Functions
boolvec *	dem (const char dem_name="")

boolvec *	dem_add (REAL weight, const char dem_name="")

Detailed Description

Function Documentation

bool dem ( const char * dem_name = "*" )

Description:: Using this rule the resulting surface approximates DEM in least squares meaning.

Parameters

dem_name name of DEM dataset

Math:: This command adds the following functional to the functional sequence:
$\Phi(u_{1,1},\ldots,u_{N,M}) = \sum_{i,j} \left( u_{i,j} - z(x_i, y_j) \right)^2,$
where (i,j) - indices of the cells, - DEM value for the (i,j) cell.

Description:: This function modifies previous (modifiable) rule by adding the dem rule with some weight.

Parameters

weight	informational weight for this rule
dem_name	name of DEM dataset

Math:

This command modifies previous functional $\Phi_0$ by adding $\Phi_1$ :

$\Phi(u_{1,1},\ldots,u_{N,M}) = \Phi_0(u_{1,1},\ldots,u_{N,M}) + w\Phi_1(u_{1,1},\ldots,u_{N,M}),$

where

- informational weight,

$\Phi_1(u_{1,1},\ldots,u_{N,M}) = \sum_{i,j} \left( u_{i,j} - z(x_i, y_j) \right)^2,$

where (i,j) - indices of the cells, $z(x_i, y_j)$

- DEM value for the (i,j) cell.