private void Functions_CollectionChanging(object sender, NotifyCollectionChangingEventArgs e)
{
if (!AutoOpen())
{
return;
}
if ((e.Action == NotifyCollectionChangeAction.Add || e.Action == NotifyCollectionChangeAction.Replace) &&
e.Item is IRegularGridCoverage)
{
var grid = (IRegularGridCoverage)e.Item;
var driverName = GdalHelper.GetDriverName(path);
RegisterGdal();
using (var gdalDriver = Gdal.GetDriverByName(driverName))
{
var gdalType = GdalHelper.GetGdalDataType(gdalDriver, grid.Components[0].ValueType);
var gdalvariableValue = GdalHelper.GetVariableForDataType(gdalType);// TODO: strange logic, use supported GDAL types here (as .NET types) instead
var type = gdalvariableValue.ValueType;
if (type != grid.Components[0].ValueType)
{
throw new InvalidOperationException(string.Format("Value type {0} is not supported by GDAL driver", grid.Components[0].ValueType));
}
}
}
}
private void SubstituteDriverByInMemIfReadonly(IRegularGridCoverage addedCoverage, Driver gdalDriver)
{
var canCreate = gdalDriver.GetMetadataItem("DCAP_CREATE", null) == "YES";
//cannot create use mem driver.
if (!canCreate)
{
using (var inMemoryDriver = Gdal.GetDriverByName("MEM"))
{
DataType dataType =
GdalHelper.GetGdalDataType(inMemoryDriver, addedCoverage.Components[0].ValueType);
if (dataType.Equals(DataType.GDT_Unknown))
{
throw new NotSupportedException(
String.Format("The datatype {0} cannot be saved to this kind of file: {1}",
addedCoverage.Components[0].ValueType, System.IO.Path.GetExtension(path)));
}
gdalDataset = inMemoryDriver.Create(path, addedCoverage.SizeX, addedCoverage.SizeY,
addedCoverage.Components.Count, dataType,
new string[] { });
}
}
else
{
DataType dataType =
GdalHelper.GetGdalDataType(gdalDriver, addedCoverage.Components[0].ValueType);
if (dataType.Equals(DataType.GDT_Unknown))
{
throw new NotSupportedException(
String.Format("The datatype {0} cannot be saved to this kind of file: {1}",
addedCoverage.Components[0].ValueType, System.IO.Path.GetExtension(path)));
}
gdalDataset = gdalDriver.Create(path, addedCoverage.SizeX, addedCoverage.SizeY,
addedCoverage.Components.Count, dataType,
new string[] { });
}
}
private static Dataset GetOutputDataset <T>(Dataset gdalDataset, Driver gdalDriver, Driver targetDatasetDriver, IRegularGridCoverage gridCoverage, int rasterBandIndex, RasterBoundaries rasterBoundaries, T[] values)
{
Dataset outputDataset = gdalDataset;
if (targetDatasetDriver.ShortName == "PCRaster")
{
// Convert the in mem dataset to a pc rasterBoundaries compatible one...
Type valueType = gridCoverage.Components[0].ValueType;
DataType dataType =
GdalHelper.GetGdalDataType(targetDatasetDriver, valueType);
outputDataset = gdalDriver.Create(gridCoverage.Name, gdalDataset.RasterXSize,
gdalDataset.RasterYSize,
gridCoverage.Components.Count, dataType, new string[] { });
GdalHelper.SetValuesForBand(outputDataset, rasterBandIndex, rasterBoundaries.StartX, rasterBoundaries.StartY, rasterBoundaries.WidthX, rasterBoundaries.WidthY, values);
}
return(outputDataset);
}