Mike,

It’s nice – a brief description of just what the calculations are would be helpful as well. I am guessing that intersection ‘nodes’ are connected directly to all other nodes on both axial lines. Is that correct? Also a way to get the numbers out would be useful – or perhaps I am missing a trick.

Alan

Folks

When you open the software on a 19 inch screen set at 1280 x 768 you should get something like the attached screen shots of regent street. You can start drawing in the map window straight away - - I also attach a screen shot of adding in a new map - leicester square with some axial lines drawn on it.

Maybe I should have done a manual for this - next release should have manula and God willing scrolling

Mike

At 10:46 28/05/2005, Michael Batty wrote:

No you cant scroll the screen yet - that is what you need to make sure that the pixel map fits your screen - basically you can load a pixel map which is not muchbigger than than the one that you have within the package - for ascreen of around 1280 x 768 but if you are on a smaller screen then there are problems - for now keep the maps small

in the next release I will sort out scrolling, I hope

Mike

At 11:36 27/05/2005, Tony Donegan wrote:

This looks great. However when I open the file and get the initial map screen, I am unable to scroll across to the information on the RHS (as though my screen was too small). Perhaps I am missing something - can anyone help.

Tony

Dr HA Donegan
Reader (Mathematics Division)
School of Computing and Mathematics
University of Ulster
Jordanstown
BT37 0QB

Tel: 028 90 366589 or 90 366841

----- Original Message -----

From: Michael Batty

To: [log in to unmask]

Sent: Thursday, May 26, 2005 5:23 PM

Subject: AJAX: Software for Generalised Space Syntax

Here is a Windows-based program which we have built in CASA to do space syntax. It not only computes accessibility or integration scores on the traditional axial line map - the primal problem - but also does the same for the intersections or junctions between the axial lines – the dual problem.

The program is free and therefore not supported. It will continue to be free as future versions are developed. As yet there is no help and no manual but it is pretty easy to it figure out. I have not tried it on serious large scale problems but it is likely to work for most. As yet, there are many additional things that could make it even more user friendly. You can load you own map although the one provided is for Regent Street area in central London. You just start by drawing lines in the map window and then you go from there.

The size of the map used is important. You must know your screen size to be able to use it properly, and my advice would be that for small screens you should not handle maps which are greater than about 400 x 400 pixels. The program indicates this. In terms of the number of axial lines and junctions it will handle then this is up to 500.

If you have any difficulty unpacking this zip file – the program is only about 360K – then you can go to the web site.

http://www.casa.ucl.ac.uk/ajax/

and download it from there where future versions will be released. I will email the Mail Base List when we do new versions.

I cannot promise that it doesn't have bugs so Caveat Emptor!

I will talk about the program and the logics behind it at my invited speech at the forthcoming Space Syntax Symposium in Delft

( http://www.spacesyntax.tudelft.nl/)

and also in Pisa next week at Silvana Lombardo’s conference ( http://www2.ing.unipi.it/kpisa/) .

Mike Batty

_____________________________________________________________

Michael Batty, Director, Centre for Advanced Spatial Analysis (CASA) at

University College London, 1-19 Torrington Place, London, WC1E 6BT UK

_____________________________________________________________

tel 44 (0) 207 679 1781 fax 44 (0) 207 813 2843 mobile 44 (0) 7768 423 656

Personal web page is at http://www.casa.ucl.ac.uk/people/MikesPage.htm

CUPUM 05 Conference from June 29-July 1 CASA in UCL www.cupum.org

_____________________________________________________________

Michael Batty, Director, Centre for Advanced Spatial Analysis (CASA) at
University College London, 1-19 Torrington Place, London, WC1E 6BT UK
_____________________________________________________________

tel 44 (0) 207 679 1781 fax 44 (0) 207 813 2843 mobile 44 (0) 7768 423 656
Personal web page is at http://www.casa.ucl.ac.uk/people/MikesPage.htm

CUPUM 05 Conference from June 29-July 1 CASA in UCL www.cupum.org