# Data Mining Algorithms In R/Packages/optimsimplex/Get functions

## Description

The functions extract the content to various elements of a simplex object:

optimsimplex.getall Get all the coordinates and the function values of all the vertices.
optimsimplex.getallfv Get all the function values of all the vertices.
optimsimplex.getallx Get all the coordinates of all the vertices.
optimsimplex.getfv Get the function value at a given index.
optimsimplex.getn Get the dimension of the space of the simplex.
optimsimplex.getnbve Get the number of vertices of the simplex.
optimsimplex.getve Get the vertex at a given index in the current simplex.
optimsimplex.getx Get the coordinates of the vertex at a given index in the current simplex.

## Usage

   optimsimplex.getall(this = NULL)
optimsimplex.getallfv(this = NULL)
optimsimplex.getallx(this = NULL)
optimsimplex.getfv(this = NULL, ive = NULL)
optimsimplex.getn(this = NULL)
optimsimplex.getnbve(this = NULL)
optimsimplex.getve(this = NULL, ive = NULL)
optimsimplex.getx(this = NULL, ive = NULL)


## Arguments

 this A simplex object. ive Vertex index.

## Value

optimsimplex.getall Return a nbve x n+1 matrix, where n is the dimension of the space, nbve is the number of vertices and with the following content:

• simplex[k,1] is the function value of the vertex k, with k = 1 to nbve,
• simplex[k,2:(n+1)] is the coordinates of the vertex k, with k = 1 to nbve.

optimsimplex.getallfv Return a row vector of function values, which k^th element is the function value for the vertex k, with k = 1 to nbve.
optimsimplex.getallx Return a nbve x n matrix of vertice coordinates; any given vertex is expected to be stored at row k, with k = 1 to nbve.
optimsimplex.getfv Return a numeric scalar.
optimsimplex.getn Return a numeric scalar.
optimsimplex.getnbve Return a numeric scalar.
optimsimplex.getve Return a list with a ’type’ attribute set to ’T_VERTEX’ and with the following elements:

n The dimension of the space of the simplex.
x The coordinates of the vertex at index ive.
fv The value of the function at index ive.

optimsimplex.getx Return a row vector, representing the coordinates of the vertex at index ive.

## Authors

Author of Scilab optimsimplex module: Michael Baudin (INRIA - Digiteo)
Author of R adaptation: Sebastien Bihorel (sb.pmlab@gmail.com)