|
|
| GeoCommunity Mailing List |
| |
| Mailing List Archives |
| Subject: | [gislist] Thank You, was Distorted Maps |
| Date: |
01/05/2006 01:10:02 PM |
| From: |
DickBoyd .. aol.com |
|
|
In a message dated 1/5/2006 4:55:48 AM Pacific Standard Time,
jon.mitchell@uk.bureauveritas.com writes:
Hi Dick,
I do know of one such map but do not have the reference to hand. There has
been a map produced for New Zealand where the whole country has been 'rubber
sheeted' and contracted to show average travel times between towns. I believe
this has been produced for both business location and general travel planning.
Let me know if you're interested in the reference and I can chase people
(although to be honest they probably would all go to Google): sorry for lack of info.
but such a map has been produced utilising time rather than distance.
Jon Mitchell
Hi Jon,
Thank you for the reference. I Googled New Zealand for maps of average travel
times. the first search produced this:
http://www.fourcorners.co.nz/index.cfm/maps for planning trips in New Zealand. This is interactive. Enter an origin
and destination and the site returns distance and time. Select driving or
flying. The maps are scaled to distance, not time.
http://www.gis.psu.edu/projection/chapter5.html has a discussion of linear
cartograms, but no illustrations. The discussion is more about using different
projections to display items of interest. There are references to a cartogram
of the London Subway scaled to time, but no examples.
I've seen some maps that show the "gravity" influence of trade between
cities. Links are depicted a being proportional to the product of population and
inversely proportional to distance. In the display, New York and Los Angeles,
though widely separated have more influence on each other than Los Angeles and
San Francisco or New York and Washington. Interesting theory. The graphic really
highlights it.
Possibly some advertisers have adopted this gravity model for market
expansion.
I'll go back to the Google search later and let you know what I find.
This excerpt from a paper by DANIEL SUI is typical of the results of a Google
search for linear cartograms.
http://www.geoplace.com/uploads/FeatureArticle/0512gis.asp
"Cartograms as Necessity
In his presidential address to the Royal Geographical Society in 1962, Sir
Dudley Stamp remarked that "the fundamental tool for geographical analysis is
undoubtedly the map or, perhaps more correctly, the cartogram." Echoing Stamp's
remarks 30 years later, Danny Dorling (1994) further argued that "cartograms
should not be seen as just another option in a cartographic toolbox, but as a
fundamental necessity in the just mapping of spatial social structures."
Mr. Sui ends by asking if now is the time for GIS users to take cartograms
more seriously.
Thanks again,
Dick Boyd
_______________________________________________
gislist mailing list
gislist@lists.geocomm.com
http://lists.geocomm.com/mailman/listinfo/gislist
_________________________________
This list is brought to you by
The GeoCommunity
http://www.geocomm.com/
|
|
Sponsored by:
For information
regarding
advertising rates
Click Here!
|
