Readme file
SERIES C
 Applied Statistics
A three-dimensional object point process for detection of cosmic filaments, by
R. S. Stoica et al., 56 (2007), 459–477
This file contains explanations concerning the data and the programs used to obtain the results presented in the paper.
The software and data files in this package are free for use and modification for public research and public academic activities only. This software is continously under development, and although we have done our best to ensure that the programs work correctly, we cannot guarantee that they are bug free. So the responsibility for the results and conclusions obtained by using this software falls to the user. For more information feel free to contact Radu Stoica at: radu.stoica@math.univ-lille1.fr .
The archive contains the following directories:
ASTRO3D/C++ : C++ source code of the programs.
ASTRO3D/DTA : data files used in the paper.
ASTRO3D/EXEC : contains the batch files that demonstrate how to run the programs
ASTRO3D/MATLAB : Matlab code for the presentation of the data
STRO3D/PARAMS : parameter files for the executable programs
1. DATA
The data files used can be found in the directory ASTRO3D/DTA. They contain the galaxy positions for the three bricks, selected as described in the paper. The header lines are explained by comments ('xdim', 'ydim', and 'zdim' give the size of the brick, and 'step' is the coordinate unit in Mpc/h). The galaxy positions are given in respect to the lower left-hand corner of the brick.
The numbers 150, 200, and 250 in the file names correspond to the parameter Dmax in Table 1 in the paper.
2. PROGRAMS
The program sources are in the directory ASTRO3D/C++. The programs that we have written to implement our model are built using the standard C++ object-oriented programming language. The programs are derived from MPPLIB, a C++ library developed at CWI (Amsterdam - The Netherlands) by A. Steenbeck, M.N.M. van Lieshout, R.S. Stoica, P. Gregori and K. Berthelsen. MPPLIB has been built to model and simulate marked point processes. MPPLIB and the associated documentation are available on demand; their description can be found at
http://www.cwi.nl/ftp/CWIreports/PNA/PNA-R0403.pdf.
We have written no extra documentation For the present programs. But the programs themselves are written in explicit style, giving clear names to the variables and including many comments. The user can compile the programs using the provided Makefile.
The directory ASTRO3D/EXEC contains the batch files showing how the C++ programs have to be used.
The directory ASTRO3D/PARAMS contains the parameter files needed by the programs, and referred to in the batch files of the EXEC directory.
The directory ASTRO3D/MATLAB contains some Matlab scripts that might be useful for plotting the data generated by the programs. The main scripts are draw_cylinder.m and draw_visit.m. The user has to check that the path to the data file is correct.
Vicent J. Martínez
Observatori Astronòmic de la Universitat de València
Edifici d'Instituts d'Investigació
Poligon La Coma
46980 Paterna
València
Spain
E-mail: martinez@uv.es
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