German DIN Supports Foundations of Datacubes
January 2019 - What is a coverage, after all? This fundamental spatio-temporal data structure, encompassing (among others) datacubes, is widely used, based on adopted and implemented OGC and ISO standards like WCS. However, the conceptual foundations are outdated. This is being changed now.
On a high level it is clear: ISO 19123, which is identical to OGC Abstract Topic 6, describes the foundations of coverages. Accordingly, coverages encompass regular and irregular spatio-temporal grids, point clouds, and general meshes. However, this standard - crafted around the year 2000 - is not up-to date and needs urgent revision according to ISO and other experts. Definitions like "a raster is like a grid of pixels on a cathode ray tube" are not exactly representing modern understanding.
Therefore, ISO since several years has set up a New Work Item Proposal (NWIP) based on which project leader Prof. Liping Di at the US George Mason University in the US is looking for a writer of the specification. Peter Baumann, rasdaman CEO, was approached, but could not do it earlier due to urgent work on other standards. In 2018, an agreement was finally reached with DIN, the German standardization body, to establish a national project led by Peter Baumann to establish a new abstract coverage specification.
ISO has decided to...