Venice is a walking city, except for the extreme NW corner. This series of maps shows our progress to visiting every part of the city. All of the maps show the same area at the same scale.
This is the Open Street Map data, which has forced me to consider various display issues that are not present in other areas:
- Many of the streets have a different category (very narrow)
- Water characterization, in this case lines in the center of the waterway (TIGER has some of the same issues)
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| Open Street Map data symbolized in MICRODEM |
A heat map shows the number of points in the data base at that location, and where there is a lot of action. This shows GPS locations, and where we walk a lot. Color show how much time we spent at various places. Blue is few, red is many.
Red colors indicate:
- Rialto Bridge
- Fish and vegetable market
- Museums
- Restaurants
Over time the main roads and our favorite locations become clearer.
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| 16 November GPS in Venice faces challenges, more that in other cities which have urban canyons. In Venice they are slot canyons, 1-2 m wide with sheer walls three stories high. Then the "street" goes into a passageway way though a building, and instead of multipath reception leading to erroneous locations, there is no GPS signal. |
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| 29 November Where walking, the GPS points form a continuous line at the scale selected. When riding the vaporetto or a bus, train, or car, the track shows discontinuous points. |
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| 15 December |
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