3 research outputs found

    Architecture of Mobile Web Application for Generating Dynamic Route Map

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    Integrated Light Rail Transit (LRT) System in the capital of Malaysia connects some key districts where historical places, interesting places, business areas and shopping malls are concentrated. The train services are running independently but have points where they have interchanges. This may leads the traveler facing difficulty when they are choosing incorrect destination station especially on different LRT lines which contribute to time consuming and high costing. Thus, we present an architecture in developing mobile application that runs on a Personal Digital Assistant (PDA) to provide the solution for traveler to reach the desired destination. It is use to dynamically generate dynamic route map by determining the nearest station according to the specific places. The architecture, web components and its implementation are proposed and discussed in this paper

    Mobile map client API : design and implementation for Android

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    The fast development of computational power of the mobile phone makes it a suitable platform for running map applications. Both public and field working professionals can benefit from easy access to a mobile map client application with features such as route planning, location based services and simple GIS operations. This master's thesis describes the mobile operating system (OS) Android from a geographic information aspect and relates it to other major mobile OS. Available map client application programming interfaces (API) are investigated. It is concluded that Android is a good platform choice for implementing mobile map applications. But there is need of a generic open source API for Android. Such an API is implemented, resulting in a good performing map client. Though it needs additional development to perform all features aimed for in the suggested API design.PopulÀrvetenskaplig sammanfattning: Dagens datorlika mobiltelefoner lÀmpar sig utmÀrkt för att visa olika typer av kartor. Det Àr inte svÄrt att hitta tillÀmpningar för bÄde privatpersoner och professionella anvÀndare med behov som att till exempel hitta lÀmpliga fÀrdvÀgar eller visa information om platsen man befinner sig pÄ. Det hÀr examensarbetet gÄr ut pÄ att undersöka hur geografisk data kan behandlas och visas som kartor pÄ Android-mobiler. MÄlet Àr att skapa ett generellt programmeringsverktyg som ska kunna anvÀndas för att snabbt och enkelt kunna utveckla specialiserade kartapplikationer för Android. Ett sÄdant verktyg kallas inom databranschen för API, vilket stÄr för Application Programming Interface. Ett API Àr ett grÀnssnitt som ger programmerare smidig tillgÄng till grundlÀggande funktioner i ett system eller en typ av applikation. I det hÀr fallet fÄr programmeraren tillgÄng till grundlÀggande kartfunktioner, som t.ex. kartdataladdning eller panorering och zoom, utan att behöva programmera hela logiken bakom dessa funktioner. IstÀllet kan programmeraren fokusera sitt arbete pÄ de delarna som gör just den kartapplikationen unik. Arbetet Àr uppdelat i en undersökande del för att klarlÀgga var utvecklingen av tekniken befinner sig idag och vilka liknande försök som gjorts tidigare och en mer praktisk utvecklingsdel med mÄlet att implementera ett API för kartapplikationer pÄ Android. I undersökningen jÀmförs Android med andra mobila plattformar, t.ex. Apples iPhone och Nokias Symbian. Det konstateras att Android stÄr sig bra i konkurens med de andra och lÀmpar sig vÀl för kartapplikationer men att det skulle behövas ett generellt kartverktyg som inte Àr sÄ hÄrt styrt som Google maps, som Àr det vanligaste kartverktyget för Android. För att tydliggöra vad API:et borde innehÄlla och klara av att utföra gjordes först en teoretisk modell av dess olika delar. De viktigaste delarna, t.ex. dataladdning och anvÀndargrÀnssnitt med kartbildsvisning, panorering och zoom, implementerades sedan för att kunna testköras och vidareutvecklas pÄ en Android-mobil. En demoapplikation utvecklades för att demonstrera anvÀndningen av API:et. Resultatet Àr ett verktyg för ett energibolags servicepersonal att ha med sig i fÀlt för att se deras fjÀrrvÀrmenÀts geografiska utstrÀckning och info om nÀtets olika delar, kopplingar och kunder.Scientific summary: The fast development of computational power of the mobile phone have made it a suitable platform for running map applications. Both public and field working professionals can benefit from easy access to a mobile map client application with features such as route planning, location based services and simple GIS operations. This master's thesis describes the mobile operating system (OS) Android from a geographic information aspect and relates it to other major mobile OS. A map client application programming interfaces (API) is implemented, resulting in a good performing map client. Though it needs additional development to perform all features aimed for in the suggested API design. The study is divided into a state-of-the-art investigation of available technology, and an effort to design and implement a map client API for Android. The investigation was made by referencing available scientific papers, technical articles and websites. Available OS's and API's are investigated. It is concluded that Android is a good platform choice for implementing mobile map applications. But there is need of a generic open source API for Android. Another objective of the study was to compare a map client running as a web application to the native client developed regarding performance. Unfortunately no suiting API for setting up the web application was found. Since then the OpenLayers community have made a great effort for running OpenLayers clients on mobile devices, which would have been an ideal choice for doing the comparison. The work on the API contains a theoretical model which is partly implemented. The aim of the model is to define the overall functionality, some specialized features and cohesive data structures. Then the base functionality, such as data loading, map drawing, panning and zooming, was implemented. The implementation was carried out in an iterative manner. Starting with complementing a basic, incomplete open source map API to gain understanding of mobile map API design and avoid re-inventing the wheel. Added was support for coordinate systems and projections other than WGS 84 Web Mercator (EPSG 4326), better Web Map Service (WMS) support, vector data loading and improved responsiveness when loading data. A demo application was put together in order to test performance on the hardware emulator integrated in the Android SDK and on a real device, Motorola Milestone running Android version 2.1. The scenario for the demo application is a district heating pipe system, an useful field application for a city energy company. The application shows a raster background map loaded from a tiled WMS with the pipe system as vector overlays loaded from a custom Keyhole Markup Language (KML) service. The vector data is click-able in order to show information about different parts of the pipe system
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