1 / 2

C-squares concept: hierarchical text-based identifiers for global grid squares

C-squares concept: hierarchical text-based identifiers for global grid squares. Example 10x10 deg. square ID: 3414 Example 5x5 deg. square ID: 3414:1 Example 1x1 deg. square ID: 3414:100 Example 0.5x0.5 deg. square ID: 3414:100:1 (etc.).

cyrus-rosa
Download Presentation

C-squares concept: hierarchical text-based identifiers for global grid squares

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. C-squares concept: hierarchical text-based identifiers for global grid squares Example 10x10 deg. square ID: 3414 Example 5x5 deg. square ID: 3414:1 Example 1x1 deg. square ID: 3414:100 Example 0.5x0.5 deg. square ID: 3414:100:1 (etc.) Identifiers are meaningful, e.g. “3414” indicates the following: -- global quadrant “3” (SE) – 3414 -- 40+ degrees of latitude (S) – 3414 -- 140+ degrees of longitude (E) – 3414 The spatial footprint of any data item can be represented as a list of the square IDs (c-square codes) that it intersects.

  2. Data extract Manual (GUI) data encoder Spatial query interface Spatial search result Clickable map - can function as new spatial query interface C-squares decoder ( -> GML, KML, other) Point data encoder Line data encoder Polygon data encoder Data items / Base Data with associated spatial extents (points, lines, polygons, multi-points, etc.) C-squares workflow options Non c-squares mapper (s) – e.g. Google Earth, WMS, others... c-squares encoding spatial indexing on-the-fly mapping Desktop GIS Spatial Index(stored list of c-squares for every data item) C-squares mapper (decoder built in) mapping from the spatial index data request (spatial subset) data “footprints” export / import item retrieval request http://www.marine.csiro.au/csquares/

More Related