Andy, very odd indeed. Does SMS expect a scalar dataset of a fixed or variable-length string type?
Are we sure that it's not finding the dataset or it's finding it and not happy with the content and still saying it's not finding it? (You could verify that by creating a scalar integer dataset '/File Type' and see if you get the same problem.) If that's the case, it might be down to a subtlety such as the following: I'd have to refresh my mind if H5T.setSize(*, 5) creates 4 or 5 usable characters. In any event, you are not writing the terminating null character. You are writing only 4 bytes (88, 100, 109, 102). Try a 5 byte array with a 0 at the end. What happens? (HDFView might append that for your automatically.) G. From: hdf-forum-boun...@hdfgroup.org [mailto:hdf-forum-boun...@hdfgroup.org] On Behalf Of Andywizma Sent: Saturday, August 11, 2012 11:34 PM To: hdf-forum@hdfgroup.org Subject: [Hdf-forum] HDF5DotNet vs HDFView (write string dataset) Hi all, I am writing a utility program that generates a .h5 file for the pre/post-processor SMS. The first thing SMS does is check for a scalar dataset in the .h5 file called 'File Type' that contains the string "Xmdf". If SMS fails to find this it will report a certain error. I am using the HDF5DotNet 1.8.9 wrappers and generate the dataset with the following code: Dim enc As New System.Text.ASCIIEncoding Dim myType1 As H5DataTypeId = H5T.copy(H5T.H5Type.C_S1) H5T.setSize(myType1, 5) Dim mySpaceID As H5DataSpaceId = H5S.create(H5S.H5SClass.SCALAR) Dim myDataSetId As H5DataSetId = H5D.create(xid, "File Type", myType1, mySpaceID) Dim h5str1 As New H5Array(Of System.Byte)(enc.GetBytes("Xmdf")) H5D.write(myDataSetId, myType1, h5str1) If I open my generated .h5 file in HDFView everything appears fine: the scalar dataset is there and contains the string "Xmdf". However SMS will not load the file and gives the error indicating that it cannot find the 'File Type' dataset. If I manually delete the 'File Type' dataset from within HDFView and then manually add it back in, the file can be read by SMS without a problem. Can anyone explain if there is a difference between how I am writing the string dataset and how HDFView writes the dataset, or what I can do to attempt to solve the problem? SMS tech support have simply said "check the way in which the dataset is being written". Any thoughts/tips/pointers much appreciated! Kind regards, Andy Wiersma _____ View this message in context: HDF5DotNet vs HDFView (write string dataset) <http://hdf-forum.184993.n3.nabble.com/HDF5DotNet-vs-HDFView-write-string-da taset-tp4025303.html> Sent from the hdf-forum mailing list archive <http://hdf-forum.184993.n3.nabble.com/> at Nabble.com.
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