links for 2011-02-17

  • rackview is a tool for visualizing the layout of rack-mounted equipment. It can load data either from database tables or from a flatfile
  • mplementing a MapType to act as a base map type can be a time-consuming and laborious task. The API provides a special class that implements the MapType interface for the most common map types: map types that consist of tiles made up of single image files.
    This class, the ImageMapType class, is constructed using an ImageMapTypeOptions object specification defining the following required properties:
    tileSize (required) specifies the size of the tile (of type google.maps.Size). Sizes must be rectangular though they need not be square.
    getTileUrl (required) specifies the function, usually provided as an inline function literal, to handle selection of the proper image tile based on supplied world coordinates and zoom level.
    The following code implements a basic ImageMapType using Google's traffic tiles. Note that the map type is inserted into the map's overlayMapTypes array:
  • Sensorly gives you free access to 100% community-powered hyper-local coverage maps. Our crowd of mappers is collecting data around the clock using regular phones and producing a true picture of carriers' current coverage.
    With hourly updates for 75 carriers in 17 countries, Sensorly helps you find the right carrier for you.
  • openBmap is a free and open map of wireless communicating objects (e.g. cellular antenna, Wi-Fi, Bluetooth). It provides tools to mutualize data, create and access this map.

    Help us build a free database ! Open source logging applications are available for Android2 phones, WindowsPhone6 and the openmoko freerunner freesmartphone.org phones.

  • Coverage Mapper is a crowd sourced cellular coverage mapper. The Coverage Mapper application runs on your mobile device (currently only available for Android), collects signal strength data, tied to your location, and submits it to our server. With the data from many people, accurate coverage maps are generated, to give you a better idea of the coverage in areas you care about.
  • But what is a CellID?: a CellID is the unique number of a GSM cell for a given operator. Your phone is always connected to a Cell, and by nowing this number, you know the Cell, and by knowing the position of the cell, you know where you are. There is some accuracy issue, as the cell can cover from several hundreds of meters to several kilometers, but this could be a very good starting point to locate yourself.

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