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ISO 128-21:1997 Technical drawings — General principles of presentation — Part 21: Preparation of lines by CAD systems ISO 128-22:1999 Technical drawings — General principles of presentation — Part 22: Basic conventions and applications for leader lines and reference lines
Grid systems started as helper lines for written books. Artists used grid systems to layout the content – text and images – in a manner that makes reading and absorption easier. Newspapers, books, magazines, and classifieds, etc., all use different grid systems that make the optimum use of space for better reading and presentation. [4]
The "globe", in the DGG concept, has no strict semantics, but in geodesy a so-called "grid reference system" is a grid that divides space with precise positions relative to a datum, that is an approximated a "standard model of the Geoid". So, in the role of Geoid, the "globe" covered by a DGG can be any of the following objects:
2 Using new features: live-link markers and a dashed-line feature to mark out a distance 3 Using the new photo-panel feature to highlight a landmark 4 Using numbered dots, including the new lines features to sort out crowded dots
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Pages for logged out ... (Top) 1 Usage. 2 Parameters. 3 Supporting templates. Toggle the table of contents. Template: Location map-line/draw ... to draw a latitude ...
The individual cells of a grid system can also be useful as units of aggregation, for example as a precursor to data analysis, presentation, mapping, etc. For some applications (e.g., statistical analysis), equal-area cells may be preferred, although for others this may not be a prime consideration.
The World Geographic Reference System (GEOREF) is a geocode, a grid-based method of specifying locations on the surface of the Earth. GEOREF is essentially based on the geographic system of latitude and longitude , but using a simpler and more flexible notation .