ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies. (ISO member bodies). The work. Scope. This International Standard specifies a conceptual schema for describing symbols, portrayal functions that map geospatial features to. iso-harmonized-model – Revision /isotc/iso branches/ · tags/ · trunk/.
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iso-harmonized-model – Revision /isotc/iso
This International Standard specifies a conceptual schema for describing symbols, portrayal functions that map geospatial features to symbols, and the collection of symbols and portrayal functions into portrayal catalogues. This conceptual schema can be used in the design of portrayal systems.
It allows feature data to be separate from portrayal data, permitting data to be portrayed in a dataset independent manner. The conceptual schema defined by ISO allows the development of a portrayal for a specific application field. This schema can be exchanged and implemented in different applications.
One of the main benefits of ISO is that it will allow datasets to be displayed according to some specification without changing or isi the original dataset. Portrayal allows the client to create a unique representation for features to communicate an explicit meaning. ISO can be applied to a variety of products, such isp hard copy maps, digital maps, and online representations in a web browser.
Portrayal is the process of presenting information to humans.
The portrayal mechanism as shown in the figure below makes it possible to portray a single dataset in multiple ways without altering the dataset.
Each feature will point to a rule that is applied when the feature is generated on a map, for example.
DGIWG Portrayal Registry
The schema isoo a series of UML packages, defining the portrayal core, and extensions for conditional functions, context, compound symbols, reusable components, parameterised symbols and the portrayal functions that use parameterised symbols. Fundamental to the concept of portrayal is that the symbols and portrayal functions shall be not be part of the dataset. Retrieved from ” http: Navigation menu Personal tools English Log in.
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ISO specifies a conceptual schema for describing symbols, portrayal functions that map geographic features to symbols, and the collection of symbols and portrayal functions into portrayal catalogues.
Portrayal core general Portrayal core — symbol Portrayal core — portrayal function Portrayal core — portrayal catalogue Portrayal core plus condition function extension Portrayal core plus context extension Portrayal core plus symbol parameter extension Portrayal core plus compound symbol extension Portrayal core plus complex symbol extension Portrayal core plus reusable symbol component extension Portrayal core plus symbol parameter extension.