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diff --git a/utilities/Nerve_GIC/covercomplex.md b/utilities/Nerve_GIC/covercomplex.md deleted file mode 100644 index 683c1b75..00000000 --- a/utilities/Nerve_GIC/covercomplex.md +++ /dev/null @@ -1,69 +0,0 @@ ---- -layout: page -title: "Cover complex" -meta_title: "Cover complex" -teaser: "" -permalink: /covercomplex/ ---- -{::comment} -Leave the lines above as it is required by the web site generator 'Jekyll' -{:/comment} - - -## Nerve ## -This program builds the Nerve of a point cloud sampled on an OFF file. -The cover C comes from the preimages of intervals covering a coordinate function, -which are then refined into their connected components using the triangulation of the .OFF file. - -The program also writes a file SC.txt. -The first three lines in this file are the location of the input point cloud and the function used to compute the cover. -The fourth line contains the number of vertices nv and edges ne of the Nerve. The next nv lines represent the vertices. -Each line contains the vertex ID, the number of data points it contains, and their average color function value. -Finally, the next ne lines represent the edges, characterized by the ID of their vertices. - -**Usage** - -`Nerve <OFF input file> coordinate resolution gain [-v]` - -where - -* `coordinate` is the coordinate function to cover -* `resolution` is the number of the intervals -* `gain` is the gain for each interval -* `-v` is optional, it activates verbose mode. - -**Example** - -`Nerve ../../data/points/human.off 2 10 0.3` - -* Builds the Nerve of a point cloud sampled on a 3D human shape (human.off). -The cover C comes from the preimages of intervals (10 intervals with gain 0.3) covering the height function (coordinate 2). - -`python KeplerMapperVisuFromTxtFile.py -f ../../data/points/human.off_sc.txt` - -* Constructs `human.off_sc.html` file. You can now use your favorite web browser to visualize it. - -## VoronoiGIC ## - -This util builds the Graph Induced Complex (GIC) of a point cloud. -It subsamples *N* points in the point cloud, which act as seeds of a geodesic Voronoï diagram. -Each cell of the diagram is then an element of C. - -The program also writes a file `*_sc.off`, that is an OFF file that can be visualized with GeomView. - -**Usage** - -`VoroniGIC <OFF input file> samples_number [-v]` - -where - -* `samples_number` is the number of samples to take from the point cloud -* `-v` is optional, it activates verbose mode. - -**Example** - -`VoroniGIC ../../data/points/human.off 700` - -* Builds the Voronoi Graph Induced Complex with 700 subsamples from `human.off` file. -`../../data/points/human_sc.off` can be visualized with GeomView. - |