Proceedings, XXth congress: Proceedings, XXth congress

Altan, M. Orhan

Bibliographic data

Multivolume work

Persistent identifier:: 1663674213

Title:: Proceedings, XXth congress

Sub title:: Istanbul, 12 - 23 July 2004

Year of publication:: 2004

Place of publication:: Istanbul

Publisher of the original:: [Verlag nicht ermittelbar]

Identifier (digital):: 1663674213

Language:: English

Additional Notes:: Erscheinungsdatum des Originals ist aus dem Copyrightjahr ermittelt.; Auch bezeichnet als XXth International Congress for Photogrammetry and Remote Sensing

Editor:: Altan, M. Orhan

Corporations:: International Society for Photogrammetry and Remote Sensing, Congress, 20., 2004, Istanbul; International Society for Photogrammetry and Remote Sensing, Commission Primary Data Acquisition

Adapter:: International Society for Photogrammetry and Remote Sensing, Congress, 20., 2004, Istanbul; International Society for Photogrammetry and Remote Sensing, Commission Primary Data Acquisition

Founder of work:: International Society for Photogrammetry and Remote Sensing, Congress, 20., 2004, Istanbul; International Society for Photogrammetry and Remote Sensing, Commission Primary Data Acquisition

Other corporate:: International Society for Photogrammetry and Remote Sensing, Congress, 20., 2004, Istanbul; International Society for Photogrammetry and Remote Sensing, Commission Primary Data Acquisition

Document type:: Multivolume work

Volume

Persistent identifier:: 166368779X

Title:: Proceedings, XXth congress

Scope:: IV, 226 Seiten

Year of publication:: 2004

Place of publication:: Istanbul

Publisher of the original:: [Verlag nicht ermittelbar]

Identifier (digital):: 166368779X

Illustration:: Illustrationen, Diagramme

Signature of the source:: ZS 312(35,B8)

Language:: English

Additional Notes:: Erscheinungsdatum des Originals ist aus dem Copyrightjahr ermittelt.

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Editor:: Altan, M. Orhan

Corporations:: International Society for Photogrammetry and Remote Sensing, Congress, 20., 2004, Istanbul; International Society for Photogrammetry and Remote Sensing

Adapter:: International Society for Photogrammetry and Remote Sensing, Congress, 20., 2004, Istanbul; International Society for Photogrammetry and Remote Sensing

Founder of work:: International Society for Photogrammetry and Remote Sensing, Congress, 20., 2004, Istanbul; International Society for Photogrammetry and Remote Sensing

Other corporate:: International Society for Photogrammetry and Remote Sensing, Congress, 20., 2004, Istanbul; International Society for Photogrammetry and Remote Sensing

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2019

Document type:: Volume

Collection:: Earth sciences

Chapter

Title:: DEVELOPING A WEB-BASED GIS APPLICATION FOR EARTHQUAKE INFORMATION A. Garagon Dogru, T. Selcuk, H. Ozener, O. Gurkan, G. Toz

Document type:: Multivolume work

Structure type:: Chapter

Ja IE a — 4 Mai UM International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B-YF. Istanbul 2004 2.3 Application Development In this study a GIS application was developed and a web site was configured to serve the earthquake information on the Internet. MapObjects activex component was added to a form in Visual Basic project file and used to develop the application (Figure 5). WebLink.ocx is also an activex control. This control is installed automatically with MOIMS. Its role is to listen on an assigned port for requests from a client and communicate with the esrimap.dll. Esrimap.dll is a dynamic link library component that extends web server software. It can manage requests and responses from map server and administer map services (ESRI, 1998). Following functions can be implemented in programs built with Map Objects control: e Display a map with multiple map layers, such as roads, streams and boundaries. e Pan and zoom throughout a map. e Draw graphic features such as points, lines, ellipses, rectangles and polygons. e. Draw descriptive text. e Identify features on a map by pointing at them. e Select features along lines and inside boxes, areas, polygons, and circles. e Select features within a specified distance of other features and more...(ESRI, 1999). AU EN TNT CE onec gm pre 2 Ele. EO View Project Format Debug Bun Query Disgram Took Add-Ins Wndow [ep : Ix NEEBR ADE 00 | Controls | Designers | Insertable Objects | > DHTML Edit Control for ES Diff get Actives! Control modus DirectAnisation-Libesry Browse. T^ Selected Items Cely Map Control 4 : > » ESAT MapObjects 2.0 : Location: - Ci APRO,.YCOMMON FILESIESRIUMOZO. QC ge |. um | |ui s nono Y Mebk — Figure 5: Visual Basic project with components The map control is the main object of the MapObjects. The map control is a container for the maps. Maps are displayed on this container. MapObjects ActiveX control has lots of properties, events and controls. Main properties are CoordinateSystem, Extent, FullExtent, MousePointer and Visible. Main methods are DrawShape, ExportMap, Pan, Refresh and TrackRectangle. Main events are AfterLayerDraw, | BeforeLayerDraw, MouseDown and MouseMove. Before adding any vector layer a data connection must be established. A data connection represents a connection to a source of geographic data. In this study a folder containing shapefiles is the data source. A connection can return a GeoDataSets collection. Each member of the collection, referred to as GeoDataset, represents a discrete set of geographic data that can be retrieved from the data source. Geographic data in a GeoDataset is used by assigning it to the GeoDataset property of a new | MapLayer object. The Connect method of the DataConnection object will attempt to connect to the data source specified in the Database property. Following is the codes for adding layers to the application: 147 add shapefiles Dim dc As New DataConnection Dim Lyr As MapObjects2. MapLayer dc.Database — ImsDataPath If Not dc.Connect Then MsgBox "ims data set not found" End End If Set Lyr = New MapLayer Set Lyr.GeoDataset = de. FindGeoDataset("Seismic") Lyr.Symbol.SymbolType = moPointSymbol Lyr.Symbol.Style = moSquare Marker Lyr.SymbolColor = moRed Lyr.Symbol.Size = 9 Lyr. Visible = False Map. Layers. Add Lyr 2.4 Serving on the Internet GIS application runs together with MapObjects Internet Map Server components. MapObjects Internet Map Server acts as a gateway between Web Server and the mapping application. The request made by the client is passed to the web server first. The server recognizes that this request is about creating a map, so it directs it to the map server. The map server executes the application according to the type of mapping demand (this demand can be a display operation like a zoom-in function or a query about a feature) and sends the result (a picture of the map in JPEG format) to the web server. The web server brings the HTML page created to the client. MapObjects IMS has three different components that runs one after the other. IMS Catalog, IMS Launch, and IMS Admin are connected to each other. IMS Admin communicates with IMS Catalog to manage the state, running or not, of a map service. IMS Catalog communicates with IMS Launch. When starting a map service, IMS Catalog sends the path and file name of the map service to be started and the number of instances to start. IMS Launch responds by starting the map service. | *' Geodesy V 20 Server Hane [G aragor c [G4RAGON] Server Daer [7 Duy t | jas = ter Seivec Web Path [inetoubiwen Bh fen fee Tok Bas Mirror mt Dean d] Figure 6: Server side of the application When a client sends a URL request to the server that hosts esrimap.dll, it determines which map service to communicate to respond the request. The URL address : http://ServerName/ scripts/esrimap.dll?Name-MapServiceName&Cmd-Map. Each argument and value pair is referred to a query parameter. The

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