Integrated Map Tool Overview, Current Status, and Things to Come
Integrated Mapping and Analysis Tool (IMAT) map widget Integrated Mapping Tool IMAT Reusable components for portrayal, query, analysis, and exchange Analytical capabilities provided through application proxy services Scalable and extensible, but not a full-featured web-based GIS Fast Lightweight (small footprint on server) with browser-based clients Modular, reusable components, designed for service-oriented architecture (SOA) Built on interoperability standards Leverages development funding from DHS, FGDC, and IR&D. ~$50k in WRAP-centric development funds from CAP grant alone
Integrated Mapping and Analysis Tool (IMAT) Service interfaces based on Open Geospatial Consortium (OGC) specifications: WMS = Web Mapping Service WFS = Web Feature Service WCS = Web Coverage Service WPS = Web Processing Service CSW = Catalog Service for the Web Map Viewer WFS Proxy Internet Query Tool Application Services Container WMS Proxy Application Tier Web Browser AJAX Container Analysis Tool WCS Proxy Data Tier XML HTTP JSON HTTP Data Exch. Tool WPS Proxy CSW Proxy Internet or LAN Features are simple like points, lines, and polygons. Coverages are rasters, lattices, or TIN surfaces Projection & analysis will be WPS s WFS NSDI Web Services WMS CSW WMS WRAP Web Services WPS WFS CSW WCS
IMAT Functionality - Existing
IMAT Current Work aka Cycle 1 Interactive Scaling and other client-side controls (operated by users) collaborative task by ENVIRON and Image Matters provides capability to shade features (e.g., county polygons or model output grid cells) for local-scale area based on values of a continuous variable allows changing colors and other symbology for layer features Metadata Catalog Implement Catalog Service for the Web (CSW) Storage location for metadata from WRAP layers Provides connectivity to National Spatial Distribute Infrastructure (NSDI) distributed Clearinghouse network allows discovery of WRAP geodata from any of the 6 Clearinghouse Gateways Metadata management through CatMan tool Direct Access ( one-click-away ) to metadata from IMAT viewer
IMAT Planned Work and associated functionality Iterative process with 2- to 3-week cycles planned (currently in Cycle 1) -------- Cycle 2 -------- ------ Cycle 3 ------ Web Feature Service (WFS) provides access to WRAP vector data at the feature level. Makes data available for display, analysis, & export from TSS, and accessible to external systems as appropriate. Feature Selection Capability single or multiple mouse clicks Feature Selection Capability box, polygon, and circle/ellipse Feature Selection Capability on basis of attribute values (logical statement with boolean operators) Add layer button provides access to layers that are present in the metadata catalog (can be extended to layers from web services) Web Mapping Service (WMS) provides service to be ingested for display through IMAT, or through an external web mapping system. Create AOI layer button makes a temporary (cached) layer that serves as the user s Area-of-Interest for analysis and/or data export.
IMAT Planned Work and associated functionality ------- Cycle 4 ------- -------- Cycle 5 ------- Support for multiple projections reprojection capability allows display of layers whose native projection differs from the RPO Lambert or GCS (Long/Lat) implemented as Web Processing Service (WPS) Capability to perform summary statistics on set of vector features from layers (accessed locally or through WFS) for user-defined region (i.e., the AOI layer) Web Coverage Service (WCS) provides access to WRAP raster data at the cell or nodal level. Makes data available for display, analysis, & export. Allows access to external systems as appropriate. Style Layer Descriptor (SLD) provides access to WRAP data with symbology dictated by requesting client, either by IMAT, or through an external web mapping system. Extends current work. Summary statistics capability for raster layers for user-defined AOI.
IMAT Future Work & associated functionality Potential Post-October 2006 development: ------------------- Cycle 6 -------------------- Provision of CatMan and MetaMan tools as appropriate. Metaman provides metadata editing and validation capabilities. Design and Implement Registry (Catalog) for contextual geospatial data and other key WRAP layers available through web services. Identify key web services of interest (WMS, WFS, WCS) and populate the web service Registry with service info and capabilities. Data download capability site with ftp from HTTP transfer capability develop tools and web pages that utilize the AOI functionality and the indexed data. Potential output formats include shapefiles, SDTS format, GML, and ASCII. Metadata upload tools Data upload tool allow States and Tribes to upload data to TSS
Architecture Overview OGC Web Services WMS WFS CSW HTTP Java OGC Proxy Services (usersmarts owsremote) WMS-P WFS-P CSW-P JSON using DWR over HTTP Widget Tool Bar Javascript IMAT (Integrated Map Tool) Map Tag usersmarts Javascript Framework (aka TANDOM ) Canvas Scale Legend Geom. Rend. View Context Layer Bar Location Bar Third-Party Libraries (Mochikit, DWR)
Service Communications (Using WMS Example) WMS (3) WMS OWS Remote (2) (1) IMAT (1) 1) http://wmshost:port/wms?request=getmap&layers=1,2,3 2) WMSRemote.getFeatureInfo({request: GetFeatureInfo, layers: [ 1, 2, 3 ], wms: http://wmshost:port/wms }); 3) http://wmshost:port/wms?request=getfeatureinfo&layers=1,2,3
Current Capabilities Display a set of layers defined by an OGC ViewContext document where each layer can be hosted by a separate WMS than the rest Extendable Tool-based interaction Panning Zooming (in, out, to box) Geometric area selection (box, polygon, circle) with support for callbacks returning geometry Distance Measuring (with configurable UOM) Bookmarking (context save/restore) Feature description query support (using WMS GetFeatureInfo) Layer management controls using LayerBar Show/hide Activate/deactivate (for query) Shift up/down Multiple supported projections Cassini (standard latitude/longitude) Lambert Conformal Conic Real-time user location status in given projection using LocationBar Scale legend (with configurable UOM) Geometry Renderer API with default implementations for Firefox and Internet Explorer
Near-term Capabilities Layer property editor Allowing on-the-fly adjustments to certain layer properties Opacity Color scale min and max And many more (TBD) Inline with the layer information provided by the Layer Bar Shown/Hidden by clicking an Edit button Layer legend information Requires either turning on legend support in Arc or creating default icons (nonscaling layers) Scaling service will provide legend information for dynamically shaded layers
Near-term Capabilities, cont d Metadata Viewer Component integrated with the IMAT Allow for querying a CSW and displaying the resulting metadata hits Adding layers identified by CSW results to current map Supporting WFS endpoints for describe feature functionality Select by point or bounding region (box, polygon) External component for querying based on attribute values Area of Interest Layer Something else