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| author | vrouvrea <vrouvrea@636b058d-ea47-450e-bf9e-a15bfbe3eedb> | 2018-01-29 16:34:16 +0000 |
|---|---|---|
| committer | vrouvrea <vrouvrea@636b058d-ea47-450e-bf9e-a15bfbe3eedb> | 2018-01-29 16:34:16 +0000 |
| commit | c50ac9a8e5d1f506cc79b9c1e623228fffd545bf (patch) | |
| tree | 894e41f3f685000c95b54456bbdb935daaf1084d /src/Witness_complex/utilities/witnesscomplex.md | |
| parent | c2d46e0e6cfea1927875219bd5e03962cef7b010 (diff) | |
Rename README files for web site generation conformity
git-svn-id: svn+ssh://scm.gforge.inria.fr/svnroot/gudhi/trunk@3177 636b058d-ea47-450e-bf9e-a15bfbe3eedb
Former-commit-id: 632b264790c30accb42e731c4a4f6744a2f7ba11
Diffstat (limited to 'src/Witness_complex/utilities/witnesscomplex.md')
| -rw-r--r-- | src/Witness_complex/utilities/witnesscomplex.md | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/src/Witness_complex/utilities/witnesscomplex.md b/src/Witness_complex/utilities/witnesscomplex.md new file mode 100644 index 00000000..5cdb1f88 --- /dev/null +++ b/src/Witness_complex/utilities/witnesscomplex.md @@ -0,0 +1,76 @@ +---
+layout: page
+title: "Witness complex"
+meta_title: "witnesscomplex"
+subheadline: ""
+teaser: ""
+permalink: "/witnesscomplex/"
+---
+{::comment}
+These flags above are here for web site generation, please let them.
+cf. https://gitlab.inria.fr/GUDHI/website
+Must be in conformity with _data/navigation.yml
+{:/comment}
+
+
+For more details about the witness complex, please read the [user manual of the package](http://gudhi.gforge.inria.fr/doc/latest/group__witness__complex.html).
+
+## weak_witness_persistence ##
+This program computes the persistent homology with coefficient field *Z/pZ* of a Weak witness complex defined on a set of input points.
+The output diagram contains one bar per line, written with the convention:
+
+`p dim birth death`
+
+where `dim` is the dimension of the homological feature, `birth` and `death` are respectively the birth and death of the feature,
+and `p` is the characteristic of the field *Z/pZ* used for homology coefficients.
+
+**Usage**
+
+`weak_witness_persistence [options] <OFF input file>`
+
+**Allowed options**
+
+* `-h [ --help ]` Produce help message
+* `-l [ --landmarks ]` Number of landmarks to choose from the point cloud.
+* `-o [ --output-file ]` Name of file in which the persistence diagram is written. By default, print in std::cout.
+* `-a [ --max-sq-alpha ]` (default = inf) Maximal squared relaxation parameter.
+* `-p [ --field-charac ]` (default = 11) Characteristic p of the coefficient field Z/pZ for computing homology.
+* `-m [ --min-persistence ]` (default = 0) Minimal lifetime of homology feature to be recorded. Enter a negative value to see zero length intervals.
+* `-d [ --cpx-dimension ]` (default = 2147483647) Maximal dimension of the weak witness complex we want to compute.
+
+**Example**
+
+`weak_witness_persistence data/points/tore3D_1307.off -l 20 -a 0.5 -m 0.006`
+
+N.B.: output is random as the 20 landmarks are chosen randomly.
+
+
+## strong_witness_persistence ##
+
+This program computes the persistent homology with coefficient field *Z/pZ* of a Strong witness complex defined on a set of input points.
+The output diagram contains one bar per line, written with the convention:
+
+`p dim birth death`
+
+where `dim` is the dimension of the homological feature, `birth` and `death` are respectively the birth and death of the feature,
+and `p` is the characteristic of the field *Z/pZ* used for homology coefficients.
+
+**Usage**
+
+`strong_witness_persistence [options] <OFF input file>`
+
+**Allowed options**
+
+* `-h [ --help ]` Produce help message
+* `-l [ --landmarks ]` Number of landmarks to choose from the point cloud.
+* `-o [ --output-file ]` Name of file in which the persistence diagram is written. By default, print in std::cout.
+* `-a [ --max-sq-alpha ]` (default = inf) Maximal squared relaxation parameter.
+* `-p [ --field-charac ]` (default = 11) Characteristic p of the coefficient field Z/pZ for computing homology.
+* `-m [ --min-persistence ]` (default = 0) Minimal lifetime of homology feature to be recorded. Enter a negative value to see zero length intervals.
+* `-d [ --cpx-dimension ]` (default = 2147483647) Maximal dimension of the weak witness complex we want to compute.
+
+**Example**
+
+`strong_witness_persistence data/points/tore3D_1307.off -l 20 -a 0.5 -m 0.06`
+
+N.B.: output is random as the 20 landmarks are chosen randomly.
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