title_header
Laboratory on Geoinformatics and Cartography
7. MAP COMPOSITIONS ON THE WEB, OGC WEB MAP CONTEXT

title_header
Laboratory on Geoinformatics and Cartography
•Article 11
•“View services making it possible, as a minimum, to display, navigate, zoom in/out, pan, or
overlay viewable spatial data sets and to display legend information and any relevant content of
metadata”
The only indirect remark in the directive

title_header
Laboratory on Geoinformatics and Cartography
•More detailed information in Article 14 “Portrayal”
•“1.   For the portrayal of spatial data sets using a view network service as specified in
Commission Regulation No 976/2009, the following shall be available:
–(a) the layers […] for the theme or themes the data set is related to;
–(b) for each layer at least a default portrayal style, with as a minimum an associated title and a
unique identifier.
•2.   For each layer […] defines the following:
–(a) a human readable title of the layer to be used for display in user interface;
–(b) the spatial object type(s) that constitute the content of the layer.”
Commission regulation No 1089/2010

title_header
Laboratory on Geoinformatics and Cartography
•The Commission Regulation No 1089/2010 describes the requirements for each theme
•
•
•
•
•
•
•Are you aware of the consequences?
Commission regulation No 1089/2010

title_header
Laboratory on Geoinformatics and Cartography
•1) If you are very lucky, like the HY theme
•
•
•
•
•
INSPIRE data specifications visualization

title_header
Laboratory on Geoinformatics and Cartography
•2) If you are a little bit lucky, like the TN theme
•
•
•
•
•
INSPIRE data specifications visualization

title_header
Laboratory on Geoinformatics and Cartography
•3) If you are not lucky at all, like the SR theme
•
•
•
•
•
INSPIRE data specifications visualization

title_header
Laboratory on Geoinformatics and Cartography
•Anyway, even if you are lucky, you may have such results
“Final“ visualization

title_header
Laboratory on Geoinformatics and Cartography
•Definition of portrayal for a specified content
–Defined on the level of layer
•The same possibilities as “traditional” cartography
–Bertin (1967)
–graphic variables
–
• A style may be
•  customized to the
• user’s needs
•
•
Definition of a cartographic style
point
line
polygon

title_header
Laboratory on Geoinformatics and Cartography
•<StyledLayerDescriptor version="1.0.0" xmlns="http://www.opengis.net/sld"
xmlns:ogc="http://www.opengis.net/ogc" xmlns:xlink="http://www.w3.org/1999/xlink"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.opengis.net/sld
http://schemas.opengis.net/sld/1.0.0/StyledLayerDescriptor.xsd">
•  <NamedLayer>
•    <Name>Hranice_VU</Name>
•    <UserStyle>
•     <Name>Hranice_VU</Name>
•       <Title>Hranice vojenského újezdu</Title>
•         <FeatureTypeStyle><Rule>
•           <PolygonSymbolizer>
•             <Fill>
•               <CssParameter name="fill">#dbc0da</CssParameter>
•               <CssParameter name="fill-opacity">0.1</CssParameter>
•              </Fill>
•              <Stroke>
•                <CssParameter name="stroke">#db8ad8</CssParameter>
•                <CssParameter name="stroke-width">2</CssParameter>
•              </Stroke>
•             </PolygonSymbolizer>
•           </Rule>
•         </FeatureTypeStyle>
•        </UserStyle>
•    </NamedLayer>
•</StyledLayerDescriptor>
•</StyledLayerDescriptor>
•
Definition of a cartographic style (SLD)
Style name
Testing style
Geometry
polygon
Fill (RGB)
#dbc0da
Opacity
0,1 (tj. 10%)
Outline
#db8ad8
Outline width
2 pixels

title_header
Laboratory on Geoinformatics and Cartography
Reaching cartographic interoperability

title_header
Laboratory on Geoinformatics and Cartography
server 1
klient
server 2
server 3
http://URL_adresa_serveru?SERVICE=WMS&version=1.1.1&REQUEST=GetMap&Layers=1&srs=EPSG:4326&BBOX=16.3
4, 49.22, 16.57, 49.93&WIDTH=701&HEIGHT=386&FORMAT=image/png &STYLES=style1
Reaching cartographic interoperability

title_header
Laboratory on Geoinformatics and Cartography
server 1
klient
server 2
server 3
http://URL_adresa_serveru?SERVICE=WMS&version=1.1.1&REQUEST=GetMap&Layers=1&srs=EPSG:4326&BBOX=16.3
4, 49.22, 16.57, 49.93&WIDTH=701&HEIGHT=386&FORMAT=image/png &STYLES=style2
Reaching cartographic interoperability

title_header
Laboratory on Geoinformatics and Cartography
server 1
klient
server 2
server 3
http://URL_adresa_serveru?SERVICE=WMS&version=1.1.1&REQUEST=GetMap&Layers=1&srs=EPSG:4326&BBOX=16.3
4, 49.22, 16.57, 49.93&WIDTH=701&HEIGHT=386&FORMAT=image/png &STYLES=style3
Reaching cartographic interoperability

title_header
Laboratory on Geoinformatics and Cartography
•OGC Web Map Context (WMC) implementation specification
–Latest version 1.1.0 since 2005
–Addition to the OGC WMS implementation specification
•Composes of:
–information about the server(s) providing layer(s) in the overall map
–the bounding box and map
–sufficient operational metadata for Client software to reproduce the map, and ancillary metadata
used to annotate or describe the maps
Map compositions
Sounds that similar to you?

title_header
Laboratory on Geoinformatics and Cartography
Map compositions
server 1
server 2
server 3
server 4
klient
Zakladni_mapa.png pozemni_komunikace.png elektrika.png podzemni_vody.png vegetace.png cela_mapa.png

title_header
Laboratory on Geoinformatics and Cartography
Map compositions
server 1
server 2
server 3
server 4
klient
Zakladni_mapa.png pozemni_komunikace.png elektrika.png podzemni_vody.png vegetace.png cela_mapa.png

title_header
Laboratory on Geoinformatics and Cartography
Saving a map composition…the easy way

title_header
Laboratory on Geoinformatics and Cartography
Map composition – the XML encoding

title_header
Laboratory on Geoinformatics and Cartography
•Some geoportals enable to search also for the map compositions…even if it is not explicitly
required under INSPIRE
Discovering map compositions