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-usage: h5diff [OPTIONS] file1 file2 [obj1[ obj2]]
- file1 File name of the first HDF5 file
- file2 File name of the second HDF5 file
- [obj1] Name of an HDF5 object, in absolute path
- [obj2] Name of an HDF5 object, in absolute path
-
- OPTIONS
- -h, --help
- Print a usage message and exit.
- -V, --version
- Print version number and exit.
- -r, --report
- Report mode. Print differences.
- -v --verbose
- Verbose mode. Print differences information and list of objects.
- -vN --verbose=N
- Verbose mode with level. Print differences and list of objects.
- Level of detail depends on value of N:
- 0 : Identical to '-v' or '--verbose'.
- 1 : All level 0 information plus one-line attribute
- status summary.
- 2 : All level 1 information plus extended attribute
- status report.
- -q, --quiet
- Quiet mode. Do not produce output.
- --follow-symlinks
- Follow symbolic links (soft links and external links and compare the)
- links' target objects.
- If symbolic link(s) with the same name exist in the files being
- compared, then determine whether the target of each link is an existing
- object (dataset, group, or named datatype) or the link is a dangling
- link (a soft or external link pointing to a target object that does
- not yet exist).
- - If both symbolic links are dangling links, they are treated as being
- the same; by default, h5diff returns an exit code of 0.
- If, however, --no-dangling-links is used with --follow-symlinks,
- this situation is treated as an error and h5diff returns an
- exit code of 2.
- - If only one of the two links is a dangling link,they are treated as
- being different and h5diff returns an exit code of 1.
- If, however, --no-dangling-links is used with --follow-symlinks,
- this situation is treated as an error and h5diff returns an
- exit code of 2.
- - If both symbolic links point to existing objects, h5diff compares the
- two objects.
- If any symbolic link specified in the call to h5diff does not exist,
- h5diff treats it as an error and returns an exit code of 2.
- --no-dangling-links
- Must be used with --follow-symlinks option; otherwise, h5diff shows
- error message and returns an exit code of 2.
- Check for any symbolic links (soft links or external links) that do not
- resolve to an existing object (dataset, group, or named datatype).
- If any dangling link is found, this situation is treated as an error
- and h5diff returns an exit code of 2.
- -c, --compare
- List objects that are not comparable
- -N, --nan
- Avoid NaNs detection
- -n C, --count=C
- Print differences up to C. C must be a positive integer.
- -d D, --delta=D
- Print difference if (|a-b| > D). D must be a positive number.
- Can not use with '-p' or '--use-system-epsilon'.
- -p R, --relative=R
- Print difference if (|(a-b)/b| > R). R must be a positive number.
- Can not use with '-d' or '--use-system-epsilon'.
- --use-system-epsilon
- Print difference if (|a-b| > EPSILON), EPSILON is system defined value.
- If the system epsilon is not defined,one of the following predefined
- values will be used:
- FLT_EPSILON = 1.19209E-07 for floating-point type
- DBL_EPSILON = 2.22045E-16 for double precision type
- Can not use with '-p' or '-d'.
- --exclude-path "path"
- Exclude the specified path to an object when comparing files or groups.
- If a group is excluded, all member objects will also be excluded.
- The specified path is excluded wherever it occurs.
- This flexibility enables the same option to exclude either objects that
- exist only in one file or common objects that are known to differ.
-
- When comparing files, "path" is the absolute path to the excluded;
- object; when comparing groups, "path" is similar to the relative
- path from the group to the excluded object. This "path" can be
- taken from the first section of the output of the --verbose option.
- For example, if you are comparing the group /groupA in two files and
- you want to exclude /groupA/groupB/groupC in both files, the exclude
- option would read as follows:
- --exclude-path "/groupB/groupC"
-
- If there are multiple paths to an object, only the specified path(s)
- will be excluded; the comparison will include any path not explicitly
- excluded.
- This option can be used repeatedly to exclude multiple paths.
-
- Modes of output:
- Default mode: print the number of differences found and where they occured
- -r Report mode: print the above plus the differences
- -v Verbose mode: print the above plus a list of objects and warnings
- -q Quiet mode: do not print output
-
- File comparison:
- If no objects [obj1[ obj2]] are specified, the h5diff comparison proceeds as
- a comparison of the two files' root groups. That is, h5diff first compares
- the names of root group members, generates a report of root group objects
- that appear in only one file or in both files, and recursively compares
- common objects.
-
- Object comparison:
- 1) Groups
- First compares the names of member objects (relative path, from the
- specified group) and generates a report of objects that appear in only
- one group or in both groups. Common objects are then compared recursively.
- 2) Datasets
- Array rank and dimensions, datatypes, and data values are compared.
- 3) Datatypes
- The comparison is based on the return value of H5Tequal.
- 4) Symbolic links
- The paths to the target objects are compared.
- (The option --follow-symlinks overrides the default behavior when
- symbolic links are compared.).
-
- Exit code:
- 0 if no differences, 1 if differences found, 2 if error
-
- Examples of use:
- 1) h5diff file1 file2 /g1/dset1 /g1/dset2
- Compares object '/g1/dset1' in file1 with '/g1/dset2' in file2
-
- 2) h5diff file1 file2 /g1/dset1
- Compares object '/g1/dset1' in both files
-
- 3) h5diff file1 file2
- Compares all objects in both files
-
- Notes:
- file1 and file2 can be the same file.
- Use h5diff file1 file1 /g1/dset1 /g1/dset2 to compare
- '/g1/dset1' and '/g1/dset2' in the same file
-
-h5diff error: missing file names
-EXIT CODE: 1