Hi John,
Thanks for the reply and making the feature request for HDFView. You and
Werner are correct that the dump/ls tools do produce information about
committed types - and this is the debug information I was after - unless
they are part of a H5T_COMPOUND.
In the case of a compound, only raw information about the datatype is
presented. It would be good if it were able to present the location of
committed types in the same way, e.g.
DATASET "test" {
> DATATYPE H5T_COMPOUND {
> H5T_IEEE_F64LE "a";
> H5T_IEEE_F64LE "b";
> H5T_IEEE_F64LE "c";
> }
> ...
becomes
DATASET "test" {
> DATATYPE H5T_COMPOUND {
> "/unit1" "a";
> "/unit2" "b";
> "/unit3" "c";
> }
> ...
or similar.
Cheers,
Martijn
On 9 December 2014 at 18:13, John Readey <[email protected]> wrote:
> Hi Martijn,
> In h5dump, I see that datasets that use a committed types have the path
> to the type identified. E.g.:
>
> DATASET "dset1" {
>
> DATATYPE "/dtype1"
>
> DATASPACE SIMPLE { ( 10 ) / ( 10 ) }
>
> DATA {
>
> (0): 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
>
> }
>
> }
>
> DATATYPE "dtype1" H5T_IEEE_F32LE;
>
>
>
> Is that not sufficient to see how the committed type is used?
>
>
> In HDFView, the committed types are shown in the Tree View, but
> dataset’s that reference them don’t indicate this. So that would be a good
> feature to add. I’ve created an issue to track this request.
>
>
> Regards,
>
> John Readey
>
> The HDF Group
>
>
>
>
> From: Werner Benger <[email protected]>
> Reply-To: "[email protected]" <[email protected]>
> Date: Sunday, November 16, 2014 at 6:41 AM
> To: "[email protected]" <[email protected]>
> Subject: Re: [Hdf-forum] Committed datatypes in HDFView/h5dump
>
> Hi Martijn,
>
> if you use h5ls, then it will indicate named data types as being "shared"
> such as:
>
>
> h5ls -rv
> LOD.f5/t=000000000.0000000000/Triangulation/Faces/Points/Positions
> Opened "LOD.f5" with sec2 driver.
> t=000000000.0000000000/Triangulation/Faces/Points/Positions Dataset
> {94525/94525}
> Location: 1:1442029
> Links: 1
> Modified: 2014-09-17 01:34:18 Central Daylight Time
> Storage: 1134300 logical bytes, 1134300 allocated bytes, 100.00%
> utilization
> Type: shared-1:1440965 struct {
> "i" +0 native 32-bit field
> "j" +4 native 32-bit field
> "k" +8 native 32-bit field
> } 12 bytes
>
>
> If you do an h5ls on the type itself, it will show its attributes and the
> shared-identifier as well:
>
> h5ls -rv LOD.f5/Charts/triangular/SinglePrecision/Point
> Opened "LOD.f5" with sec2 driver.
> Charts/triangular/SinglePrecision/Point Type
> Attribute: ChartDomain scalar
> Type: 11-byte null-terminated ASCII string
> Data: "triangular"
> Attribute: F5::CellDimensionality scalar
> Type: native int
> Data: 2
> Attribute: MemoryOrder {3}
> Type: native int
> Data: 1, 0, -1
> Location: 1:1440965
> Links: 2
> Modified: 2014-09-17 01:34:18 Central Daylight Time
> Type: shared-1:1440965 struct {
> "i" +0 native 32-bit field
> "j" +4 native 32-bit field
> "k" +8 native 32-bit field
> } 12 bytes
>
>
> Cheers,
>
> Werner
>
>
> On 16.11.2014 02:12, Martijn Jasperse wrote:
>
> Hi all,
> I'd like to be able to tell in HDFView/h5dump when a dataset has a
> committed datatype. Ideally I'd like a path to the committed type be
> provided (a la H5Iget_name), but it would be sufficient to identify it as
> being a committed type. It would be very useful to me for the debugging
> tools to display this and not have to use my tools to check their files.
>
> I'm using committed types to implement a type of units handling, and it
> works great, except that the standard tools are not very helpful in working
> with them. It would be excellent to add this feature to HDFView and/or
> h5dump, but I would also be interested in other approaches and/or
> workarounds.
>
> Cheers,
> Martijn
>
>
> _______________________________________________
> Hdf-forum is for HDF software users discussion.
> [email protected]http://mail.lists.hdfgroup.org/mailman/listinfo/hdf-forum_lists.hdfgroup.org
> Twitter: https://twitter.com/hdf5
>
>
> --
> ___________________________________________________________________________
> Dr. Werner Benger Visualization Research
> Center for Computation & Technology at Louisiana State University (CCT/LSU)
> 2019 Digital Media Center, Baton Rouge, Louisiana 70803
> Tel.: +1 225 578 4809 Fax.: +1 225 578-5362
>
>
> _______________________________________________
> Hdf-forum is for HDF software users discussion.
> [email protected]
>
> http://mail.lists.hdfgroup.org/mailman/listinfo/hdf-forum_lists.hdfgroup.org
> Twitter: https://twitter.com/hdf5
>
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