© Crown copyright Met Office Introduction to IDV PRECIS Reading Workshop, 24 - 28 August 2009.
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Transcript of © Crown copyright Met Office Introduction to IDV PRECIS Reading Workshop, 24 - 28 August 2009.
© Crown copyright Met Office
Introduction to IDV
PRECIS Reading Workshop, 24 - 28 August 2009
© Crown copyright 2007
Overview
Integrated Data Viewer (IDV) Overview
IDV features• Supported data formats• Web enabled features
IDV as an Integrator
PRECIS demo with IDV
© Crown copyright 2007
What is the IDV?
• Unidata’s newest scientific analysis and visualization tool
• Freely available Java™ framework and reference application
• Provides 2- and 3-D displays of geoscientific data
• Stand-alone or networked application
• Built on VisAD library
© Crown copyright 2007
VisAD’s Data Model
• Designed to support virtually any numerical
data
• Metadata can be integrated into each data
object
• Supports mathematical operations as well as
evaluation and resampling of data
• Supports spatial and temporal co-location of
data
• Supports data sharing among different users,
different data sources and different scientific
disciplines
• May be used independently of the VisAD
display model
Gully erosion/deposition Gully erosion/deposition from VisAD-based from VisAD-based
DEMViewerDEMViewer
© Crown copyright 2007
Supported Data Formats
Scientific• Georeferenced netCDF data• Vis5D data• McIDAS/ADDE (satellite, radar, surface
and upper air)• Archive Level II radar
Social• ESRI shapefiles (e.g. map boundaries)• ArcInfo ASCIIGRID (e.g., DEM)• GeoTIFF• OGC Standards
Educational• HTML• QuickTime
NONO2 2 concentrations over Berlin, Germany concentrations over Berlin, Germany – data from netCDF, maps from shapefile– data from netCDF, maps from shapefile
The IDV can integrate displays of a variety The IDV can integrate displays of a variety of geoscientific and other data including:of geoscientific and other data including:
© Crown copyright 2007
Unique IDV Features
Interactive probes for dataset exploration
• Parameter readouts• Vertical profiles• Time/Height displays• Lat/Lon/Alt position
QuickTime capture and playback
Incorporation of educational materials
User defined formulas
Extensible framework
Extensive use of network resources
© Crown copyright 2007
Web Enabled Features Integrated HTML Viewer
IDV includes a customized HTML viewer
Viewer can be used to provide context with associated data displays
IDV displays can be easily embedded in the HTML
Can be used as a customized UI which controls the IDV
© Crown copyright 2007
Web Enabled Features Use of Java Web Start™
• Java Web Start can be used to load in the IDV from a web page
• JNLP files can include pointers to configuration files and bundles for customization
• Web Start provides automatic software updates
© Crown copyright 2007
IDV as an Integrator
• Integrating data from disparate data sources is easy with the IDV
• Data can come from local and remote locations
• Data on different projections are automatically remapped
• Data from different times are synced Isosurface of a climate variable, topography from
ASCIIGRID DEM file, and interstate highways and county outlines/labels from shapefiles.