SET (4): THEME RECORDS
Each Theme (class) in the
by several Records:
- Overall theme’s characteristics
- Definition of theme’s entity-types (subclasses)
- List of objects and object's descriptors in each
entity-type
Theme-Group is defined
SUB-SET (4.1): THEME DEFINITION RECORDS
SUB-SET (4.1.1): THEME HEADER RECORD
It gives Theme-ID, Theme definition and No.,
definition and list of Entity-Types in this Theme
and index to their records in the Transfer.
SUB-SET (4.1.2): THEME QUALITY RECORDS
Two sets of records are provided:
- First set: overall quality evaluation for the
whole of the theme’s content, such as source and
methods of data acquisition, date of cultural
validity, completeness, reliability of
positional and classification accuracy
(miscloser matrix of a selected sample)
- Second set: set of records to provide quality
evaluation for sub-sets of theme’s objects. The
quality parameters included are:
. indicator for source and method of data
acquisition
. indicator for cultural validity and rate of
change
. Resolution indicator and its map scale
equivalence
. Positional Accuracy (numerical statistical
estimate for coordinate miscloser)
. Indicator for attribute Accuracy
(misclassification matrix of a selected
sample)
SUB-SET (4.2): THEME ENTITY-TYPE DEFINITION
RECORDS
THEME ENTITY TYPE HEADER RECORD
Theme-Entity Type in order to
give definition of this sub-class: its. ID,
description, code and no. of attributes for
theme’s objects in this sub-class.
SUB-SET (4.2.1):
A record per one
SUB-SET (4.2.2): ATTRIBUTE DEFINITION RECORDS
One set of records per one Theme’s Entity-Type in
order to give definition of the Object’s
Attributes in this sub-class. The Attribute
Descriptors include ID, definition and source of
authority for attribute definition, format, and
range of valid values.
SUB-SET (4.3): OBJECT LIST RECORDS
One set of records per one Theme Entity Type in
order to give list of objects in this Entity Type:
its Name, ID, Class-Code, Bounding Rectangle,
Reference Point, Orientation, Evaluation code and
reference to Theme’s Quality Records, List of
Attribute ID and Values, References to object’s
components (other objects in this Theme and/or Map
Elements in Theme 0 which form this object).
SET (5): MAP ELEMENTS
ELEMENTS)
One set of data per Theme-Group (Theme 0) in order
to give spatial and topological descriptors to the
Primitive Elements (point/line/area) which form
the Objects in the Themes of this Theme-Group.
This set consists of:
(TOPOLOGICALLY RELATED
SUB-SET (5.1): NODE/POINT-RECORDS
A group of records to provide the Node/Point ID,
location, No. and list of Line-ID of the Lines
attached to this Node, List of classes (themes)
vhich share this element, source and quality
parameter for data acquisition.
SUB-SET (5.2): LINE-RECORDS
A group of records to provide the Line’s ID,, list
of Line’s vertices, start and end Nodes, left and
right Areas, list of classes (themes) which share
this element, source and quality parameter for
data acquisition.
SUB-SET (5.3): AREA-RECORDS
A group of records to provide the Area’s ID, list
of bounding Lines, Area’s label point, list of
classes (themes) which share this element, source
and quality parameter for data acquisition.
+ ———— A — i — — — MÀ €— A — € ——— Un —— — —— M M — m
TRANSFER GLOBAL Information - SET (1)
(followed by several area-tiles data )
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DATA AREA-TILE (1) Information - : SET (2)
(followed by several theme-groups data)
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DATA THEME-GROUP (1.1) Information - SET (3)
(followed by several themes data)
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DATA THEME (1.1.1) Information - SET (4)
THEME DEFINITION - SET(4.1)
(followed by several entity-types Saca)
q------——-------—-—-—--—-----------2----2-7-7-7
ENTITY-TYPE DEFINITION - SET(4.2)
] (fottoves by a list of objects)
—— — A — — — — — — — — — — — —— — — — e — — e M — —— — — T
| OBJECT DESCRIPTORS - SET(4.3)
(& references to other object
records and/or elements in THEME 0
4R----------------------------------- +
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: - SET (4)
+ N ) —— 50 0 0 A ——— a — — A — € -— m — on 2 A er
DATA THEME (1.1.k) Information - SET (4)
4---------------------------------2-22-272-77-777779--7-77
DATA THEME (1.1.0) : - SET (5)
4--------l2--------2------------------*
Nodes/Arcs/Polygons
for all objects in the Theme-Group
(Geonotty and Topology)
A
PERL mmm mmm mmm ———————————————— mm
. - SET (3)
+ A A ED EEE “8 0 00 “0 “0 2 “rer “rs
TE GROUP (1.m) Information - SET (3)
i DATA THEME (1.m.1) Information - SET (4)
+ ———— —— o m oo o ——— m ooo o m oe m mm
— BET. (4)
i DATA THEME (1.m.0) - SET (5)
fm me om of mm mm tm mm te mm tm nm =
; = SET (2)
+ o_o i rm
DATA AREA-TILE (n) Information - SET (2)
i THEME-GROUP (n.1.) Information - SET (3)
+ am ——- mom - 9 — ooo oo a — m t A e e € À
| DATA THEME (n.1.1) Information - SET (4)
T ———————u m "€ -— D" ns au es mo om m mo ——R um m m t m m m
. - C SET (4)
Ree Dame
| ‘| DATA THEME (n.1. 0) * SET (5)
4R-R---------2-2-----2-----2----------------------------
= SET (3)
R--R--4--------2-2-----------------------------------------
figure (1) : Structure of the Data Transfer
236
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