kfast@poczta.onet.pl
2001-Aug-29 00:10 UTC
[R] (not necessarily R-related) help with data presentation
I have a question which is not necessarily related to R. I want to use a distorted political map of the world with certain countries increased in size according to a certain variable (an idea similar to the homunculi usually found in psychology textbooks) to demonstrate the coverage of particular countries in a news service. Does anyone have any idea of how to approach this? I don't think there is any software or anything that could do it, but I would be more than happy to hear a couple of ideas/intuitions as to how to tackle this. Kuba Fast -- OnetKomunikator - porozumiesz sie z innymi [ http://ok.onet.pl/instaluj.html ] -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
On Wed, 29 Aug 2001 kfast at poczta.onet.pl wrote:> I want to use a distorted political map of the world with certain > countries increased in size according to a certain variable (an idea > similar to the homunculi usually found in psychology textbooks) to > demonstrate the coverage of particular countries in a news service. > Does anyone have any idea of how to approach this? I don't think there > is any software or anything that could do it, but I would be more than > happy to hear a couple of ideas/intuitions as to how to tackle this. >Your are looking for cartograms, see for example: http://www.geog.qmw.ac.uk/hgis/conference/cartogram.html and look for work by Danny Dorling. Another site is: http://www-viz.tamu.edu/faculty/house/cartograms/index.html. Dorling cartograms are mostly bubbles, Kocmoud/House deformed polygons. There is a Java applet at: http://www.geog.leeds.ac.uk/pgrads/j.macgill/java/Cartogram.html, and the details are in: Dorling, Daniel (1996): Area Cartograms: Their Use and Creation, Concepts and Techniques in Modern Geography (CATMOG), 59. The complicated issue is to jitter the centres of the circular symbols so that they are close to the point representing the original object location, their area is proportional to the chosen weighting variable (here coverage in the news service), they do not overlap; they are then filled to represent the variable being visualized. Roger -- Roger Bivand Economic Geography Section, Department of Economics, Norwegian School of Economics and Business Administration, Breiviksveien 40, N-5045 Bergen, Norway. voice: +47 55 95 93 55; fax +47 55 95 93 93 e-mail: Roger.Bivand at nhh.no and: Department of Geography and Regional Development, University of Gdansk, al. Mar. J. Pilsudskiego 46, PL-81 378 Gdynia, Poland. -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
kfast@poczta.onet.pl
2001-Aug-29 15:56 UTC
[R] (not necessarily R-related) help with data presentation
Thanks a million for everyone's help. However, in technical terms my problem is still not solved. Is there any freely available software which allows one to draw cartograms? If not, is there any free software for which you imagine it would be easy to add an extension to do that? Or maybe someone would be willing to feed my data into a program they have and make one for me -- it's really simple, and I just need one, the data is basically some 100 or so countries with values ranging from 0 to ~ 300. I would be extremely grateful for further suggestions/help. Jakub Fast -- OnetKomunikator - porozumiesz sie z innymi [ http://ok.onet.pl/instaluj.html ] -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._