This is the command nnalgNCARG that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
NAME
nnalg - a tool for displaying features of the Natgrid algorithm
SYNOPSIS
nnalg algorithmic_data_file
DESCRIPTION
"nnalg" takes a single argument which is a the name of a special file created by the
Fortran subroutine NATGRIDS or the C function c_natgrids in the Natgrid package. This file
contains data appropriate for displaying various features of the Natgrid algorithm. By
default, this file is not created. In order to create it, you need to set the parameter
adf in the Natgrid package. You can additionally override the default file name of
"nnalg.dat" by using the parameter alg.
To invoke "nnalg", simply type the command:
nnalg data_file
By editing the data file, you have many options as to what is displayed and what the
appearance of the plot looks like.
The features that can be displayed are:
1. The input data points
2. The natural neighbor circumcircles
3. The Delaunay triangulation, derived from the natural
neighbor circumcircles
4. The Voronoi polygons
5. The first order natural neighbors of a given
input point (or points)
6. The second order natural neighbors of a given input
point (or points)
The first four items in the above list are displayed in the default case.
USAGE
What gets displayed by nnalg depends on values in the input data file which can be changed
by manual editing.
Use nnalgNCARG online using onworks.net services
