/// <summary>
/// Check the Name and Alias properties of the given Raster Function Variable to see
/// if they contain a reference to a field and get the value of the corresponding field if needed.
/// </summary>
/// <param name="rasterFunctionVar">The Raster Function Variable to check.</param>
/// <param name="pRow">The row corresponding to the function raster dataset.</param>
/// <returns></returns>
private object FindPropertyInRow(IRasterFunctionVariable rasterFunctionVar, IRow pRow)
{
string varName = "";
IStringArray varNames = new StrArrayClass();
varName = rasterFunctionVar.Name;
// If the name of the variable contains '@Field'
if (varName.Contains("@Field."))
{
varNames.Add(varName); // Add it to the list of names.
}
// Check the aliases of the variable
for (int i = 0; i < rasterFunctionVar.Aliases.Count; ++i)
{
// Check the list of aliases for the '@Field' string
varName = rasterFunctionVar.Aliases.get_Element(i);
if (varName.Contains("@Field."))
{
varNames.Add(varName); // and add any that are found to the list of names.
}
}
// Use the list of names and find the value by looking up the appropriate field.
for (int i = 0; i < varNames.Count; ++i)
{
// Get the variable name containing the field string
varName = varNames.get_Element(i);
// Replace the '@Field' with nothing to get just the name of the field.
string fieldName = varName.Replace("@Field.", "");
IFields rowFields = pRow.Fields;
// Look up the index of the field name in the row.
int fieldIndex = rowFields.FindField(fieldName);
// If it is a valid index and the field type is string, return the value.
if (fieldIndex != -1 &&
((rowFields.get_Field(fieldIndex)).Type == esriFieldType.esriFieldTypeString))
{
return(pRow.get_Value(fieldIndex));
}
}
// If no value has been returned yet, return null.
return(null);
}
/// <summary>
/// Sets band properties on a given dataset including stats, band names and wavelengths.
/// </summary>
/// <param name="dataset">The dataset to set properties on.</param>
/// <param name="dimParser">Dimap parser to read properties from.</param>
private void SetBandProperties(IDataset dataset, DiMapParser dimParser)
{
try
{
// Set band band props.
IRasterKeyProperties rasterKeyProps = (IRasterKeyProperties)dataset;
IRasterBandCollection rasterBandColl = (IRasterBandCollection)dataset;
int imageNumBands = ((IFunctionRasterDataset)dataset).RasterInfo.BandCount;
int dinNumBands = dimParser.NumBands;
int[] bandIndexes = new int[dinNumBands];
IStringArray bandNames = new StrArrayClass();
for (int i = 0; i < dinNumBands; ++i)
{
// Get band index for the first band.
bandIndexes[i] = Convert.ToInt16(dimParser.GetBandIndex(i));
// Validate band index.
if (bandIndexes[i] > 0 && bandIndexes[i] <= imageNumBands)
{
// Get Band Name for the index.
bandNames.Add(dimParser.GetBandDesc(bandIndexes[i]));
// Get Band stats for the index.
IRasterStatistics bandStats = new RasterStatisticsClass();
bandStats.Minimum = Convert.ToDouble(dimParser.GetBandStatMin(bandIndexes[i]));
bandStats.Maximum = Convert.ToDouble(dimParser.GetBandStatMax(bandIndexes[i]));
bandStats.Mean = Convert.ToDouble(dimParser.GetBandStatMean(bandIndexes[i]));
bandStats.StandardDeviation = Convert.ToDouble(dimParser.GetBandStatStdDev(bandIndexes[i]));
// Set stats on the dataset.
((IRasterBandEdit2)rasterBandColl.Item(bandIndexes[i] - 1)).AlterStatistics(bandStats);
// Set Band Name and wavelengths according to the name.
rasterKeyProps.SetBandProperty("BandName", (bandIndexes[i] - 1), bandNames.get_Element(i));
SetBandWavelengths(dataset, (bandIndexes[i] - 1));
// Refresh dataset so changes are saved.
((IRasterDataset3)dataset).Refresh();
}
}
}
catch (Exception exc)
{
string error = exc.Message;
}
}
/// <summary>
/// Check the Name and Alias properties of the given Raster Function Variable to see
/// if they contain a reference to a field and get the value of the corresponding field if needed.
/// </summary>
/// <param name="rasterFunctionVar">The Raster Function Variable to check.</param>
/// <param name="pRow">The row corresponding to the function raster dataset.</param>
/// <returns></returns>
private object FindPropertyInRow(IRasterFunctionVariable rasterFunctionVar, IRow pRow)
{
string varName = "";
IStringArray varNames = new StrArrayClass();
varName = rasterFunctionVar.Name;
// If the name of the variable contains '@Field'
if (varName.Contains("@Field."))
varNames.Add(varName); // Add it to the list of names.
// Check the aliases of the variable
for (int i = 0; i < rasterFunctionVar.Aliases.Count; ++i)
{
// Check the list of aliases for the '@Field' string
varName = rasterFunctionVar.Aliases.get_Element(i);
if (varName.Contains("@Field."))
varNames.Add(varName); // and add any that are found to the list of names.
}
// Use the list of names and find the value by looking up the appropriate field.
for (int i = 0; i < varNames.Count; ++i)
{
// Get the variable name containing the field string
varName = varNames.get_Element(i);
// Replace the '@Field' with nothing to get just the name of the field.
string fieldName = varName.Replace("@Field.", "");
IFields rowFields = pRow.Fields;
// Look up the index of the field name in the row.
int fieldIndex = rowFields.FindField(fieldName);
// If it is a valid index and the field type is string, return the value.
if (fieldIndex != -1 &&
((rowFields.get_Field(fieldIndex)).Type == esriFieldType.esriFieldTypeString))
return pRow.get_Value(fieldIndex);
}
// If no value has been returned yet, return null.
return null;
}
