Which reads its accompanying ASCII data file GRIDDESC.ĭescribing the main computational grids for the SMRAQ regional seasonal User-Manual section on Coordinate and Grid Related Routines).Īn implementation of grid parameter access capabilities is given by There is a software subsystem for manipulating map projections, Specified below) are kept in file headers, and stored also in file Names and complete descriptions for grids and coordinate systems (as So that they are fully self-contained, both I would not anticipate that we should need more than aįew thousand such grids. Names of coordinate systems and of grids currently in use within the There are finite (and extensible) lists of (consistent with the rest of the "name" objects manipulated Named entities, for purposes of unambiguous tracking andĭatabase storage.
Grids and coordinate systems (map projections) are These grids and the underlying coordinate systems for their ownīecause of the ill-conditioned nature of arithmetic relating toĬoordinate transformations, descriptive parameters are kept inĭouble precision (identifier tokens and dimensioning parameters Computational processes may need to knowīoth the geometry and the geographic descriptive parameters of Indexing system will specify the grid on which the data existsĪs part of the query. Presented as data on horizontally-regular grids. Grids and Coordinates for Models-3 Horizontal Coordinates and GridsĪt this time, we assume that much of the data for Models-3 will be On The Definition of Grids and Coordinates for Models-3 On The Definition of Horizontal and
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