ZIPScribble Map Italy

Earlier I’ve blogged a two-parts tutorial on how to create ZIPScribble Maps using the Processing visualization framework.

The map uses a background I made with TileMill and CC-BY-licensed postcode data from the Geonames gazetteer portal. (By the way, here’s an informative short TileMill tutorial by Pierre La Baume)

As explained earlier, there are different levels in my ZIPScribble Maps:

  • Level 1 ZIPScribble Map: Only the first digit of the postcode is compared. Thus, a discontinuity is detected, for example, between postal codes 8679 and 9000, but no discontinuity is detected between 8399 and 8400.
  • Level 2 ZIPScribble Map: The first two digits are compared. Thus, a discontinuity is detected between postal codes 8679 and 9000 as well as between 8399 and 8400.
  • The Level 3 ZIPScribble Map works analogously.

ZIPScribble Map Italy Level 1

ZIPScribble Map Italy Level 2

ZIPScribble Map Italy Level 3

What I find interesting, comparing the ZIPScribble Maps of Italy to those of Switzerland, is that in the Italian maps the difference between levels 2 and 3 is not very big. In Switzerland level 3 is much more fragmented than level 2. In Italy, level 3 seems to distinguish big cities from their surroundings.

Consider, for example, Genova on the coast of the Mediterranean sea in the top-left/north-west corner of the ZIPScribble Map. At level 3, Genova (coloured bright green) stands separate from the surrounding towns (purple/fuchsia). Similarly, the cities of Milano, Parma, Modena, Bologna, Florence, Perugia, Rome, Napoly and Palermo stand out at level 3.

Finally, in celebration of the recent political events in Italy I had fun producing these maps (exact colours courtesy Wikimedia):

ZIPScribble Map Italy Level 1, alla Italiana

ZIPScribble Map Italy Level 2, alla Italiana

ZIPScribble Map Italy Level 3, alla Italiana

Ralph Straumann

Ralph is a world-citizen, a geoinformation specialist by profession, and interested in many topics. Here, he'll confine himself mostly to things geo-visual.

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4 Responses

  1. 22 November 2011

    […] visurus everything visual, geo, and … Skip to content HomeAboutContact ← ZIPScribble Map Italy […]

  2. 22 November 2011

    […] but notice what a special topological structure german postcode regions have. Neither France, nor Italy nor Switzerland have a level 1 postcode region which is topologically connected to almost all […]

  3. 27 January 2012

    […] have made various ZIPScribble Maps – Switzerland, Germany, France, Italy – as well as a two-part tutorial on how to produce them using Geonames data, TileMill basemaps […]

  4. 6 February 2012

    […] or use as basemap in a Processing sketch. The latter of which I have in my ZIPScribble maps series (here, here or here; some background on using TileMill with Processing can be found here and […]

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