Hello everyone! I am currently trying to translate i python code to julia! What i am trying to do, broken down, is creating a dataset where dtype=“String”. I know that to do that in python you have to declare a special datatype from the “h5py” package, vlen. In Julia, i first tried to use simply “…

Hmm…, I see. Something does seem to have gone wrong with converting String to a HDF5 type when we added support for some arbitrary structs. You can describe a String as follows in the meantime. julia> const H5String = HDF5.Datatype(HDF5.API.h5t_create(HDF5.API.H5T_STRING, HDF5.API.H5T_VARIABLE)) H…

Where is the Symbol? Can you translate our symbol to a string or fixed length string? HDF5.jl is for HDF5 things. You might want to look into JLD.jl (uses HDF5.jl) or JLD2.jl (independent HDF5 implementation) to see if that might translate your structure directly.

I’m still investigating your issue, but the following is the the tested path to get the above to work. julia> using HDF5 julia> h5open("jltest.h5", "w") do f ds = write(f, "string", "Hello world!") end julia> h5open("jltest.h5", "r") do f read(f["string"]) end …

thank you very much, this works nicely! is there some list of the supported datatypes and their names? thank you!

I would take a look at the HDF5 documentation itself: https://docs.hdfgroup.org/hdf5/v1_12/group___h5_t.html#gaa9afc38e1a7d35e4d0bec24c569b3c65

Hello again! Unfourtunately I found out that the solution does not work after all. The Error went away, however when i want to write to a Dataset with write(dset, data), where data is a simple string, it says the following: H5T__path_find_real: Datatype/Unable to initialize object no appropri…

Could you show me a minimum example that produces this error? Adapting from above, I’ve already demonstrated how to write a simple string to a dataset. This should work with the released HDF5.jl v0.16.14. However, this creates and writes a fixed length strings. julia> using HDF5 julia> h5open("jl…

[image] mkitti: dset = f["dataset_name"] dtype = datatype(dset) # H5String as above dspace = dataspace(dset) # HDF5.API.H5S_ALL == 0 xfer = 0 # HDF5.API.H5P_DEFAULT == 0 HDF5.API.h5d_write(dset, dtype, dspace, dspace, xfer, Ref{Cstring}(["go…

I think I found the solution, it is because the help function mentions write_attribute but not HDF5.h5a_write, which does work like this: # Create the PointData group and the dataset inside it field_data_group = create_group(vtkhdf_group, "PointData") attr = create_attribute(field_data_…

HDF5.jl variable length string

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HDF5.jl variable length string

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