Geographic Digital Content Components André Santanchè Advisor: Dr. Claudia Bauzer Medeiros...

Geographic Digital Content Components

André Santanchè

Advisor: Dr. Claudia Bauzer Medeiros

Database Group

Unicamp - Brazil

Summary

• Goal

• Reuse and Interoperability

• Digital Content Component– Previous Work– Digital Content Component Model– Geo Component

• Project with Digital Content Components

• Concluding Remarks

Overview

• Goal: Support reuse of GIS Projects

• GIS Project: A collection of related data pieces (e.g., maps, graphs or tables), composed and processed in a specific sequence by software components.

Reuse and Interoperability

• Reuse and interoperability are closely related dimensions, since the increase in interoperability expands the opportunities to reuse.

• Current approaches:– open standards for GIS data representation;– open standards for GIS process

interoperability.

GIS data representation

• GeoTIFF – based on the popular TIFF format – embeds georeferencing capabilities in the image file.

• ESRI Shapefile – format is a standard for vector data.

Class NameLV Latossolo VermelhoPV Argilossolo VermelhoPVA Argilossolo Vermelho-AmareloCX Cambissolo HáplicoCX Cambissolo HáplicoCX Cambissolo HáplicoGX Gleissolo HáplicoLVA Latossolo Vermelho-Amarelo

shx

shp

polygonal shapes in a map

Index of shapes shapes

attributevalues

GIS process interoperability

• Open GIS Consortium (OGC) defines:– Geography Markup Language (GML) – XML

based language to enable data interoperability.– OGC Web Services (OWS) – architecture that

uses Web Services technology to enable inter-process interoperability.

• Interoperability promotes a component-based software development approach.

Problem

• If a user wants to share an entire project he could face two problems:– How to enable systematic access the same

collection of components used to develop it?– How to represent the relationship between

different kinds of data objects, managed by distinct specialized software components?

Our Proposal

• A “glue” to integrate reuse and interoperability standards in an unified project. It involves:– a homogeneous model to represent any

piece of GIS data and software component Digital Content Component.

– a mechanism to connect Digital Content Components in a project.

Digital Content Component• Can encapsulate any kind of digital data: program

code, raster data, vectorial images, tables, etc.

• Based in a previous project – Anima.

Digital Content

Component

Software Component

Image

Table


MagicHouse

Previous ProjectAnima

AnimaFramework

Magic House is an authoring tool for building educational applications based on composition of software components.

A frameworkused by

Magic House.

MagicHouse

Previous ProjectAnima

AnimaFramework

Uses Web standards (XML, XSL, RDF and OWL) to allow the interoperability of educational applications.

• Digital content component: extend benefits of packaging, deployment and composition to any kind of digital content.

• Component management: allow proper storage, search and retrieval of components.

Extensions of Anima

Digital Content ComponentProduction/Use Cycle

Language Y context

Language X context

User

Packager

Spreadsheet

Software

Packager

WorkflowRuntimeEngine

User / Developer

Retrieved Content Components

ComponentRepositoryManager

Composition Tool

WorkflowRuntimeEngine

Execution

Software Developer

Software Development Tool

Packager

GIS program


WOODSS

Packager

Class NameLV Latossolo VermelhoPV Argilossolo VermelhoPVA Argilossolo Vermelho-AmareloCX Cambissolo HáplicoCX Cambissolo HáplicoCX Cambissolo HáplicoGX Gleissolo HáplicoLVA Latossolo Vermelho-Amarelo GIS program


Software Developer

Software Development Tool

Packager

Software


Inside Geo Component

Structure (XML)

Metadata (OWL)

Soil Map of São Paulotitle

taxonomy Soil Map

Interface (OWL-S)

getMap

image

taxonomy

SHP image

São PauloSoil Map

parameterType

hasOutput

map

value

São Paulo SoilAttribute

hasOutput

stringparameterType

attr

taxonomy

getAttr

hasInput

index integer

parameterType

label string

parameterType

shxshp


x

x

x

x

Inside Geo Component

Structure (XML)

Metadata (OWL)

Soil Map of São Paulotitle

taxonomy Soil Map

Interface (OWL-S)

getMap

image

taxonomy

SHP image

São PauloSoil Map

parameterType

hasOutput

map

value

São Paulo SoilAttribute

hasOutput

stringparameterType

attr

taxonomy

getAttr

hasInput

index integer

parameterType

label string

parameterType

shxshp


x

x

x

x

São PauloSoil Map

subClassOf

DataProduct

Map

SWEET – DataEarthRealm

SolidEarthLayer

subClassOf

LithosphereLayer

subClassOf

subClassOf

CrustLayer

subClassOf

SoilLayer

LandSurfaceLayer

subClassOf

SWEET – EarthRealm

Brazil

Center-South

São Paulo

partOf

partOf

POESIA

coverage

type

evaluate

• Workflow based Decision Support System developed at UNICAMP for environmental planning, now being used in agriculture planning.

WOODSS

User

GIS program


Data

workflow

WOODSS


Pedological Zoning for Coffee Crop

Zoning Workflow

São Paulo Soil Map Shapefile and Attributes

shxshp

shx

shp

result

result

dbf

Class SuitabilityCLS1 GoodCLS2 GoodCLS3 IneptCLS4 GoodCLS5 IneptCLS6 IneptCLS7 GoodCLS8 Good

Coffee Soil Suitability Ranking Spreadsheet

A B1 Texture argillaceous2 Relief smooth3 Fertility low4 Soil depth v. deep5 Drainage high67 Aptitude good

dbf

Class Name SymbolLV Latossolo Vermelho +LV32PV Argilossolo Vermelho PV3PVA Argilossolo Vermelho-Amarelo PVA80

Concluding Remarks• This project presents a solution for data and

program code reuse to face the proliferation of geographic data formats and software tools.

• The main contribution is a homogeneous model to deal with software components and data objects in the geo-information processing domain.

• The work combines two previous experiences: Anima and WOODSS.

AnimaProduction/Use Cycle

SoftwareDeveloper

User / Developer

Retrieved Anima Components

File System

CompositionTool

Execution

Software

Software

Software

Software

Software

Software

SoftwareDevelopment Tool

PackagerSoftware

SoftwareDeveloper

SoftwareDevelopment Tool

PackagerSoftware

AnimaComponentsLanguage X context

Language Y context

Categories of Components

• We differentiate between two kinds of component:– process components;– passive components.

Process Components• Encapsulates any kind of process description

(sequences of instructions or plans) that can be executed by a computer.

Metadata

outputdata

inputdataw orkflow

workflow

Orig inCreation Date

outputform at

inputXM L schema

XS Lsheet

< =" ">< =" ">< =" "> <

=" "/> </ > </ ></ >< ></ ><

=" "/>

param xsl:attribute xsl:for-each xsl:call-template

xsl:for-eachxsl:attributeparam

xsl:textxsl:text

xsl:apply-templates

namename

select

name

select

objetosvalue//object

enumeraObjetos

//object

instructions (XSL)

• Contain data that can be used by a process component.

Passive Components

OriginCreation Date

<topico> <titulo>Elaboração</titulo> <subtopico> <titulo>Análise</titulo> Será realizada uma pesquisa DTDs do XML tal como o CML, </subtopico> <subtopico> <titulo>Concepção</titulo> A partir da análise do item uma proposta de DTD voltada </subtopico>

XM Ldocum ent

XM L docum ent

outputXM L schema

AuthorTitle

G IFim age

image

bitmap imageGIF format

• Components can be combined into more complex components.

• This can be done repeatedly/recursively.

Combining and Composing Components

OriginCreation Date


< =" ">< =" ">< =" "> <

=" "/> </ > </ ></ >< ></ ><

=" "/>


xsl:for-eachxsl:attributeparam

xsl:textxsl:text

xsl:apply-templates

namename

select

name

select


enumeraObjetos

//object

sheet (XS L)

docum ent (X M L)docum ent

X M L

X SL

OriginCreation D ate

northeast(S VG )

southeast(S VG )

south (S VG )

north (SV G )

centro-w est(SVG )

im age

S VG

S VG

S VG

S VG

S VG

“Componentizing” WOODSSsecond approach

Execution

G IS SystemPurpose

m ap

m ap

w orkflow

X M Ldoc.

map

rainfall data

workflow


AuthorTitle

b itm apim age

m ap

m ap im agebitmap format

“Componentizing” WOODSSfirst approach



XM Ldocum ent

Rainfall Data

outputXM L schem a

Metadata

m apim age

w orkflow

W O ODSS workflow

m ap im agerainfall data

Execution

Using Components Example• In Content Engineering, the single-sourcing practice is

usual, where the same source can be presented on many output formats.

e

plates

bjetos

ct

1. Elaboração

,

1.1. Análise

1.2. Concepção

2.1. Seleção

S erá realizada uma pesquisaDTDs do XML tal como o CML

A partir da anális e do itemuma proposta de DTD voltada

S erão pesquisados na Web quais para a linguagem XML.

2. Con strução

Report

Map plot

O riginCreation Date


XM Ldocum ent

Superm arket L ist

outputXM L schema


PDFform at

inputXM L schema

XS Lsheet

< =" ">< =" ">< =" "> <

=" "/> </ > </ ></ >< ></ ><

=" "/>


xsl:for-eachxsl:attributeparamxsl:textxsl:textxsl:apply-templates

namenameselect

name

select


enumeraObjetos

//object

XSL - Report


SVGform at

inputXM L schema

XS Lsheet

< =" ">< =" ">< =" "> <

=" "/> </ > </ ></ >< ></ ><

=" "/>


xsl:for-eachxsl:attributeparamxsl:textxsl:textxsl:apply-templates

namenameselect

name

select


enumeraObjetos

//object

XSL - M ap

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