Map advice

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  • Csaba Gabor

    Map advice

    Where do I get the appropriate data to draw a good
    political map of the world and each continent?

    This may seem somewhat off topic (at first), but these two
    groups are heavily user presentation oriented, so please bear
    with my oblique query... I have a potential project coming
    up, with an initial meeting in a few days. The basic project is
    to have a world map, click over any continent any you get
    an image map for that continent. Now move the mouse over
    any country and you get some stats for that country (or click to
    get the stats) like the number of widgets the country produces
    and the average shoe size of its citizens.

    Every part of this is straightforward for me except the image
    maps. My problem is getting the maps. These are really barebones
    maps we're talking about (no cities or roads needed, not even
    country names), but they should look nice and precise. Of
    course any existing maps are already copyrighted my potential
    clients will want ownership of the maps. So where do I look
    for a simple but good quality political map for the web?

    FURTHERMORE, country colors should somehow reflect on
    the number of widgets produced. Occasionally (infrequently)
    the widget counts will change and they'll have an entry method
    for that, but now the country colors should change (on an
    automated basis). To me this means that what I'm really after
    is some specification for the coordinates of the outlines of countries,
    and on the server side I'll have to create new maps whenever
    widget counts are changed. So, though this part is well out
    of newsgroup scope, I'll get PHP to do that (which I don't
    have a problem with). The point is that the maps will be
    static but need to be regenerated occasionally for coloration.

    So, my real question is: Where do I get the appropriate data
    to draw a good political map of the world and each continent?

    I've searched the web and probably don't know the right
    words (map server is not what I'm really looking for, I think,
    since I'll only be serving static pages). Also, I'm open to
    other architectural comments on this possible project.

    Thanks,
    Csaba Gabor


  • brucie

    #2
    Re: Map advice

    in post: <news:408722f3@ andromeda.datan et.hu>
    "Csaba Gabor" <news@CsabaGabo r.com> said:
    [color=blue]
    > Where do I get the appropriate data to draw a good political map of
    > the world and each continent?[/color]

    whenever i've noticed attribute lines for stuff like that it always
    seems to be the cia world fact book.



    --
    b r u c i e


    Comment

    • Dave Patton

      #3
      Re: Map advice

      "Csaba Gabor" <news@CsabaGabo r.com> wrote in
      news:408722f3@a ndromeda.datane t.hu:
      [color=blue]
      > Where do I get the appropriate data to draw a good
      > political map of the world and each continent?[/color]

      Do you mean like the maps on the Degree Confluence Website?

      I'm not the one that does the maps, but all the data came
      from public sources. Ont he other hand, there are many more
      man-hours involved in locating the data, massaging it, and
      producing the maps, than can possibly be done in "a few days".

      --
      Dave Patton
      Canadian Coordinator, Degree Confluence Project

      My website: http://members.shaw.ca/davepatton/

      Comment

      • Csaba Gabor

        #4
        Re: Map advice

        "Dave Patton" <none@none.co m> wrote in message
        news:Xns94D2E17 B86AFmrzaphoddi rectcaold@24.71 .223.159...[color=blue]
        > "Csaba Gabor" <news@CsabaGabo r.com> wrote in
        > news:408722f3@a ndromeda.datane t.hu:
        >[color=green]
        > > Where do I get the appropriate data to draw a good
        > > political map of the world and each continent?[/color]
        >
        > Do you mean like the maps on the Degree Confluence Website?
        > http://www.confluence.org/country.php?id=29
        > I'm not the one that does the maps, but all the data came
        > from public sources. Ont he other hand, there are many more
        > man-hours involved in locating the data, massaging it, and
        > producing the maps, than can possibly be done in "a few days".
        >[/color]

        That is a cool site/idea. Those maps are approximately like
        what I'd like. For example, I'd like the US map at about 2.5
        times the size with state borders (more specifically, I'm after
        the polygons that determine those borders). Or a Europe map
        that is, again, 2.5 times the size of the US one with borders like
        that of the map for Hungary that came up from your link (so of
        course the scale would be slightly smaller than what came up for
        me).

        Yes, I agree that the map data can be had publicly (for example,
        a starting point might be htpp://www.maproom.psu .edu/dcw),
        but my problem is figuring out what, EXECTLY, to download
        and then to understand what I've got (Ie. Is an ARC shapefile
        what I want? and how do I work with it?). As far as I understand,
        what I'm looking for is a list like:
        Chad: PointC1, PointC2, ..., PointCn
        Niger: PointN1, PointN2, ..., PointNm
        and so on.

        Oh, yes, I agree about the time. This upcoming meeting is for
        discussing the POTENTIAL project. It will only be due at
        the end of May, which I think gives me enough time.


        Comment

        • Csaba Gabor

          #5
          Re: Map advice

          "brucie" <shit@bruciesus enetshit.info> wrote in message
          news:c67ari$8m4 cp$1@ID-117621.news.uni-berlin.de...[color=blue]
          > in post: <news:408722f3@ andromeda.datan et.hu>
          > "Csaba Gabor" <news@CsabaGabo r.com> said:
          >[color=green]
          > > Where do I get the appropriate data to draw a good political map of
          > > the world and each continent?[/color]
          >
          > whenever i've noticed attribute lines for stuff like that it always
          > seems to be the cia world fact book.
          > http://www.cia.gov/cia/publications/factbook/
          >
          >
          > --
          > b r u c i e
          >[/color]

          Thanks Brucie, good tip. They have good maps (for what I want to do)
          freely available, but not the underlying data for me to regenerate the maps.
          As of right now, what I'm planning is getting one of those maps,
          writing a little progam to record where I click, and then I can trace
          out all the countries. Then dump those polygon points to a database
          and let PHP craft the resultant map. Still, it seems like this is something
          that should be standardly available and not something I should be doing.
          Plus, my tracing would not be nearly so fine grained as the underlying maps.

          (As a side note: I wonder if this technique doesn't allow me to use pretty
          much any map because what I create is my own, since I'm drawing it myself.
          Ie. as I understand it, it's not the data that is copyrighted, but the
          presentation.
          An interesting copyright issue)

          Csaba


          Comment

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