News and updates c-squares (original) (raw)
21 September 2011
A powerpoint presentation given to the initial ANZLIC National Nested Grid workshop, Canberra, September 2011, added to the resources page
15 August 2011
A powerpoint presentation given to the PEMS (Platform for Environmental Modelling Support) demonstrator project, October 2007 (with Sept 2009 update) added to the resources page, for information to the ANZLIC National Nested Grid project participants
15 August 2011
A note on c-squares applicability and a php implementation of c-squares posted on the web here by user Tomislav Filipčić
15 August 2011
C-squares system description on the "Tools" section of the Atlas of Living Australia website
15 August 2011
Brief c-squares system descriptions on Wikipedia and The GEOCODE Encyclopedia website
15 August 2011
A 2010 c-squares related post by Rod Page, Universty of Glasgow dealing with the potential of including c-squares identifiers in RDF representations of biological data distributions
15 August 2011
JSpatial, an open source Java library which includes a framework for handling the C-Squares Spatial Indexing Scheme
15 August 2011
Description of DIGMAP, a geo-temporal Web gazetter service supporting both GML and c-squares geometries
15 August 2011
Discussion of c-squares in the MIT Press publication "Georeferencing: The Geographic Associations of Information" by Linda L. Hill, 2006, pp. 71-75 and elsewhere
24 December 2008
A Ruby script for creating c-squares added to the resources page courtesy of Jamie Brough (UK).
16 June 2006
New mapper test page created, with four example datasets that can be plotted ranging from small (1 square) to large (85,000 squares, in 5 different colours).
15 June 2006
Source code for V3.0 of the c-squares mapper available on "files" section of c-squares SourceForge site (http://sourceforge.net/project/showfiles.php?group_id=158386).
May-June 2006
Revised version (v.3.0) of the c-squares mapper constructed, including improved base maps, "globe views", seamless pan and zoom, and more. This version utilises the excellent xplanet open source application to draw the "globe views" (many thanks to xplanet creator, Hari Nair).
January 2006
C-squares project page started on SourceForge: see http://csquares.sourceforge.net/.
December 2005
Revised version (v.1.1) of the c-squares specification posted.
November-December 2005
November 2005
The "AquaMaps" project from the University of Kiel goes live, presenting interactive predicted distribution maps for hundreds of marine species utilising the c-squares mapper (For an entry point, go to http://filaman.ifm-geomar.de/tools/AquaMaps/HCMapSpeciesList.php).
April 2005
Oracle PL/SQL source code for validating a given c-squares code and c-squares string posted on resources page.
May 2004
Updated and improved example applications page created for the c-squares website, including reference to all current known applications running c-squares, plus a prototype mapping page (including c-squares mappers in SVG and Flash) from the Data Centre at the Australian Antarctic Division.
May 2004
Two papers on c-squares - related systems accepted for presentation at EOGEO 2004 technical workshop, London, UK, June 2004. Abstracts available here and here.
September 2003-March 2004
Full c-squares spatial indexing incorporated into major upgrade of OBIS, the Ocean Biogeographic Information System, running at Rutgers University, NJ, USA; revised version released 23 March 2004 (approx. 1.6 million records, of 20,000 different marine species, indexed).
August-September 2003
Prototype c-squares spatial search facility created for CSIRO Marine and Atmospheric Research Remote Sensing facility's archive of NOAA AVHRR satellite data, based on a c-squares index of "footprints" of c.60,000 satellite passes. Powerpoint presentation describing the method used available here.
10 June 2003
C-squares "lat/long-to-c-square converter" upgraded with new options to handle lines and polygons crossing the international date line, and polygons surrounding either the north or south pole (e.g. as with polar satellite data).
13 June 2003
C-squares FAQ ("Frequently Asked Questions") page added to the website.
10 June 2003
C-squares "lat/long-to-c-square converter" upgraded with new options to handle lines and polygons crossing the international date line, and polygons surrounding either the north or south pole (e.g. as with polar satellite data).
7 April 2003
Release of an upgraded version of the c-squares mapper, including:
ability to specify for the initial c-squares to be plotted in any of a range of colours- ability to plot multiple strings (in multiple colours) on the same base map
- capability to return "active maps" (with "click-on-a-square" functionality), to enable live spatial queries back to the supplier's own database.
Also created: a new, web input form "c-squares active map tester" for demonstration and testing of the new c-squares mapper features.
Technical details, along with the link to "c-squares active map tester", are available here.
24 March 2003
20 March 2003
"Official" system description, entitled "C-Squares", a New Spatial Indexing System and its Applicability to the Description of Oceanographic Datasets, published in Oceanography vol. 16 no. 1, March 2003. .pdf copies posted on c-squares website in high resolution (file size 8.5 Mb) and low resolution (file size 0.5 Mb) versions.
7 March 2003
OBIS (the Ocean Biogeographic Information System, USA), http://www.iobis.org/, opts to use c-squares as primary spatial index for all its species records (approx 1 million now, and expected to grow rapidly over the next few years), to be functional before system launch in October 2003.
February-March 2003
Work Commenced on implementing "click on a square" functionality for the c-squares mapper - for example output, see this link, scroll down to the bottom of the page and click on "CMAR catches map", then click on (or close to) a red square or two.
February 2003
On-line c-square lat/long converter extended with prototype code to handle:
- lines (start point, end point)
- polylines (multiple lines where end point of one is start point of the next), and
- filled polygons
January 2003
New, improved version of "get_csquare" implemented for use at CSIRO Marine and Atmospheric Research.
24 December 2002
Revised "Oceanography" paper on c-squares submitted for publication following reviewers' comments; accepted for publication, 28 December.
2 December 2002
C-squares concept presented at the NASA's GCMD (Global Change Master Directory) system developers offices in Lanham, Maryland.
2 December 2002
C-squares concept presented at the US FGDC (Federal Geographic Data Committee) headquarters in Reston, Virginia. See Announcement and Powerpoint presentation delivered, via the FGDC website. (Copy of the same presentation also posted on the c-squares website here).
November 2002
C-squares concept presented at the 2002 Colour of Ocean Data Conference in Brussels. Abstract and Poster presentation available via the csquares website.
October 2002
High-level (10 slide) C-squares overview Powerpoint presentation prepared.
October 2002
"Google" internet search is successfully indexing the c-square codes posted within "MarLIN" metadata records - for an example pre-configured search, click this link.
26 August 2002
Added c-squares codes as explicit spatial references in "MarLIN" HTML metadata pages - to discover whether these can be used as a searchable field with internet search engines.
July-August 2002
Drafts prepared of official "c-squares system description" paper and circulated for comment to interested parties; initial version submitted to "Oceanography" magazine for consideration, 29 August 2002; also incorporating diagrams of WMO Squares provided by Ruth Curry, Woods Hole Oceanographic Institution) from her documentation to "Hydrobase", and satellite imaging tracks by Mike Botts from the "Space-Time Toolkit".
30 May 2002
Phoebe Zhang's Java implementation of "get_csquare" (from OBIS Distributed Data Search) and Eli Agbayani's ColdFusion version (from FishBase searches) posted on the c-squares website.
13 May 2002
First public presentation given on c-squares, at the 2002 EOGEO Technical Workshop, Ispra, Italy. Abstract and Powerpoint presentation available, via the EOGEO website (visit this link for list of all EOGEO 2002 presentations). (NB, Powerpoint presentation also available via the c-squares website, here).
10 May 2002
Coloured A4 handout/flyer for c-squares produced, in advance of the 2002 EOGEO meeting.
23 April 2002
C-squares used for spatial indexing of 200,000 biological "catch" records at CSIRO Marine and Atmospheric Research; index accessible via "CAAB" taxon master list (mainly for internal users, however 2 external examples accessible via Sample c-squares-enabled metadata records page - look for "orange roughy" and "brownband seaperch").
22 April 2002
Support for a new element "legend" added to the c-squares mapper.
20 March 2002
Initial c-squares search interface added to CMAR's "MarLIN" metadata system, after encoding some 500 records with relevant c-squares codes.
18 March 2002
Sea-Surface-Temperature (SST) images sourced from CSIRO's Division of Atmospheric Research added to the c-squares mapper, as new options for base maps.
12 March 2002
FishBase (http://www.fishbase.org/), adds c-squares mapping functionality to its "Point Distribution" and "Biogeographic Modelling" pages for any species.
6 March 2002
Initial version of an online c-squares lat-long converter constructed, and added to the website.
12 February 2002
The c-squares mapper now includes support for "Pacific centred" maps, i.e., longitude can change from +180 to -180 in the middle of the map without incurring a problem.
30 January 2002
OBIS (the Ocean Biogeographic Information System, USA), http://www.iobis.org/, adds c-squares mapping functionality to its "Distributed Data Search" facility for any species.
24 January 2002
"Enlarge" facility added for maps produced by the c-squares mapper.
22 January 2002
"get_csquare" PL/SQL code posted on website (example code to convert lat/long pair to a c-square reference)
21 January 2002
Draft version 1 of the c-squares specification posted.
1-15 January 2002
First version of the c-squares mapper constructed (initially as replacement for the off-line "Xerox PARC Map Viewer", now discontinued).
January 2002
Example c-squares enabled metadata record (from CMAR "MarLIN" metadata directory) posted on website.
13 December 2001
C-squares website started at this address (http://www.cmar.csiro.au/csquares/).
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This page last updated: 15 August 2011