C-squares examples

Sample C-squares-enabled applications, as at mid-2011

(1) "MarLIN" - CSIRO Marine and Atmospheric Research data directory (metadata system)

- using c-squares for spatial searching and mapping, via stored c-squares index

• MarLIN click-on-a-map search interface for research vessel data
• Sample metadata record: Franklin Voyage FR 09/87 CTD Data
• Sample metadata record: Franklin Voyage FR 02/99 CTD Data
• Sample of the c-squares spatial index for MarLIN records

NB: look for the link "Click here to show data coverage by 0.5 degree squares" near the top of any metadata record.

(2) "CAAB" (Codes for Australian Aquatic Biota) - CSIRO Marine and Atmospheric Research marine species database

- using c-squares for mapping, plus onward active (clickable) "quick maps", via stored c-squares index

• CAAB live data access
• Sample CAAB search result - for species name includes "shark"
• Sample CAAB taxon report - fish species = "orange roughy" (look for the link "CMR Catches Map" near the bottom of the page)
• Sample CAAB taxon report - fish species = "brownband seaperch" (look for the link "CMR Catches Map" near the bottom of the page)
• Sample of the c-squares spatial index for CAAB species

(3) CSIRO Marine and Atmospheric Research Satellite Data Archive

- using c-squares for spatial searching, and mapping of scene footprints, via stored c-squares index

• CSIRO Marine Research's NOAA AVHRR satellite data spatial search page
• Sample spatial search result - data from an example 5 x 5 degree square
• Sample of the c-squares spatial index for the CMR Satellite Data Archive

(4) OBIS, the Ocean Biogeographic Information System - access to global distribution data on 30,000+ marine species

- using c-squares for spatial searching, mapping, plus onward active (clickable) "quick maps", via stored c-squares index

• OBIS spatial search (International Portal)
• Sample OBIS spatial search result - data from an example 10 x 10 degree square
• Sample category search result - data for "all whales" (= mix of spatial and non-spatial data)
• Sample of the "data level" c-squares spatial index for OBIS species (record by record, i.e. 1 square per individual species occurrence record)
• Sample of the "index level" c-squares spatial index for OBIS species (species by species, i.e. many squares, = summary "footprint" per species)
• OBIS Australia

(5) CSIRO Marine and Atmospheric Research marine species modelled distributions (live mapping and data extraction currently restricted to CMAR staff only, however sample pages below are open access)

- using c-squares for interactive map generation, selecting from a stored list of potential c-squares according to inputted parameters

• System description page
• Sample CAAB taxon report - fish species = "orange roughy" (look for the link "Modelled distribution" near the bottom of the page)
• Sample CAAB taxon report - fish species = "brownband seaperch" (look for the link "Modelled distribution" near the bottom of the page)
• Sample of the c-squares spatial index used as a lookup table for the CMAR marine species modelled distributions mapping application

(6, 7) Other systems: FishBase

- using c-squares for on-demand mapping, via on-the-fly lat/lon-to-c-square conversions

   

• FishBase search page
• FishBase Distribution data for "Atlantic Salmon" (Salmo salar) (may take a while to load) - look for link "c-square (CSIRO) mapper" at top right of page

(8) "Mapping Tools" development site at Australian Antarctic Division

- includes ColdFusion tools for c-squares encoding; encoded examples (points, squares, and a research voyage); and prototype implementations of c-squares mappers in Flash and SVG (Scalable Vector Graphics)

• Antarctic Division Mapping Tools page

(9) Database reporting tool (prototype as at Sep 2005)

- includes reports on data lats/lons in specified ranges, data points on land (using a c-squares lookup table), and on-the-fly data mapping by 0.5 degree square (e.g. 120,000 records, occupying 840 squares in this instance)

• Sample Database report

(10) AquaMaps project (IfM-Geomar, Kiel, Germany)

- aiming to produce on-line predictive maps for all marine species, based on ecological niche and habitat modelling, and expert input. Species occurrence data and ecological data are "binned" by half degree squares, passed through species-specific environmental modelling envelopes, then the result sent to the CMAR c-squares mapper for on-the-fly map generation (colour-coded maps showing the distribution of 5 probability classes for a given species)

• Live map access

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Page last updated: 5 August 2011