CME CVM API

1
CME CVM API
2
Basic Question

• Interactive interface?
• Programmatic access.
• Static interface?
• Download file to access locally.
• Both.

3
Proposed API

• VelocityContainer getVelocityAtPoint (Location
  atLocation,
• Parameter params)
• 2DVelocityContainer getVelocityForSurface
  (GriddedSurface surfaceDesc,
• Parameter params)
• 3DVelocityContainer getVelocityForVolume
  (GriddedVolume volumeDesc,
• Parameter params)
• DataFile getVelocityFileAtPoint (Location
  atLocation,
• Parameter params)
• DataFile getVelocityFileForSurface
  (GriddedSurface surface,
• Parameter params)
• DataFile getVelocityFileForVolume (GriddedVolume
  volume,
• Parameter params)
• ParameterDescription getParameterList (String
  forMethod)

4
Different APIs

• Provide distinct APIs for different users.
• For example
• ETree getOctreeVelocityForVolume (GeoVolume
  volume,
• float frequencyHz,
• int pointsPerWavelength,
• Parameter params)
• ETree getGridVelocityForVolume (GeoVolume volume,
• int resolution,
• Parameter params)
• Parameters could contain optional values.
• ETrees vs ASCII files?

5
Of Points, Surfaces, and Volumes.

• Point Locations
• Lat/Lon
• UTM
• Surfaces
• Planar or not
• Regular grid or not
• Volumes
• Lat/Lon, UTM, local
• Spherical or flat

Location

• LatLonLocation
• Latitude
• Longitude
• Datum
• Elevation
• Depth
• Geoid

• UTMLocation
• UTMy
• UTMx
• UTMzone
• Elevation
• Depth
• Geoid
• Correction

6
Of Points, Surfaces, and Volumes.

• Planar
• Strike, dip, origin, extents.
• Normal, origin, extents.
• Gridded
• ala OpenSHA.
• Need data value container.
• Triangulated
• GoCAD TSurfs (CFM, USR).
• GNU Triangulated Surfaces (open source.)

7
Implementation

• 1D Web Service implementation started.
• Based on proposed API.
• WSDL definitions.
• Get running on Axis.
• Other models as Web Services?

8
Some other things

• Units
• String names.
• FISSURES-like.
• Something in between?
• Standards.
• None.
• On every value?
• KRR on Units.

9
Other things

• Metadata interface?
• Programmatic interface for querying metadata?
• Property getMetadata()
• Property getMetadata (String name)
• Value getMinimumResolution()