Hi Johan,
The second argument to H5Dwrite function (referring to C API, not C++)
sets the type of single element which is expected in data buffer. If you
set this to H5T_NATIVE_DOUBLE everything should be fine and data should
be properly written since data buffer is just a pointer (void*).
https://support.hdfgroup.org/HDF5/doc/RM/RM_H5D.html#Dataset-Write
Usually -1 status means that you messed something with memory space and
file space (3rd and 4th argument of H5Dwrite) and/or dataset dimensions.
Please send some of your code examples (including how dataset is
created) for further investigation...
Regards,
Rafal
W dniu 2017-10-18 o 14:21, Johan Lindberg pisze:
Hi,
Is there a way to write raw binary byte array data to an existing
dataset of a different type? E.g., if I have a byte array that
represents an array of doubles (the byte array thus has 8 times as many
elements as the double array, where each set of 8 bytes represents a
double), can I somehow write that data to a double dataset in an HDF5
file? Trying this the naïve way with HDF.write just returns a -1 status.
The reason why I don't just convert it to a double array before writing
is that I have an instrument which returns all its data in byte arrays,
no matter the type, and then I'd have to write a converter for each of
the 10 different types it output in.
Thank you,
Johan Lindberg
--
Dr. Johan E. Lindberg
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_______________________________________________
Hdf-forum is for HDF software users discussion.
[email protected]
http://lists.hdfgroup.org/mailman/listinfo/hdf-forum_lists.hdfgroup.org
Twitter: https://twitter.com/hdf5
