandCollection)pDataset;
pEnumRasterBand = pRasterBandCollection.Bands;
pRasterBand = pEnumRasterBand.Next();
while (pRasterBand != null)
{
if (pRasterBand.Bandname == strBandName)
{
return(pRasterBand);
}
pRasterBand = pEnumRasterBand.Next();
}
}
pDataset = pEnumdataset.Next();
}
pRasterBandCollection = null;
pEnumRasterBand = null;
pRasterBand = null;
pEnumdataset = null;
pDataset = null;
return(null);
}
private void 噪声分级_Load(object sender, EventArgs e)
{
//向图层comboBox1中预置噪音图层
for (int i = 0; i < global.p2DMap.LayerCount; i++)
{
ILayer pLayer = global.p2DMap.get_Layer(i);
if (pLayer != null)
{
if (pLayer is IRasterLayer)
{
comboBox1.Items.Add(pLayer.Name);
}
}
}
comboBox1.SelectedIndex = 0;
//向分级数comBobox2中预置分级数，默认为5
for (int i = 1; i < 7; i++)
{
comboBox2.Items.Add(i);
}
//栅格像元统计
IRasterBandCollection bandCollection;
ILayer mlayer = GetLayerByName(comboBox1.SelectedItem.ToString());
IRasterLayer rasterLayer = mlayer as IRasterLayer;
IRaster2 raster = rasterLayer.Raster as IRaster2;
IRasterDataset rd = raster.RasterDataset;
bandCollection = rd as IRasterBandCollection;
IEnumRasterBand enumband = bandCollection.Bands;
IRasterBand rasterBand = enumband.Next();
rasterStatic = null;
if (rasterBand != null && rasterBand.Statistics != null)
{
rasterStatic = rasterBand.Statistics;
}
datatable1 = new DataTable();
DataColumn datacolumn1 = new DataColumn("区间", System.Type.GetType("System.String"));
DataColumn datacolumn2 = new DataColumn("值", System.Type.GetType("System.Int32"));
datatable1.Columns.Add(datacolumn1);
datatable1.Columns.Add(datacolumn2);
comboBox2.SelectedIndex = 4;
//for (int i = 0; i < 5; i++)
//{
// DataRow datarow1 = datatable1.NewRow();
// datarow1[0] = ((rasterStatic.Maximum - rasterStatic.Minimum) * i / 5).ToString()+"-"+ ((rasterStatic.Maximum - rasterStatic.Minimum) * (i + 1) / 5).ToString();
// datarow1[1] = i + 1;
// datatable1.Rows.Add(datarow1);
//}
dataGridView1.DataSource = datatable1;
textBox1.Text = System.Environment.CurrentDirectory + "noiseclassification.tif";
}
private void method_0()
{
IRasterBandCollection raster = this.irasterLayer_0.Raster as IRasterBandCollection;
if (raster.Count != this.irasterLayer_0.BandCount)
{
IName dataSourceName = (this.irasterLayer_0 as IDataLayer2).DataSourceName;
if (dataSourceName != null)
{
raster = dataSourceName.Open() as IRasterBandCollection;
}
}
IEnumRasterBand bands = raster.Bands;
bands.Reset();
for (IRasterBand band2 = bands.Next(); band2 != null; band2 = bands.Next())
{
this.comboBox_0.Items.Add(new BandWrap(band2));
}
string[] strArray = new string[] { "红色", raster.Item(this.irasterRGBRenderer_0.RedBandIndex).Bandname };
EXListViewItem item = new EXListViewItem(strArray);
item.SubItems.Add(new EXBoolListViewSubItem(this.irasterRGBRenderer_0.UseRedBand));
this.exListView1.Items.Add(item);
strArray[0] = "绿色";
strArray[1] = raster.Item(this.irasterRGBRenderer_0.GreenBandIndex).Bandname;
item = new EXListViewItem(strArray);
item.SubItems.Add(new EXBoolListViewSubItem(this.irasterRGBRenderer_0.UseGreenBand));
this.exListView1.Items.Add(item);
strArray[0] = "蓝色";
strArray[1] = raster.Item(this.irasterRGBRenderer_0.BlueBandIndex).Bandname;
item = new EXListViewItem(strArray);
item.SubItems.Add(new EXBoolListViewSubItem(this.irasterRGBRenderer_0.UseBlueBand));
this.exListView1.Items.Add(item);
IColor backgroundColor = (this.irasterRGBRenderer_0 as IRasterStretch2).BackgroundColor;
if (backgroundColor != null)
{
this.method_1(this.colorEdit1, backgroundColor);
}
backgroundColor = (this.irasterRGBRenderer_0 as IRasterDisplayProps).NoDataColor;
if (backgroundColor != null)
{
this.method_1(this.colorEdit2, backgroundColor);
}
object backgroundValue = (this.irasterRGBRenderer_0 as IRasterStretch2).BackgroundValue;
this.chkShowBackground.Checked = (this.irasterRGBRenderer_0 as IRasterStretch2).Background;
this.txtBackgroundR.Enabled = this.chkShowBackground.Checked;
this.txtBackgroundG.Enabled = this.chkShowBackground.Checked;
this.txtBackgroundB.Enabled = this.chkShowBackground.Checked;
double[] numArray = backgroundValue as double[];
this.txtBackgroundR.Text = numArray[0].ToString();
this.txtBackgroundG.Text = numArray[1].ToString();
this.txtBackgroundB.Text = numArray[2].ToString();
}
private void method_0()
{
IRasterBandCollection raster = this.irasterLayer_0.Raster as IRasterBandCollection;
if (this.irasterLayer_0.BandCount == 1)
{
this.lblBand.Visible = false;
this.cboBand.Visible = false;
this.cboBand.Items.Add(new BandWrap(raster.Item(0)));
}
else
{
if (raster.Count != this.irasterLayer_0.BandCount)
{
IName dataSourceName = (this.irasterLayer_0 as IDataLayer2).DataSourceName;
if (dataSourceName != null)
{
raster = dataSourceName.Open() as IRasterBandCollection;
}
}
IEnumRasterBand bands = raster.Bands;
bands.Reset();
for (IRasterBand band2 = bands.Next(); band2 != null; band2 = bands.Next())
{
this.cboBand.Items.Add(new BandWrap(band2));
}
}
this.cboBand.SelectedIndex = this.irasterStretchColorRampRenderer_0.BandIndex;
IColor backgroundColor = (this.irasterStretchColorRampRenderer_0 as IRasterStretch2).BackgroundColor;
if (backgroundColor != null)
{
this.method_1(this.colorEdit1, backgroundColor);
}
backgroundColor = (this.irasterStretchColorRampRenderer_0 as IRasterDisplayProps).NoDataColor;
if (backgroundColor != null)
{
this.method_1(this.colorEdit2, backgroundColor);
}
this.lblHight.Text =
(this.irasterStretchColorRampRenderer_0 as IRasterStretchMinMax).CustomStretchMax.ToString("0.###");
this.lblLow.Text =
(this.irasterStretchColorRampRenderer_0 as IRasterStretchMinMax).CustomStretchMin.ToString("0.###");
this.chkHillshade.Checked = (this.irasterStretchColorRampRenderer_0 as IHillShadeInfo).UseHillShade;
this.txtZFactor.Text = (this.irasterStretchColorRampRenderer_0 as IHillShadeInfo).ZScale.ToString();
this.txtHeight.Text = this.irasterStretchColorRampRenderer_0.LabelHigh;
this.txtLow.Text = this.irasterStretchColorRampRenderer_0.LabelLow;
this.txtMedium.Text = this.irasterStretchColorRampRenderer_0.LabelMedium;
this.lblZFactor.Enabled = this.chkHillshade.Checked;
this.txtZFactor.Enabled = this.chkHillshade.Checked;
this.chkShowBackground.Checked = (this.irasterStretchColorRampRenderer_0 as IRasterStretch2).Background;
this.txtBackground.Enabled = this.chkShowBackground.Checked;
this.txtBackground.Text =
(this.irasterStretchColorRampRenderer_0 as IRasterStretch2).BackgroundValue.ToString();
}
private void frm_Stretch_Load(object sender, EventArgs e)
{
int j = 1;
IRasterLayer pRasterLayer = raster_layer;
filepath = pRasterLayer.FilePath;
if (pRasterLayer.BandCount != 0)
{
IRasterBandCollection collection = pRasterLayer.Raster as IRasterBandCollection;
IEnumRasterBand rasterband = collection.Bands;
IRasterBand band = rasterband.Next();
while (band != null)
{
//绑定波段数
cmbLayerBand.Items.Add("band " + j);
j++;
band = rasterband.Next();
}
axMapControl1.Map.AddLayer(pRasterLayer);
axMapControl1.Refresh();
}
}
/// <summary>
/// Occurs when this command is clicked
/// </summary>
///
public string RasterStistics(IRasterLayer rLayer)
{
IRaster2 r2 = rLayer.Raster as IRaster2;
IRasterDataset rasterDataset = r2.RasterDataset;
IRasterBandCollection rasterBands =
(IRasterBandCollection)rasterDataset;
IEnumRasterBand enumRasterBand = rasterBands.Bands;
string sRasterStisticsResult = "Raster Statistics Result:\n";
IRasterBand rasterBand = enumRasterBand.Next();
while (rasterBand != null)
{
bool tmpBool;
rasterBand.HasStatistics(out tmpBool);
if (!tmpBool)
{
rasterBand.ComputeStatsAndHist();
}
sRasterStisticsResult += GetRasterStistics(rasterBand);
rasterBand = enumRasterBand.Next();
}
return(sRasterStisticsResult);
}
// Function with arguments that have been passed from each sensor.
public void BandCounts(GUI_AddRaster theGUI)
{
try
{
// Folder path only.
string rasterFolderPath = Path.GetDirectoryName(theGUI.textBox_PathURL.Text);
// Image file name only.
string rasterFileName = Path.GetFileName(theGUI.textBox_PathURL.Text);
// Needed for working with rasters.
IWorkspaceFactory wSF = new RasterWorkspaceFactoryClass();
// Set the raster image workspace.
IWorkspace wS = wSF.OpenFromFile(rasterFolderPath, ArcMap.Application.hWnd);
// Prepare the raster workspace.
IRasterWorkspace rasterWS = wS as IRasterWorkspace;
IRasterDataset rasterDataset;
try
{
// Open the raster image.
rasterDataset = rasterWS.OpenRasterDataset(rasterFileName);
}
catch
{
// If the raster image is invalid with no bands to count,
// catch the error and display this message.
MessageBox.Show("Invalid raster. No bands to be counted.");
return;
}
// Prepare raster image as raster layer.
IRasterLayer rasterLayer = new RasterLayerClass();
// Create the raster layer from raster image.
rasterLayer.CreateFromDataset(rasterDataset);
// Access band total for image.
IRasterBandCollection rasterBC = rasterDataset as IRasterBandCollection;
IEnumRasterBand pEnumRasterBand = rasterBC.Bands;
totalBands = rasterBC.Count;
// The following code is for accessing individual band names, if needed.
// These are unused for the code in its current format.
//int curBandCount = rasterBC.Count;
//IRasterBand pRasterBand;
//string bandName;
//while (curBandCount > 0)
//{
//pRasterBand = pEnumRasterBand.Next();
//bandName = pRasterBand.Bandname.ToString();
//curBandCount = curBandCount - 1;
//}
}
catch (Exception exc)
{
// Catch any exception found and display a message box.
MessageBox.Show("Exception caught: " + nL + exc.Message + nL + exc.StackTrace);
return;
}
}