Transcript (bfc=0 or bfc=2) AND

Get More Out Of Your Web Map
Service with SLD
Styled Layer Descriptor for Complex
Symbology
Matthew Wechsler
Frank Hardisty – MGIS Advisor
Agenda
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Overview
Use Case
Problem
Proposal
Methodology
Results
Overview – SLD
XML Styling
Schema
Controls
Geospatial
Visualization
Extends WMS
Standard
Use Case – NAVAIR Now
SureTrak
• Client-Server
Intranet
• Simple
Symbology
DNC Maps
Air & Sea
Traffic
Monitoring
Use Case – NAVAIR Later
• Client-Server
Internet
• Robust
Symbology
WMS
SLD
Problem – Getting the most out of
SLD
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Can be Difficult
Almost always Tedious
Proposal – So now what?
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Complex symbology ruleset
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Apply SLD Standards to the ruleset
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Automate the process
Proposal – So now what?
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Complex symbology ruleset
VPF  DNC  GeoSym
Apply SLD Standards to the ruleset
Rules & Filters
Automate the process
mono C#
Methodology – Vector Product
Format (VPF)
The Data
The Support
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DNC
VMap
WVSPlus™
Etc.
GeoServer
ESRI
OGR
Etc.
Methodology – Vector Product
Format (VPF)
The Data
The Support
• DNC
• GeoServer
SLD
• OGR
Methodology – GeoSym
DNC + ? = SLD
Complex symbology ruleset
VPF  DNC  GeoSym
Methodology – GeoSym
Symbology Assignment Files
fullsym
color
attexp
code
graphics
simpsym
textchar
textjoin
textloc
textabbr
Methodology – GeoSym  fullsym
fullsym
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id
pid
delin
pointsym
linesym
areasym
labatt,
fcode
• txrowid
attexp
code
graphics
textjoin
Feature
Attribute
Methodology – GeoSym  Formula
fullsym
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id
pid
delin
pointsym
linesym
areasym
labatt,
fcode
• txrowid
pid = DNC
delin = line
fcode = BC030
idattexp
linesym
labatt  feature attribute containing label
txrowid  label rules
Methodology – GeoSym  Attribute
Expression File
fullsym
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id
pid
delin
pointsym
linesym
areasym
labatt,
fcode
• txrowid
attexp
code
• cond_index
• att
• oper
• = <> < > <= >=
• value
• connector
• None or AND and OR
Methodology – GeoSym 
Attribute Expression Interpretation
Connector
or
(bfc=0 or bfc=6 or bfc=10)
and
(wid>0 and wid<40)
Inside
Parentheses
Same Attribute
Methodology – GeoSym 
Attribute Expression Interpretation
Connector
Different Attributes
OR
bsc=2 OR bot=7
AND
bfc=0 AND hgt>50
Separate
Independent
Conditions
GeoSym – Attribute Expression
Interpretation
Connector
or
and
OR
Att
bfc
hwt
hwt
hwt
Oper Value Connector
=
7
AND
=
14
or
=
15
or
=
16
AND
bfc = 7 AND (hwt = 14 or hwt = 15 or hwt = 16)
Methodology – GeoSym  Text
Text Assignment Files
• Font, Size, Color
• Location
• Label Join
fullsym
• txrowid
textchar
textjoin
textloc
textabbr
Methodology – SLD
SLD profile of
the WMS
Implementation
Specification
1.1.0
Symbology
Encoding
Implementation
Specification
1.1.0
OpenGIS Filter
Encoding 2.0
Encoding
Standard
Extends WMS standard for geographic
feature symbolization
Defines styling rules
Defines filtering rules
Methodology – SLD  Symbology
Encoding
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FeatureTypeStyle XML element
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Rule XML elements
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Feature-property conditions
IF…THEN…ELSE
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Map Scales
1:500E6
1:4000
Methodology – SLD  Filter
Encoding
Logical Operators
<ogc:Or>
bfc=0 or bfc=6 or bfc=10
<ogc:And>
bfc=0 and hgt>50
Comparison Operators…
<ogc:PropertyIsEqualTo> <ogc:PropertyIsGreaterThan>
bfc=0 or bfc=6 or bfc=10
bfc=0 and hgt>50
Methodology – SLD  Application
to GeoSym
(bfc=0 or bfc=2) AND (hgt>0 and hgt<46)
<sld:Rule>
<ogc:Filter>
…
…
…
</ogc:Filter>
<sld:MaxScaleDenominator>
</sld:MaxScaleDenominator>
<sld:PointSymbolizer>
…
</sld:PointSymbolizer>
</sld:Rule>
<ogc:And>
<ogc:Or>
<ogc:PropertyIsEqualTo>
<ogc:PropertyName>bfc</ogc:PropertyName>
<ogc:Literal>0</ogc:Literal>
</ogc:PropertyIsEqualTo>
<ogc:PropertyIsEqualTo>
…
</ogc:PropertyIsEqualTo>
</ogc:Or>
<ogc:And>
<ogc:PropertyIsGreaterThan>
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</ogc:PropertyIsGreaterThan>
<ogc:PropertyIsLessThan>
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</ogc:PropertyIsLessThan>
</ogc:And>
</ogc:And>
Methodology – SLD  VPF (DNC)
SLD Automation
Automate the process
mono C#
The Results – DNC WMS Map
The Results – Good, Bad, Ugly
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What worked
(bfc=0 or bfc=2) AND (hgt>0 and hgt<46)
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What didn’t
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Next
mono C#
Thank You
Frank Hardisty – MGIS Advisor
Lonnie Hanekamp – Programmer
Penn State – MGIS University
CSC – Project Sponsor