Comments (5)
The difference is that if the tag is not in the tag dictionary, the library does not know how to interpret the data. It stores it as an Unknown VR type. What I should add is a method of the Unknown VR type that does something like :
var success = UnknownVR.TryAs<>(out fpsValue);
In the meantime, you can use the data parser to get the data. Unknown VR types just store the raw bytes of the data along with the tag, so you could use:
var vals= dcm.FindAll("30091047")
.Select(d => d as Unknown)
.Select(u=> new FloatingPointSingle(u.Tag, LittleEndianReader.ReadSinglePrecision(u.Data));
.ToList();
from evil-dicom.
I tried what you suggested (several different ways actually...)
var vals = dcm.FindAll("30091047")
.Select(d => d as Unknown)
.Select(u=> new FloatingPointSingle(u.Tag, LittleEndianReader.ReadSinglePrecision(u.Data))
.ToList());
It shows: u.Data shows - Argument type "System.Collections.Generic.List" is not assignable to parameter type byte[]
And also .ToList is not available. I thought that you may have meant _DData.
from evil-dicom.
I wish I could specify a VR on the call to FindAll or somehow add my private elements which I assume I could do but I would have to rebuild the library.
from evil-dicom.
I'm sorry. I should have tested my code before posting here. This works for me.
var found = dcm.FindAll("30091047")
.Select(f => f as Unknown)
.Select(u=>new FloatingPointSingle(u.Tag, LittleEndianReader.ReadSinglePrecision(u.Data_.ToArray())))
.ToList();
Here is the full test:
var dcm = new DICOMObject();
var fs = new FloatingPointSingle(new Tag("30091047"), 25.0f);
dcm.Add(fs);
dcm.Write("test.dcm", new EvilDICOM.Core.IO.Writing.DICOMWriteSettings() { TransferSyntax = EvilDICOM.Core.Enums.TransferSyntax.IMPLICIT_VR_LITTLE_ENDIAN });
dcm = DICOMObject.Read("test.dcm");
var found = dcm.FindAll("30091047")
.Select(f => f as Unknown)
.Select(u=>new FloatingPointSingle(u.Tag, LittleEndianReader.ReadSinglePrecision(u.Data_.ToArray())))
.ToList();
Assert.IsTrue(found.First() is FloatingPointSingle);
from evil-dicom.
That did the trick. Thanks so much.
from evil-dicom.
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