[Freegis-list] origin-destnation lines

[Arvind Kumar]

Dear Bernhard
Thanks for taking time to answer my question.

I have data on origin and destinations in tabular form from a Job to Work Survey, which shows how many trips are made to a particular travel zone from different zones (one to many relationship), and also how many trips originate from that particular zone to various other zones.

 I am interested in documenting these trips graphically, with lines (with attribute carrying info about number of trips). Since there is a large number of zones  involved in the operation, it will have to be automated. 

If you could let me know how a line can be generated between two points and scripts that may used to deal with larger number of points, I shall be grateful to you. I am not a regular user of GIS, and a self taught person I this area. 

I am prepared to use ArcGIS 8.1, Arcview 3.2, Mapinfo 6.5/ 7 or Autodesk MAP to accomplish this, thought arcGIS is the preferred software.

An example table is attached, I am not sure if it will go through the mail. Pl let me know if you cant read the table.


Origin zone id	Destination[PARA]zone id	Frequency (number of trips)
1	8	23
3	8	13
4	8	3
6	8	33
1	4	12
3	4	14


 








Best regards,
--Arvind





Arvind Kumar
PGRC FBE UNSW  Sydney.

 -----Original Message-----
From: 	freegis-list-bounces at intevation.de [mailto:freegis-list-bounces at intevation.de]  On Behalf Of Bernhard Reiter
Sent:	Friday, 18 February 2005 9:24 PM
To:	freegis-list at intevation.de
Subject:	Re: [Freegis-list] origin-destnation lines

 << File: ATT122841.dat >> << File: ATT122842.txt >> Am 18. Feb 2005 um 12:56:33 schrieb Arvind Kumar:
> A very basic question:
> Can someone tell me how can lines between origin destination points be generated automatically from teh data?

Hi Arvind,
can you rephrase this, 
because I think I do not understand the question well enough.

If you have two points and want to generate a line between them,
must software will just let you do this.
To automise this highly depends on the software you are using.
A lot of GIS software can be scripted or extended. 

	Bernhard

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