Professional Application Development
Download
Report
Transcript Professional Application Development
SDI from a technological
perspective: Metadata
Arnold Bregt
Components
Technology
People
Policies
Spatial
Data
Standards
1
Experiment
Centrum voor Geo-informatie
Stsul.dat
0
1
5
10
75
.
.
0
0
0
0
0
.
.
20
15
35
45
30
.
.
Centrum voor Geo-informatie
Depth to the pyritic layer
4
Why describe spatial datasets?
Manage
Search
Exchange
Use
(storage and change)
(content global )
(format )
(content details, quality)
Centrum voor Geo-informatie
Target groups
Personal
(storage)
Own organisation
(storage and content)
Other organisations (content, format, quality,
contact person)
Centrum voor Geo-informatie
Extent description
Target groups
Functions
Personal
Manage Search Exchange Useuse
+
+
-
Own organisation
++
Other organisation
-
Centrum voor Geo-informatie
++
++
++
+++
+++
+++
How to describe ?
Personal standard
Organisational standard
(inter)national standards
Centrum voor Geo-informatie
Exercise Draft your own Metadata Standard
Draft your own Metadata Standard
9
International standards
America
Europe
ISO
(FGDC)
(CEN)
(ISO19115)
Centrum voor Geo-informatie
Metadata Standards
There are many
11
60
50
40
30
20
10
0
2000 April
2000 Dec.
2001 Dec.
at
io
na
l
(In
ho
us
e)
IS
O
-p
ro
je
ct
s
O
th
er
s
N
ZL
IC
AN
FG
D
C
C
2002 Dec.
EN
%
Standards for Meta-data
Centrum voor Geo-informatie
Metadata Standards
But the leading one is ISO 19115
13
INSPIRE
14
Metadata INSPIRE
Metadata INSPIRE
15
Metadata Standards
Profiles
16
17
18
Metadata implemantation
Profiles from ISO 19115
Implementation schema in XML (ISO 19139)
Software support (e.g. Geocat in Bennekom)
19
Latest version
ISO 19115-1: 2014
20
Evolution of standards
21
Conclusions
Describing spatial datasets with meta-data is
essential to keep the data accessible in the
future.
For (inter) national exchange the use of a
standard is a must.
A problem with describing metadata is that the
personal requirements are less than the
organisational requirements.
Centrum voor Geo-informatie
Questions
Thank you for your attention!
XML
XML = Extensible Markup Language
Standard of W3C
Both machine and human readable
Store data and exchange over the internet
24
Example
<?xml version="1.0" encoding="UTF-8"?>
- <note>
<to>Tove</to>
<from>Jani</from>
<heading>Reminder</heading>
<body>Don't forget me this weekend!</body>
</note>
25
XML presentation
26
XML is everywhere!
Word documents
Meta data (geonetwork)
Basis for GML, KML, CityGML , etc
27