Co-funded by the

Community programme

eContentplus

WP7 technical meeting

Manolis Viennas, External Partner

GEORAMA Patras, Greece

12.-13. September 2011

GEORAMA

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Patras, Greece

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GEORAMA Contribution

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Hardware and Software

Server • virtual machine

• one processor 2 GHz

• 6 GB of RAM

Software • Windows Server 2008 64bit

• Tomcat 6.0.29 dedicated web server

• PostgreSQL Database Server

notice that the component is fully cross-platform

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7.1 - Metadata Deployment

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GEORAMA-Content Provider

• Existing metadata are copy of original data

provider data descriptions without changes

since Georama is no data owner.

• Initial datasets have been retrieved from

geodata.gov.gr

• Georama supports and re-distributes the

whole datasets through its own facilities and

infrastructure acquired for the Plan4All

project – plan4all.georama.org.gr 6

Metadata Portal Solutions

• local implementation

• OGC compliant

• SDI infrastructure based entirely on

open source software

• metadata portal solution: Geonetwork

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Catalogue Services

• Catalogue services: Geonetwork

• allow creation, editing and search of metadata

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Metadata Editing

Metadata storage is automatically kept by Geonetwork in the PostgreSQL 9

Metadata Search/Download

Interactive search/download: besides the consultation via CSW protocol, it is

possible to do an interactive direct search through the GeoNetwork web

interface, which allows also metadata download as PDF or XML. 10

Metadata Web Services

CWS: http://plan4all.georama.org.gr/geonetwork/srv/en/csw

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plan4all.eu/catalogue/ - georama csw

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Metadata - Thesaurus

• There is currently no thesaurus supporting

multilingual discovery of data

• In meta-data system used GEMET thesaurus

and to extend search and identify capabilities

added keywords in local language

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7.2 – Data Deployment

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Source Data

• Source data: Corine Land Cover 2000 for

the whole Greece, which have been

finalized and updated constantly since 2004

by the Greek organization for cadastre and

chartography (www.okxe.gr). Data are

produced according Corine Land Cover

mapping requirements..

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Source Data (2)

• Source data come from geodata.org.gr

and reproduced through Georama’s map

services

• ESRI Shapefile format

• Greek Grid GCS_GGRS_1987 projection

• The harmonisation process is built up on

the source data in the ESRI Shapefile

format. This file contains all important data

regarding land cover specification.

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Scheme

The base structure of the source data is presented

in the table. Originally the field are described

according CLC standard.

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Features and Code Lists

The table describe source data features, attributes and code

lists important for data transformation and harmonisation

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Transformation Method

• Main tasks in transformation are simple manipulations with

attribute data and geometries.

• Actions are performed using ArcMap GIS software

(of course they can be performed using any other GIS

application completely or some parts from described process

steps)

Steps using ArcMap SW toolbox scripts:

1. Dissolve neighbour geometries with equal Corine Land Cover

codes (action is performed just for security reasons, such

cases in dataset should not be); During the transformation this

fact is verified

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Transformation Method (2)

ArcMap SW showing

clc properties

including corine

Greek text

description for

categories 20

Transformation Method (3)

Verifying that all

polygons are

dissolved according

to corine area codes

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Spatial transformation process

The spatial transformation are also needed due to the

fact that Greece holds all its data in a projected

Greek Grid format (GCS_GGRS_1987 ) which

required the following steps in order to be converted

to the final required projection:

1. Reprojecting to WGS84: EPSG: 36233;

2. Colour schemes are lost in the transition and need

to be recreated in the geoserver.

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Transformation Scheme

Transformed shape file for corine Greece 23

Publication-Web Map Client

• The data publication is performed using Geoportal System

provided functionality:

• Search: search of data and metadata using Micka

metadata solution

• OGC services: CWS, WMS, WFS, WCS.

• Downloads: data file download, via HTTP, to use with local

applications.

• The data has been published in the WGS84 system

• As desktop client can be used any application able to use

OGC WMS, WFS or CSW services like ArcMap SW, gvSIG,

QuantumGIS, Open JUMP, uDig and other

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Publication-Web Map Client

The harmonised data is published in a simple web map

application at http://plan4all.georama.org.gr

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Publication - Web Services

• WMS 1.1.1 -

http://plan4all.georama.org.gr/geoserver/ows?servic

e=wms&version=1.1.1&request=GetCapabilities

• WFS 1.1.1 -

http://plan4all.georama.org.gr/geoserver/ows?servic

e=wfs&version=1.1.0&request=GetCapabilities

• All web services are available in

http://plan4all.georama.org.gr/geoserver

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plan4all.eu/map – georama wms

Example of WMS (General land Use layer) service

connection using Plan4all portal map client:

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Results

• Comments on Conceptual Models

• Model is well understandable because is similar to

Corine Land Cover that is well known and accessible

for reference.

• Recommended changes

• Multilingual code translation of corine areas has to be

further investigated

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•8.3 – Validation of platform

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Validation - Task 8.3

Currently Working:

• First V&V Report

• List of potential users

• List of actual/planned capabilities

Task 8.3 Validation of platform - Declaration of Inputs

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Thank You

Contact us at:

plan4all@georama.org.gr

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