Pavel, how are you?
> -----Original Message-----
> From: [email protected]
[mailto:[email protected]] On Behalf Of Pavel Rudchenko
> Sent: Sunday, March 06, 2011 4:59 PM
> To: HDF Users Discussion List
> Subject: Re: [Hdf-forum] Read and wrote string attributes
>
> Hello, thank you!
>
>Now I can write string attributes.
>But can't read it back...
Here's another snippet of IronPython that will get you started.
The method iterates over a dataset's (dset) attributes and reads/prints
its fixed-length string attributes:
def findScalarFixedStringAttribute(dset):
info = H5O.getInfo(dset)
for i in range(info.nAttributes):
attr = H5A.openByIndex(dset, '.', H5IndexType.CRT_ORDER,
H5IterationOrder.INCREASING, Int64(i))
dtype = H5A.getType(attr)
tclass = H5T.getClass(dtype)
# ignore variable length strings
if tclass == H5T.H5TClass.STRING and not
H5T.isVariableString(dtype):
mtype = H5T.getNativeType(dtype, H5T.Direction.ASCEND)
buffer = Array.CreateInstance(Byte, H5T.getSize(mtype))
H5A.read(attr, mtype, H5Array[Byte](buffer))
enc = System.Text.ASCIIEncoding()
fmt = 'Found string attribute; its index is %d , value = %s'
print fmt % (i, enc.GetString(buffer))
H5T.close(mtype)
H5T.close(dtype)
H5A.close(attr)
return None
Best, G.
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