Geographic information - Portrayal (ISO 19117:2012)

ISO 19117:2012 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.

Geoinformation - Präsentation (ISO 19117:2012)

Information géographique - Présentation (ISO 19117:2012)

L'ISO 19117:2012 spécifie un schéma conceptuel pour la description des symboles, les fonctions de présentation qui font correspondre des symboles aux entités géospatiales ainsi que la collection des fonctions de présentation et de symboles dans des catalogues de présentation. Ce schéma conceptuel peut être utilisé dans la conception de systèmes de présentation. Il permet aux données d'entité d'être séparées des données de présentation, permettant aux données d'être présentées dans un ensemble de données de façon indépendante.

Geografske informacije - Prikazi in opisi geografskih podatkov (ISO 19117:2012)

Standard ISO 19117:2012 določa konceptualno shemo za opisovanje simbolov, funkcij za prikaz in opis geografskih podatkov, ki preslikajo prostorske značilnosti v simbole, ter zbiranje simbolov in funkcij za prikaz in opis geografskih podatkov v kataloge za prikaz in opis geografskih podatkov. Ta konceptualna shema se lahko uporablja pri načrtovanju sistemov za prikaz in opis geografskih podatkov. Omogoča, da so podatki o značilnostih ločeni od podatkov o prikazu in opisu geografskih podatkov, pri čemer so lahko podatki prikazani in opisani neodvisno od nabora podatkov.

General Information

Status
Published
Publication Date
20-Jan-2015
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
04-Apr-2014
Due Date
09-Jun-2014
Completion Date
21-Jan-2015

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SLOVENSKI STANDARD
SIST EN ISO 19117:2015
01-februar-2015
1DGRPHãþD
SIST EN ISO 19117:2006
Geografske informacije - Prikazi in opisi geografskih podatkov (ISO 19117:2012)
Geographic information - Portrayal (ISO 19117:2012)
Geoinformation - Präsentation (ISO 19117:2012)
Information géographique - Présentation (ISO 19117:2012)
Ta slovenski standard je istoveten z: EN ISO 19117:2014
ICS:
07.040 Astronomija. Geodezija. Astronomy. Geodesy.
Geografija Geography
35.240.70 Uporabniške rešitve IT v IT applications in science
znanosti
SIST EN ISO 19117:2015 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 19117:2015
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SIST EN ISO 19117:2015
EUROPEAN STANDARD
EN ISO 19117
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2014
ICS 35.240.70 Supersedes EN ISO 19117:2006
English Version
Geographic information - Portrayal (ISO 19117:2012)

Information géographique - Présentation (ISO 19117:2012) Geoinformation - Darstellung (ISO 19117:2012)

This European Standard was approved by CEN on 13 March 2014.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European

Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national

standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation

under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same

status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United

Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2014 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 19117:2014 E

worldwide for CEN national Members.
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SIST EN ISO 19117:2015
EN ISO 19117:2014 (E)
Contents Page

Foreword ..............................................................................................................................................................3

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SIST EN ISO 19117:2015
EN ISO 19117:2014 (E)
Foreword

The text of ISO 19117:2012 has been prepared by Technical Committee ISO/TC 211 “Geographic

information/Geomatics” of the International Organization for Standardization (ISO) and has been taken over

as EN ISO 19117:2014 by Technical Committee CEN/TC 287 “Geographic Information” the secretariat of

which is held by BSI.

This European Standard shall be given the status of a national standard, either by publication of an identical

text or by endorsement, at the latest by September 2014, and conflicting national standards shall be

withdrawn at the latest by September 2014.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.

This document supersedes EN ISO 19117:2006.

According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following

countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech

Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,

Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,

Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

Endorsement notice

The text of ISO 19117:2012 has been approved by CEN as EN ISO 19117:2014 without any modification.

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SIST EN ISO 19117:2015
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SIST EN ISO 19117:2015
INTERNATIONAL ISO
STANDARD 19117
Second edition
2012-12-15
Geographic information — Portrayal
Information géographique — Présentation
Reference number
ISO 19117:2012(E)
ISO 2012
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SIST EN ISO 19117:2015
ISO 19117:2012(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2012

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,

electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or

ISO's member body in the country of the requester.
ISO copyright office
Case postale 56  CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2012 – All rights reserved
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SIST EN ISO 19117:2015
ISO 19117:2012(E)
Contents Page

Foreword ............................................................................................................................................................ iv

Introduction ......................................................................................................................................................... v

1  Scope ...................................................................................................................................................... 1

2  Conformance ......................................................................................................................................... 1

3  Normative references ............................................................................................................................ 2

4  Terms and definitions ........................................................................................................................... 2

5  Abbreviated terms ................................................................................................................................. 6

6  Portrayal mechanism ............................................................................................................................ 6

6.1  Introduction ............................................................................................................................................ 6

6.2  Portrayal functions ................................................................................................................................ 8

6.3  Portray nothing .................................................................................................................................... 10

6.4  Default portrayal .................................................................................................................................. 10

6.5  Annotation ............................................................................................................................................ 10

6.6  Overview of portrayal .......................................................................................................................... 10

7  Package — ISO 19117 Portrayal ........................................................................................................ 11

7.1  Introduction .......................................................................................................................................... 11

7.2  Symbol structure ................................................................................................................................. 12

8  Package – Portrayal Core ................................................................................................................... 17

8.1  Package semantics ............................................................................................................................. 17

8.2  Package – Portrayal Function ............................................................................................................ 18

8.3  Package – Symbol ............................................................................................................................... 23

8.4  Package – Portrayal Catalogue .......................................................................................................... 41

9  Package – Portrayal Extensions ........................................................................................................ 43

9.1  Package semantics ............................................................................................................................. 43

9.2  Package – Conditional Function Extension ...................................................................................... 43

9.3  Package – Context Extension ............................................................................................................ 46

9.4  Package – Compound Symbol Extension ......................................................................................... 50

9.5  Package – Complex Symbol Extension ............................................................................................ 59

9.6  Package – Reusable Symbol Component Extension ...................................................................... 65

9.7  Package – Symbol Parameter Extension .......................................................................................... 69

9.8  Package – Function Symbol Parameter Extension .......................................................................... 75

10  Basic implementation package .......................................................................................................... 81

10.1  Package – Feature Data Model ........................................................................................................... 81

Annex A (normative) Abstract test suite ........................................................................................................ 83

Annex B (informative) Rules-based portrayal functions ............................................................................... 87

Annex C (informative) Enterprise view of portrayal ...................................................................................... 89

Bibliography ...................................................................................................................................................... 95

© ISO 2012 – All rights reserved iii
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SIST EN ISO 19117:2015
ISO 19117:2012(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies

(ISO member bodies). The work of preparing International Standards is normally carried out through ISO

technical committees. Each member body interested in a subject for which a technical committee has been

established has the right to be represented on that committee. International organizations, governmental and

non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the

International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.

The main task of technical committees is to prepare International Standards. Draft International Standards

adopted by the technical committees are circulated to the member bodies for voting. Publication as an

International Standard requires approval by at least 75 % of the member bodies casting a vote.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

rights. ISO shall not be held responsible for identifying any or all such patent rights.

ISO 19117 was prepared by Technical Committee ISO/TC 211, Geographic information/Geomatics.

This second edition cancels and replaces the first edition (ISO 19117:2005), which has been technically

revised.
iv © ISO 2012 – All rights reserved
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SIST EN ISO 19117:2015
ISO 19117:2012(E)
Introduction

This International Standard specifies a conceptual schema for portrayal data, in particular symbols and

portrayal functions. Portrayal functions associate features with symbols for the portrayal of the features on

maps and other display media. This schema includes classes, attributes, associations and operations that

provide a common conceptual framework that specifies the structure of and interrelationships between

features, portrayal functions, and symbols. It separates the content of the data from the portrayal of that data,

to allow the data to be portrayed in a manner independent of the dataset. This framework is derived from

concepts found in existing portrayal implementations, and specifies a conceptual standard for use in future

implementations (for example OGC Symbology Encoding and Styled Layer Descriptor Profile of WMS).

This International Standard provides an abstract model for developers of portrayal systems so that they can

implement a system with the flexibility to portray geographic data to a user community in a manner that makes

sense to that community.

The principal changes in this revision are to expand the concept of portrayal rules to more generic portrayal

functions, include definitions for symbols (including parameterized symbols), include both portrayal functions

and symbols in portrayal catalogues, and define a core portrayal schema, and extensions for specialized

cases.

This revision for the most part expands on the concepts in ISO 19117:2005, but concepts for portrayal

specifications (as a symbol instead of an operation), portrayal catalogue (also includes symbols), and

rules-based portrayal (multiple rules allowed) have been changed.
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SIST EN ISO 19117:2015
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SIST EN ISO 19117:2015
INTERNATIONAL STANDARD ISO 19117:2012(E)
Geographic information — Portrayal
1 Scope

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.

This International Standard is not applicable to the following:
 standard symbol collection (e.g. International Chart 1 – IHO);
 a standard for symbol graphics (e.g. scalable vector graphics [SVG]);
 portrayal services (e.g. web map service);
 capability for non-visual portrayal (e.g. aural symbology);
 dynamic rendering (e.g. on the fly contouring of tides);

 portrayal finishing rules (e.g. generalization, resolve overprinting, displacement rules);

 3D symbolization (e.g. simulation modeling).
2 Conformance

Any portrayal catalogue, portrayal function and symbol describing the portrayal of geographic information

claiming conformance with this International Standard shall pass the relevant tests of the abstract test suite

presented in Annex A, and those portrayal extension requirements that are applicable to the extension or

extensions being used.

Conformance classes are defined for the portrayal core, and the core plus extensions. These extensions

provide additional functionality, and are not mutually exclusive of each other.
Core portrayal conformance classes
Conformance class – portrayal core (general)
Conformance class – portrayal core – symbol
Conformance class – portrayal core – portrayal function
Conformance class – portrayal core – portrayal catalogue
Portrayal function extension conformance classes
Conformance class – portrayal core plus conditional function extension
Conformance class – portrayal core plus context extension
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ISO 19117:2012(E)
Conformance class – portrayal core plus function symbol parameter extension
Symbol extension conformance classes
Conformance class – portrayal core plus compound symbol extension
Conformance class – portrayal core plus complex symbol extension
Conformance class – portrayal core plus reusable symbol component extension
Conformance class – portrayal core plus symbol parameter extension
3 Normative references

The following referenced documents are indispensable for the application of this document. For dated

references, only the edition cited applies. For undated references, the latest edition of the referenced

document (including any amendments) applies.
ISO/TS 19103:2005, Geographic information — Conceptual schema language
ISO 19107:2003, Geographic information — Spatial schema
ISO 19109:2005, Geographic information — Rules for application schema
ISO 19110:2005, Geographic information — Methodology for feature cataloguing
ISO 19111:2007, Geographic information — Spatial referencing by coordinates
ISO 19115:2003, Geographic information — Metadata
ISO/TS 19139:2007, Geographic information — Metadata — XML schema implementation

ISO/IEC 19501:2005, Information technology — Open Distributed Processing — Unified Modeling Language

(UML) Version 1.4.2
4 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
4.1
annotation
any marking on illustrative material for the purpose of clarification

Note 1 to entry: Numbers, letters, symbols (4.31), and signs are examples of annotation.

4.2
class

description of a set of objects that share the same attributes, operations, methods, relationships and

semantics

Note 1 to entry: A class may use a set of interfaces to specify collections of operations it provides to its environment.

See: interface.
[SOURCE: ISO/TS 19103:2005, definition 4.27]
4.3
complex symbol
symbol (4.31) composed of other symbols of different types
EXAMPLE A dashed line symbol with a point (4.19) symbol repeated at an interval.
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4.4
compound symbol
symbol (4.31) composed of other symbols of the same type
EXAMPLE A point (4.19) symbol that is composed of two point graphics.
4.5
conditional feature portrayal function

function (4.11) that maps a geographic feature (4.8) to a symbol (4.31) based on some condition evaluated

against a property or attribute of a feature
4.6
curve

1-dimensional geometric primitive (4.13), representing the continuous image of a line

[SOURCE: ISO 19107:2003, definition 4.23]
4.7
dataset
identifiable collection of data

Note 1 to entry: A dataset may be a smaller grouping of data which, though limited by some constraint such as spatial

extent or feature (4.8) type, is located physically within a larger dataset. Theoretically, a dataset may be as small as a

single feature or feature attribute (4.9) contained within a larger dataset. A hardcopy map or chart may be considered a

dataset.
[SOURCE: ISO 19115:2003, definition 4.2]
4.8
feature
abstraction of real world phenomena

Note 1 to entry: A feature may occur as a type or an instance (4.14). Feature type or feature instance shall be used

when only one is meant.
[SOURCE: ISO 19101:2002, definition 4.11]
4.9
feature attribute
characteristic of a feature (4.8)

EXAMPLE 1 A feature attribute named “colour” may have an attribute value “green” which belongs to the data type

“text”.

EXAMPLE 2 A feature attribute named “length” may have an attribute value “82.4” which belongs to the data type

“real”.

Note 1 to entry: A feature attribute has a name, a data type, and a value domain associated to it. A feature attribute for

a feature instance (4.14) also has an attribute value taken from the value domain.

Note 2 to entry: In a feature catalogue, a feature attribute may include a value domain but does not specify attribute

values for feature instances.
[SOURCE: ISO 19101:2002, definition 4.12]
4.10
feature portrayal function
function (4.11) that maps a geographic feature (4.8) to a symbol (4.31)
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4.11
function

rule that associates each element from a domain (source, or domain of the function) to a unique element in

another domain (target, co-domain, or range)
[SOURCE: ISO 19107:2003, definition 4.41]
4.12
geographic information

information concerning phenomena implicitly or explicitly associated with a location relative to the Earth

[SOURCE: ISO 19101:2002, definition 4.16]
4.13
geometric primitive
geometric object representing a single, connected, homogeneous element of space
[SOURCE: ISO 19107:2003, definition 4.48]
4.14
instance
object that realizes a class (4.2)
[SOURCE: ISO 19107:2003, definition 4.53]
4.15
layer

basic unit of geographic information (4.12) that may be requested as a map from a server

[SOURCE: ISO 19128:2005, definition 4.6]
4.16
metadata
data about data
[SOURCE: ISO 19115:2003, definition 4.5]
4.17
parameterized feature portrayal function

function (4.11) that maps a geographic feature (4.8) to a parameterized symbol (4.18)

Note 1 to entry: A parameterized feature portrayal function (4.10) passes the relevant attribute values from the

feature instance (4.14) for use as input to the parameterized symbol (4.31).
4.18
parameterized symbol
symbol (4.31) that has dynamic parameters

Note 1 to entry: The dynamic parameters map to the attribute values of each feature (4.8) instance (4.14) being

portrayed.
4.19
point
0-dimensional geometric primitive (4.13), representing a position
[SOURCE: ISO 19107:2003, definition 4.61]
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4.20
portrayal
presentation of information to humans

Note 1 to entry: Within the scope of this International Standard, portrayal is restricted to the portrayal of geographic

information.
4.21
portrayal catalogue
collection of defined portrayals (4.20) for a feature (4.8) catalogue

Note 1 to entry: Content of a portrayal catalogue includes portrayal functions (4.23), symbols (4.31), and portrayal

context (4.22) (optional).
4.22
portrayal context

circumstances, imposed by factors extrinsic to a geographic dataset (4.7), that affect the portrayal (4.20) of

that dataset

EXAMPLE Factors contributing to portrayal context can include the proposed display or map scale, the viewing

conditions (day/night/dusk), and the display orientation requirements (north not necessarily at the top of the screen or

page) among others.

Note 1 to entry: Portrayal context can influence the selection of portrayal functions (4.23) and construction of

symbols (4.31).
4.23
portrayal function
function (4.11) that maps geographic features (4.8) to symbols (4.31)

Note 1 to entry: Portrayal (4.20) functions can also include parameters and other computations that are not

dependent on geographic feature properties.
4.24
portrayal function set
function (4.11) that maps a feature (4.8) catalogue to a symbol set (4.35)
4.25
portrayal rule
specific type of portrayal function (4.23) expressed in a declarative language

Note 1 to entry: A declarative language is rule-based and includes decision and branching statements.

4.26
portrayal service
generic interface used to portray features (4.8)
4.27
render
conversion of digital graphics data into visual form
EXAMPLE Generation of an image on a video display.
4.28
simple symbol
symbol (4.31) that is neither compound nor parameterized
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4.29
spatial attribute

feature attribute (4.9) describing the spatial representation of the feature (4.8) by coordinates, mathematical

functions (4.11) and/or boundary topology relationships
4.30
surface

2-dimensional geometric primitive (4.13), locally representing a continuous image of a region of a plane

[SOURCE: ISO 19107:2003, definition 4.75]
4.31
symbol

portrayal (4.20) primitive that can be graphic, audible, or tactile in nature, or a combination of these

4.32
symbol component
symbol (4.31) that is used as a piece of a compound symbol (4.4)
4.33
symbol definition
technical description of a symbol (4.31)
4.34
symbol reference

pointer in a feature portrayal function (4.10) that associates the feature type with a specific symbol (4.31)

4.35
symbol set
collection of symbols (4.31)

Note 1 to entry: Symbol sets are usually designed for a community of interest to portray information of interest to the

community.
5 Abbreviated terms
CRS Coordinate Reference System
URL Uniform Resource Locator
UML Unified Modeling Language (ISO 19501)
6 Portrayal mechanism
6.1 Introduction

This International Standard is organized as a core portrayal model and a series of extensions.

The core portrayal model uses portrayal functions to map geospatial features to symbols. A portrayal function

set maps a feature catalogue to a symbol set. A Feature Portrayal Function maps a geospatial feature to a

symbol. A Portrayal Catalogue that can be used to transmit symbols and portrayal functions is also a part of

the portrayal core.

There are two extensions to the portrayal function. The Conditional Function Extension extends the basic

portrayal function to enable conditions to be applied in the function. Conditions can test for feature attributes,

geometry, and other properties of the feature. The Context Extension extends the basic portrayal function to

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enable contextual information such as display scale, viewing conditions, and other factors external to the

application schema of the geospatial dataset to be utilized in portrayal functions.

The core symbol model provides for the definition of a basic symbol, which includes building up a symbol

made from multiple components. There are three extensions of the symbol model, the Compound Symbol

Extension (9.4), the Complex Symbol Extension (9.5), and the Reusable Symbol Component Extension (9.6)

that allow a symbol to be stored at an external URL.

Finally, symbols can be parameterized by use of a Symbol Parameter Extension, and a Function Symbol

Parameter Extension. Whereas conditional extensions allow a portrayal function to point to a specific symbol

based on an attribute condition, the parameterized symbol uses feature attribute information as input to a

symbol definition. The Function Symbol Parameter Extension allows that feature attribute information to be

passed to the symbol by the Feature Portrayal Function.

This International Standard defines a feature-centred function-based portrayal mechanism. Instances of

features are portrayed based on portrayal functions, which make use of geometry and attribute information.

The relationship between the feature instances, attributes and the underlying spatial geometry is specified in

an application schema according to ISO 19109. Spatial geometry and associated topological relationships are

defined in ISO 19107.

Portrayal information is needed to portray a dataset containing geographic data. The portrayal information is

handled as symbol references selected according to specific portrayal functions. The portrayal mechanism

makes it possible to portray the same dataset in different ways without altering the dataset itself.

The portrayal mechanism is illustrated by Figure 1.
Portrayal Symbol Rendering Output
Feature
Engine Reference Engine Portrayal
Data
(e.g. G M L)
Portrayal Symbol
Function Definitions
Figure 1 — Portrayal mechanism

The symbol definitions and portrayal function shall not be part of the dataset. The portrayal functions and

symbol shall be able to be transferred in a portrayal catalogue. The symbols shall be referenced from

portrayal functions. The feature portrayal functions shall be specified for the feature class or feature instances

they will be applied on. The symbol definitions may be stored externally and referenced using a universal

reference standard such as a network based URL. Portrayal information may be specified either by sending a

portrayal catalogue with the dataset, or by referencing an existing portrayal catalogue from metadata.

In addition, the user may want to apply a user defined portrayal function and symbol definition. The model in

Figure 2 shows how the portrayal catalogue is referenced by the dataset metadata. Only the metadata

reference is shown and not the contents of the portrayal catalogue (see ISO 19115).

© ISO 2012 – All
...

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