mirror of
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99 lines
5.1 KiB
Plaintext
99 lines
5.1 KiB
Plaintext
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#############################
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Expected output for 'h5dump -d /DS08BITS -M 4,0 packedbits.h5'
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#############################
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usage: h5dump [OPTIONS] file
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OPTIONS
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-h, --help Print a usage message and exit
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-n, --contents Print a list of the file contents and exit
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-B, --superblock Print the content of the super block
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-H, --header Print the header only; no data is displayed
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-A, --onlyattr Print the header and value of attributes
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-i, --object-ids Print the object ids
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-r, --string Print 1-byte integer datasets as ASCII
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-e, --escape Escape non printing characters
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-V, --version Print version number and exit
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-a P, --attribute=P Print the specified attribute
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-d P, --dataset=P Print the specified dataset
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-y, --noindex Do not print array indices with the data
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-p, --properties Print dataset filters, storage layout and fill value
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-f D, --filedriver=D Specify which driver to open the file with
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-g P, --group=P Print the specified group and all members
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-l P, --soft-link=P Print the value(s) of the specified soft link
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-o F, --output=F Output raw data into file F
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-b B, --binary=B Binary file output, of form B
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-t P, --datatype=P Print the specified named datatype
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-w N, --width=N Set the number of columns of output. A value of 0 (zero)
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sets the number of columns to the maximum (65535).
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Default width is 80 columns.
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-m T, --format=T Set the floating point output format
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-q Q, --sort_by=Q Sort groups and attributes by index Q
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-z Z, --sort_order=Z Sort groups and attributes by order Z
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-M L, --packedbits=L Print packed bits as unsigned integers, using mask
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format L for an integer dataset specified with
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option -d. L is a list of offset,length values,
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separated by commas. Offset is the beginning bit in
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the data value and length is the number of bits of
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the mask.
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-R, --region Print dataset pointed by region references
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-x, --xml Output in XML using Schema
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-u, --use-dtd Output in XML using DTD
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-D U, --xml-dtd=U Use the DTD or schema at U
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-X S, --xml-ns=S (XML Schema) Use qualified names n the XML
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":": no namespace, default: "hdf5:"
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E.g., to dump a file called `-f', use h5dump -- -f
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--enable-error-stack Prints messages from the HDF5 error stack as they
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occur.
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Subsetting is available by using the following options with a dataset
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attribute. Subsetting is done by selecting a hyperslab from the data.
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Thus, the options mirror those for performing a hyperslab selection.
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One of the START, COUNT, STRIDE, or BLOCK parameters are mandatory if you do subsetting.
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The STRIDE, COUNT, and BLOCK parameters are optional and will default to 1 in
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each dimension. START is optional and will default to 0 in each dimension.
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-s START, --start=START Offset of start of subsetting selection
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-S STRIDE, --stride=STRIDE Hyperslab stride
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-c COUNT, --count=COUNT Number of blocks to include in selection
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-k BLOCK, --block=BLOCK Size of block in hyperslab
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START, COUNT, STRIDE, and BLOCK - is a list of integers the number of which are equal to the
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number of dimensions in the dataspace being queried
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D - is the file driver to use in opening the file. Acceptable values
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are "sec2", "family", "split", "multi", "direct", and "stream". Without
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the file driver flag, the file will be opened with each driver in
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turn and in the order specified above until one driver succeeds
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in opening the file.
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F - is a filename.
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P - is the full path from the root group to the object.
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N - is an integer greater than 1.
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T - is a string containing the floating point format, e.g '%.3f'
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U - is a URI reference (as defined in [IETF RFC 2396],
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updated by [IETF RFC 2732])
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B - is the form of binary output: NATIVE for a memory type, FILE for the
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file type, LE or BE for pre-existing little or big endian types.
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Must be used with -o (output file) and it is recommended that
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-d (dataset) is used. B is an optional argument, defaults to NATIVE
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Q - is the sort index type. It can be "creation_order" or "name" (default)
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Z - is the sort order type. It can be "descending" or "ascending" (default)
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Examples:
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1) Attribute foo of the group /bar_none in file quux.h5
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h5dump -a /bar_none/foo quux.h5
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2) Selecting a subset from dataset /foo in file quux.h5
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h5dump -d /foo -s "0,1" -S "1,1" -c "2,3" -k "2,2" quux.h5
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3) Saving dataset 'dset' in file quux.h5 to binary file 'out.bin'
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using a little-endian type
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h5dump -d /dset -b LE -o out.bin quux.h5
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4) Display two packed bits (bits 0-1 and bits 4-6) in the dataset /dset
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h5dump -d /dset -M 0,1,4,3 quux.h5
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h5dump error: Packed Bit length value(0) must be positive.
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