diff options
Diffstat (limited to 'src/Alpha_complex/utilities/README')
| -rw-r--r-- | src/Alpha_complex/utilities/README | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/Alpha_complex/utilities/README b/src/Alpha_complex/utilities/README index 67ea1875..6e7d16b7 100644 --- a/src/Alpha_complex/utilities/README +++ b/src/Alpha_complex/utilities/README @@ -39,6 +39,23 @@ N.B.: +## `exact_alpha_complex_3d_persistence` ## +Same as `alpha_complex_3d_persistence`, but using exact computation. It is slower, but it is necessary when points are on a grid for instance. + + + +## `weighted_alpha_complex_3d_persistence` ## +Same as `alpha_complex_3d_persistence`, but using weighted points. + +**Usage** +`weighted_alpha_complex_3d_persistence <input OFF file> <input weights file> <p> <min_persistence>` +where +`<input OFF file>` is the path to the input point cloud in OFF format. +`<input weights file>` is the path to the file containing the weights of the points (one value per line). +`<p>` is the characteristic p of the coefficient field *Z/pZ* for computing homology. It must be a stricly positive integer. +`<min_persistence>` is the minimal lifetime of homology feature to be recorded. Enter a negative value to see zero length intervals. + + ## `periodic_alpha_complex_3d_persistence` ## This program computes the persistent homology with coefficient field Z/pZ of the 3D periodic alpha complex built from a 3D point cloud. The output diagram contains one bar per line, written with the convention: |