Did you copy szip.dll? This is an oversight in the document. (You don't need
those .lib files in 'C:\Windows\System32'.)
Best, G.
-Original Message-
From: hdf-forum-boun...@hdfgroup.org [mailto:hdf-forum-boun...@hdfgroup.org]
On Behalf Of TigerPVR
Sent: Sunday, February 06, 2011 1:05 PM
Pavel, how are you? If you want to write a fixed-length string scalar
attribute,
here's a snippet of IronPython code that will get you started.
def addScalarStringAttribute(dset):
string ='ABCD'
dspace = H5S.create(H5S.H5SClass.SCALAR)
dtype = H5T.copy(H5T.H5Type.C_S1)
Pavel, how are you?
-Original Message-
From: hdf-forum-boun...@hdfgroup.org
[mailto:hdf-forum-boun...@hdfgroup.org] 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,
)
Hello Gerd Heber,
You have BOOKED a meeting in EVO (http://evo.caltech.edu).
Title: HDF5DotNet
Description:A better .NET wrapper for HDF5
Community: Universe
Password: HDF5.NET
Meeting Access Information:
- Meeting URL
http://evo.caltech.edu/evoNext/koala.jnlp
Here're the meeting minutes from yesterday's HDF5DotNet virtual meeting on
EVO.
Attendees: Jesse Lai, Scott Mitchell, Jason P., Gerd Heber
(My sincere apologies to Jason. I scribbled down his last name, but can't
find it anymore.)
The following topics were discussed:
HDF5DotNet in its current
Josh, the assertion comes out of H5F_close (in the unmanaged library).
It appears that the application is trying to close the same file twice
in the context of the same process. (H5F_close sets the file id to -1
and that would trip the assertion in the next round.)
Separate processes (but not
Josh, you definitely should call H5F.close(). I need to consult
with the local experts on what the library does in response to a device/file
system
removal (if anything). Maybe H5F_close doesn't get called twice. Maybe
the library attempts some kind of forceful cleanup and by the time your
Josha, which unmanaged binaries are you using?
G.
-Original Message-
From: hdf-forum-boun...@hdfgroup.org [mailto:hdf-forum-boun...@hdfgroup.org]
On Behalf Of josha
Sent: Thursday, May 26, 2011 5:15 PM
To: hdf-forum@hdfgroup.org
Subject: [Hdf-forum] PInvokeStackImbalance was detected
Bas, how are you? Attached is an IronPython
(http://ironpython.codeplex.com/) script that you might want
to run and recreate in C#. (IronPython uses HDF5DotNet.dll the same way you
do from C#.)
It creates a compressed, chunked dataset of a compound type (int, float,
double).
'h5dump -p -H
Kim, how are you? Out of curiosity, I would like to clarify something.
My naïve impression was that, if your keys are French words, the dataset
can't be very large.
Let's say that a highly educated English speaker has about 300,000 words in
his/her vocabulary.
Let's give a French speaker 500,000
-forum-boun...@hdfgroup.org
[mailto:hdf-forum-boun...@hdfgroup.org] On Behalf Of Gerd Heber
Sent: Thursday, August 25, 2011 8:49 AM
To: 'HDF Users Discussion List'
Subject: Re: [Hdf-forum] HDF5DotNet assembly
Don, how are you? Adding an assembly reference should be all that's
needed.
Note
You're welcome. Yes, I'm sorry, I forgot to mention that H5PT is currently
not funded/supported in HDF5DotNet. You still might want to check it out.
What if that 10klines/sec turns into 500k/lines in two years?
And, if you really like it, maybe you want to coerce us with a small
donation
into
Don, currently, there's no way to do that conversion and, frankly,
H5ArrayT is not intended to be used as some kind of array substitute.
The only reason to use H5ArrayT is to pass .NET arrays
to methods like H5D.read/write(..., new H5ArrayT(your_array)).
Why can't you just hang on to 'your_array'
Don, how about this:
byte[] my_array = ConvertToBytes(buffer);
H5A.read(curAttID, curAttNativeType, new H5ArrayByte(my_array));
// now do something with my_array
H5ArrayT is really just a shell game. If you look at the (C++) source
code, you'll see that no new arrays/elements are being
Barry, H5F::flush will be back in the HDF5DotNet release that comes out with
1.8.8.
Best, G.
-Original Message-
From: hdf-forum-boun...@hdfgroup.org [mailto:hdf-forum-
boun...@hdfgroup.org] On Behalf Of Barry Wark
Sent: Friday, September 30, 2011 11:51 AM
To: hdf-forum@hdfgroup.org
Tobias, yes, it appears that the creation order is not tracked.
As you know, a creation property must be set upon group creation via
H5Pset_link_creation_order
(http://www.hdfgroup.org/HDF5/doc/RM/RM_H5P.html#Property-SetLinkCreationOrd
er)
Currently, setting this property is not supported in
Rhys, thanks for the comment and sorry for the delay. (Just got back from
travel...)
On the data side, using a skeletal HDF5/XML dump of a datafile to check
that
it is valid according to some domain-specific schema will be handy.
I suggest adding recommended HDF5 attributes with particular
Yaqiang, how are you? Your code is pretty close, but misses a technical
detail.
The 'StructMetadata.x' scalar datasets of fixed-length ASCII encoded
strings.
Strings in .NET are Unicode-based and use 2-byte character representations
(as opposed to 1-byte for ASCII). It'd be nice to directly do a
Jesse, how are you? Please have a look at the attached IronPython script.
It shows how to write a compound type with two integer members and one
variable-length string member. I'm sure there are more elegant ways, but the
brute force writing of a byte array is effective. We use
BitConverter to get
Andrei, knowing that the lengths of all the strings in the file
don't exceed 32 doesn't help. The string type in the file is variable
length and not fixed length and the library doesn't do any kind of automatic
conversion for you. The call
H5Tset_size(strType, 32);
is well intended but wrong
Karl, yes, this is a known problem and we'll address it as soon
as we get around to it. As a workaround, you can use the Id property (of
hid_t)
of a FileId object and call H5Fflush directly.
[DllImport(hdf5dll.dll, CallingConvention=CallingConvention::Cdecl)]
extern C
herr_t _cdecl
Keith, how are you? H5DataTypeId does not derive from H5ObjectWithAttributes
because most type handles do not refer to linked or committed HDF5
datatypes,
which are the only flavors of datatypes that can be decorated with
attributes.
My suggestion for a workaround would be to wrap and call H5Oopen
Bhavini, for starters, get a copy of HDFView
http://www.hdfgroup.org/hdf-java-html/hdfview/index.html#download_hdfview
Best, G.
From: hdf-forum-boun...@hdfgroup.org [mailto:hdf-forum-boun...@hdfgroup.org] On
Behalf Of Bhavini Solanki
Sent: Tuesday, March 27, 2012 1:35 AM
To:
Lukas, all you need is to add a reference to HDF5DotNet.dll .
No references are needed for the unmanaged DLLs (hdf5_hldll.dll etc.)
I don't have vs2008, but 2010 should be pretty similar.
In the 'Add Reference' dialog, are you using the 'Browse'
tab to locate HDF5DotNet.dll?
Are you sure
Alok, which HDF5DotNet library are you talking about? I'm looking at
www.hdf5.net ,
but I can't see any of the calls from your code snippet.
Best, G.
-Original Message-
From: hdf-forum-boun...@hdfgroup.org [mailto:hdf-forum-boun...@hdfgroup.org]
On Behalf Of Jadhav, Alok
Sent: Sunday,
Rackamm, how are you? I'M traveling at the moment and will get back to you
later in the week/early next week. The general approach I'VE taken involves
dynamically generating/loading .NET code. You'd read the dataset into memory as
a byte array and then use BitConverter and the information
Mathieu, don't worry about the chunks. Just read/write what you need
in terms of the dataspace (hyperslab, point selection...) and the library
will determine for you which chunks are touched (read/written) by the
operation.
It'll just return fill values for un-allocated/partially filled chunks.
/2012 02:01 PM, Gerd Heber wrote:
Mathieu, don't worry about the chunks. Just read/write what you need
in terms of the dataspace (hyperslab, point selection...) and the
library will determine for you which chunks are touched (read/written)
by the operation.
It'll just return fill values
to store an hyperslab wich
describe where the available data is.
Thanks for your help
Mathieu
Quoting Gerd Heber ghe...@hdfgroup.org:
That's why I asked you to define the smallest hyperslab or union of
hyperslabs, or point selections that cover you chunks and read just
those. The library
Mathieu, you should bear in mind that reading a dataset is logically a
mapping between dataspaces. The underlying physical layout in the file is
irrelevant for this mapping. Users may not appreciate getting different
answers when reading the nominally same datset with different physical
layouts.
Motto: It is the stillest words that bring on the storm. Thoughts
that come on doves' feet guide the world. (*)
Dear HDF users and dear PowerShell users,
While reports from HDF5 1.8.9 release parties are still
pouring in from all corners of the planet, we would like to
offer you this
Mark, have you tried calling H5::Open() before making any other calls to
HDF5?
BTW, which HDF5DotNet/OS version are you using?
G.
-Original Message-
From: hdf-forum-boun...@hdfgroup.org [mailto:hdf-forum-boun...@hdfgroup.org]
On Behalf Of Mark Page
Sent: Monday, June 18, 2012 10:34 AM
Greg, how about https://github.com/galpin/HDF5.NET or http://hdf5.net/ ?
Best, G.
-Original Message-
From: hdf-forum-boun...@hdfgroup.org [mailto:hdf-forum-boun...@hdfgroup.org]
On Behalf Of C_gg
Sent: Thursday, June 21, 2012 4:18 AM
To: hdf-forum@hdfgroup.org
Subject: [Hdf-forum] HDF5
But now, I would like to run it... So, I wanted to use these following
.dll:
hdf5dll.dll, hdf5_hldll.dll, szip.dll, and zlib.dll.
The assembly was built against HDF5 1.8.8. You need
http://www.hdfgroup.org/ftp/HDF5/releases/hdf5-1.8.8/bin/windows/HDF5188-win
64-shared.zip
Make sure that
Would you be interested in XML or JSON snippets rather than clunky BNF?
G.
-Original Message-
From: hdf-forum-boun...@hdfgroup.org [mailto:hdf-forum-boun...@hdfgroup.org]
On Behalf Of John K
Sent: Thursday, July 26, 2012 1:20 PM
To: HDF Users Discussion List
Subject: [Hdf-forum]
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
Eugen, how are you? Yes, you can concoct something that is unique in the
file scope using addresses, but I'd be hesitant to go down that path.
I'd invest in a few UUIDs (call it whatever you want) attributes and not
look back. They survive repacks and other machinations.
True, for existing
Calixte, how are you? It's the latter. The documentation is not very precise
on this,
but HDF5 links aren't HDF5 objects. See section '1.2.2 Group', Figures 5 and
6 in the HDF5 User Guide.
http://www.hdfgroup.org/HDF5/doc/UG/
The H5L interface has several functions for inspecting HDF5 links.
Title: Putting on a Good Show with HDF5, ILNumerics, and PowerShell
Authors: Gerd Heber (The HDF Group), Haymo Kutschbach (ILNumerics)
Abstract:
In this article, we describe how a simple combination of three freely
available tools
- HDF5, ILNumerics, and PowerShell - can be used to analyze
Or pass a link creation property list to H5Dcreate2 with
H5Pset_create_intermediate_group
http://www.hdfgroup.org/HDF5/doc/RM/RM_H5P.html#Property-SetCreateIntermedia
teGroup
to create missing intermediate groups as a side-effect.
G.
-Original Message-
From:
Calixte, there is no such thing at the moment. The ability to
commit dataspaces and link them to a group might be supported in a future
version of the library. What is your scenario or use case?
Best, G.
-Original Message-
From: hdf-forum-boun...@hdfgroup.org
I think the problem is that the library currently does not provide a
matching H5XYZfree call
for some of the resources it allocates for you. Non C APIs compound the
problem and lead to the
obscure behavior you're seeing. 'free' is a well-intended guess, but still a
guess.
G.
-Original
The DLLs were made for .NET 4, not a particular version of Visual Studio.
(There are also separate DLLs for x86 and x64.)
Make sure in your project settings that you are building against the .NET 4
runtime and not 2, or 3.5.
G.
-Original Message-
From: Hdf-forum
Michael, I don't have VS2008 and can't help you there. VS2008 is just a
vehicle.
Have you ever used a compiler from the command line? The C# compiler is part
of
the .NET framework (csc.exe in
C:\Windows\Microsoft.NET\Framework64\v4.0.30319 on my machine).
and works just fine in a DOS shell or
The unmanaged DLLs (szip, zlib, hdf5dll, hdf5_hldll) need to be in a
directory in
your PATH environment. If you are using the standard binaries from
http://www.hdfgroup.org/ftp/HDF5/current/bin/windows/
they are installed in C:\Program Files\HDF Group\HDF5\VERSION\bin.
You can add that to the
] On Behalf Of Rob
Latham
Sent: Thursday, January 24, 2013 2:52 PM
To: HDF Users Discussion List
Subject: Re: [Hdf-forum] RESTful HDF5
On Tue, Jan 22, 2013 at 08:39:34AM -0600, Gerd Heber wrote:
In this document, we specify a REST interface for HDF5 data stores.
We describe HDF5 resources, URIs
Guillaume, how are you? This is an interesting question, but there're
several omissions
and assumptions that make it rather ill-posed.
The omissions have to do with what you didn't tell us (and I come back to
that in a moment).
The assumptions have to do with an unspecified base on which HDF5
Feel free to join FastBit mailing list
https://hpcrdm.lbl.gov/pipermail/fastbit-users to post your questions
regarding FastBit and FastQuery.
Best, G.
-Message d'origine-
De : Hdf-forum [mailto:hdf-forum-boun...@hdfgroup.org] De la part de Gerd
Heber Envoyé : dimanche 24 février 2013 18
C is binary compatible, no problem there. C++ is another matter.
I don't know much about the different FORTRAN flavors. Good luck! G.
From: Hdf-forum [mailto:hdf-forum-boun...@hdfgroup.org] On Behalf Of Suman
Vajjala
Sent: Sunday, March 17, 2013 1:26 AM
To: HDF Users Discussion List
Subject:
Andrew, what an interesting question! I can't answer the question, but would
like to add an observation that might help finding an answer.
HDF5 attributes and datasets represent different uses of what some would
refer
to as array variables. What is the value of such an array variable?
An (HDF5)
Bibudh, you've downloaded the static rather than the dynamic build. You
probably want
http://www.hdfgroup.org/ftp/HDF5/releases/hdf5-1.8.7/bin/mac-intel/hdf5-1.8.
7-mac-intel-shared.tar.gz
or
http://www.hdfgroup.org/ftp/HDF5/releases/hdf5-1.8.7/bin/mac-intel-x86_64/hd
From: The HDF Group [mailto:outre...@hdfgroup.ccsend.com] On Behalf Of The
HDF Group
Sent: Wednesday, April 17, 2013 2:54 PM
To: ghe...@hdfgroup.org
Subject: Gauging interest in a ODBC Driver for HDF5
http://r20.rs6.net/on.jsp?t=1113102178043.0.1113040920034.945ts=S0891o=ht
one
article,
all of us will soon be awe-struck by our ignorance and all the wonderful
things others
are doing.
Thanks, G.
Gerd Heber | The HDF Group
Applications Architect | 1800 South Oak Street
Phone: (217) 531-6109 | Suite 203
Web: www.hdfgroup.org | Champaign, IL 61820
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