Hi,
I'm a new gay for Fdo, I'm very excited that Fdo can connect to so many formats of GIS files. But I also have some problem when I use Fdo to process the USGS ASCII DEM files.
In the first step, I can open the connection to GDAL provider successfully. Then I also can read schema information and the class information, the names of schema and class are all "default". The default class has two properties, "FeatureId" and "Raster". But how can I get other information from the raster file, such as elevation value? Is the information contained in the Raster property? If so, how can I get the information from it? Should I create a new schema for this kind of file?
I saw that the data in Raster property is a bytes array when the "Select" command is executed, and the RasterModelType is RasterDataModelType_Gray, how can I convert this byte array to a Bitmap? I found that the BitsPerPixel property in Raster is 16, and I set R, G, B value in the new Bitmap to the first 8 bits, then I get an ugly bitmap. How do I use the following 8 bits?
Any comments and ideas will be much appreciated!
Thanks in advance!
semis
