Foss4 G Slides V3

Senegalese land register modernization through
OpenSource softwares.
The PAMOCA Project

Gérald Fenoy
gerald.fenoy@geolabs.fr

GeoLabs SARL

FOSS4G - 2008

The PAMOCA Project
What does the P.A.MO.CA means ?
Goals of this project what they get and what we provide
A brief history and overview of actors involved in this project
A brief presentation of the GeoLive VS platform used to implement the
whole solution
The way we use to achieve those goals : mixing OOCMS + MapJax
An overview of the OOCMS solution (an easy way to list, edit and output complexe documents)
Tables and listing of its content :
An overview of the templating system using Smarty + XML
Tuples creation, edition, supression and their references :
An overview of the process specifying how to edit fields through XML
and using the OpenOffice templating system to create customized
HTML forms
Tuples output as document :
An overview of the XML + OpenOffice templating system involved to
output complex documents

The PAMOCA Project
An overview of the MapJax solution to easily manage and display your GIS
data :
The concept of « project »
Creating a new project (one way to speed up the configuration of a new project)
Creating and using the OpenOffice templating system from MapJax
An automated way to deploy OGC webservices through MapServer
Producing a tiles cache using TileCache and automated creation of an
embeded win32 HTML Application (HTA) to dispay and query layers

Conclusion and perspectives

The PAMOCA Project
What does the P.A.MO.CA means ?

The P.A.MO.CA stand for (in french) :
Projet d'Appuis à la MOdernisation du Cadastre

Which could be translated by :

Support Project to Cadastre Modernization

The PAMOCA Project

The P.A.MO.CA project was started the year 2006 by the DGID (which
means Direction Général des Impôts et des Domaines = Executive Office of
taxes and fields).

The project funding was made by both :

the ADB (African Development Bank)

+

the European Community

The PAMOCA Project

a special group of DGID's experts was created to manage and pass
contracts with non gouvernemental companies specialized in the real
estate field. The director of this group was and still be : Mame Ounta FALL.

they chose the real estate experts agency called cabinet SADY & THIAM, a
company created in 1984, to handle and manage the first part of the
gouvernemental project which was called : the monograph of the
references buildings.

finally this part of the project started by the end of the year 2006.

by the end of the year 2007, the GeoLabs SARL was contracted by this
agency to implement a web-based solution of this monograph.

The PAMOCA Project

Since 2006 there was a lot of investigations made by the members of the
real estate experts agency to locate and investigate the most
representative houses and builldings in the whole Senegal country.

The investigations was made by 15 different senegalease specialists which
was first formed by Cherif THIAM during a couple of months.

The PAMOCA Project
The goals of this project (What they get and what we provide)

The material provided to make the investigations was pretty simple :

a 5 meter wire to take mesures,
an A3 printed paper with complexe arrays containing so many fields.
Some have to be filed during the investigation with relevant informations
like for exemple number of : parts, living room, rooms with area larger
than 9 m2 and so on, but some don't have to be filled,
a pen to fill the paper,
a printed map representing the location of the parcel,
a digital camera to take a picture of the frontage of the house or the
building.

The PAMOCA Project

The result of the investigations made was :

a partially filled investigation file,
a printed map of the parcel's location colored by hand,
a hand-made plan which was digitized using AutoCad™ by some other
specialists of the SADY & THIAM cabinet, 30 persons was contracted to
manage this task,
a picture of the frontage.

So at the begining we get at least 2 files usable “as-is” into the informations system :
the AutoCad™ plan and the picture !!

The PAMOCA Project
What we finally provide to manage data resulting of the investigations :
A GNU/Linux system we've called GeoLive VS 1.0, runing on two IBM X Series
servers to host the solution,
An ECM system called OOCMS to manage the results of the investigations made
and also for the futur ones
A Web-GIS solution called MapJax to manage GIS data and locating
investigations.
Both of this projects got a specific Trac system to handle source code, share ideas
and bug report available on :
http://geolive.cartography.st
http://oocms.cartography.st
http://www.mapjax.org/mapjax/

The PAMOCA Project
A brief presentation of the GeoLive VS platform used to implement the whole solution

At the beginning the GeoLive environment was a simple « chrootable » system
which was based on the Gentoo™ Linux distribution and which could be embeded
into every kind of already existing GNU/Linux system. It let us deployed our
solutions efficiently in the past for lot of our clients. It contains everything we have
to be installed for our applications to run. The idea of a chrootable system provided
its relevance so we keep this in place and make it evolve over the versions of the
main free softwares we used.
For another project, we had to provide the same kind of solution but including also
the host system, so we decided to use the Gentoo™ VirtualServer solution.
Then on this first base (installed on two IBM X Series servers) we've created our
solution that we called GeoLive VS 1.0 which run since some time and prove its
stability.

The PAMOCA Project
A brief presentation of the GeoLive VS platform used to implement the whole solution

As we already get a system and an architecture on which it ran well since
some time we decided with the PAMOCA direction and the SADY & THIAM
cabinet to buy two IBM X Series servers, one for the development phase
and the agency activity and another one for the integration into the DGID
network.

This way to deploy our solution and OS softwares required we only have to
synchronize the new servers from the development server to the new one.

The PAMOCA Project
The way we use to achieve those goals : coupling OOCMS + MapJax

In the past GeoLabs based lot of their solutions on two products which are :

OOCMS : used when we have to create informations systems to manage
documents production or flow of data where some different people could
interact each other in the edition process
and
MapJax : used as a base solution to easily create our own specific GIS
applications.
Both of this softwares use the MetaJS library which is available on GoogleCode.

The PAMOCA Project
An overview of the OOCMS solution (an easy way to list, edit and output complexe documents)

OOCMS is a web application, implemented in PHP, which let you
manage and produce complex documents on the fly through an
OpenOffice server. The web application communicate with this server
using the U.N.O API (Universal Network Object) and more precisely its
Python implementation.

Data was stored in a PostgreSQL/MySQL database.

As the “GIS data awareness” of OOCMS is brand new, it was only
implemented for PostGIS currently (so to manage both your GIS data
and standard ones you have to use a PostgreSQL database).

The PAMOCA Project
Tables and listing of its content

PostgreSQL tables could be made available to any group of users of an OOCMS
application. This way users, depending on their rights affected to their group,
could made creation, modifications, suppression and production of documents.
To make a table available to the application's users, you have to create a
directory with the same name as the table into the docs/local/tables/ path of
the OOCMS intallation, create an XML files to configure what informations the
system have to display to the users from the data stored in the table. Here you
are able to use any kind of SQL statement or php code you need.
Then you have to write or use the default Smarty template which let you tell the
system how the « listing view » have to be displayed.

The PAMOCA Project
An overview of the templating system using Smarty + XML

+ a table to display

An XML file to set what to display
+

The Resulting « Listing View » in action

A Smarty template to set how to display
(XHTML+PHP)

The PAMOCA Project
Tuples creation, edition and their references

When you want to grant the write access to a specific group of users you
have to create a workflow.xml file. In this file you tell the system who could edit
what and when. So there is an XML block for each step containing the group
and each field which could be filed.

After creating this XML file you have to create an OpenOffice template which
will be used to display the HTML form to the end user. We provide an
administration interface to integrate such templates into the system.

So, in the workflow.xml file you have to set for each step :

What have to be edited and what kind of field it is.
Which group have the rights to edit.
Which OpenOffice template to use to display the HTML form to the end
user.

The PAMOCA Project

The workflow.xml file

The PAMOCA Project

The OpenOffice template

The PAMOCA Project

The HTML form produced

The PAMOCA Project
Tuples creation, edition and the same for their references

The workflow.xml file with only
the step 6 block displayed

The PAMOCA Project


OpenOffice template used to produce the HTML form on step 6

The PAMOCA Project


OpenOffice template
used to produce the HTML form The resulting edition HTML form
on step 6 produced by the OOCMS application

The PAMOCA Project

...

...
OpenOffice template OpenOffice template
for step 1 for step 6
The resulting edition HTML form
produced by the OOCMS application

The PAMOCA Project
Tuples output as documents

Everytime you update an entry in a table, there is a trigger which inform the
system that it have to produce a new document. So in some sens we maintain
a cache of produced document.

As before, to be able to output a full filled document you only have to create
an XML file and its associated OpenOffice template to specify what you want to
display in your restitution document.

The PAMOCA Project

The output.xml file

The PAMOCA Project

The OpenOffice Template

The PAMOCA Project

The produced document

The PAMOCA Project
An overview of the MapJax solution to easily manage and display your GIS data

MapJax is a Web-GIS solution easy to deploy. It provides lot of functionalities :
integrating your data in a PostGIS database, metadata edition, deploying WMS/WFS
webservices on demand (through MapServer), create/edit/delete layers, create
different cache of tiles (using tilecache) to use in an automaticaly produced HTA
application, upload your own OpenOffice template to output map in PDF or other
formats supported by OpenOffice and more ...

The PAMOCA Project
The concept of « project »

A MapJax project is an instance of the web interface. It contains the layers
definition, datasources, symbols, fonts, legend, list of users able to access the
application, its own OpenOffice templates, keymap, spatial queries definitions
the web application have to provide and so on ...

From a PostgreSQL point of view a project is also a schema (namepace).

For the PAMOCA project, data provided by the DGID was in ShapeFile format.
For each cities where investigations took place, the data were structured like
this :

Buildings
Parcels
Cadastral sections
Roads

The PAMOCA Project
Creating a new project (one way to speed up the configuration of a new projects)
We decided to create a project for each investigated cities...
As I told you, data was allready structured by cities and we get the same kind of data
for each ones. We had to find a way to easily create a new project based on an already
existing one.
That what we called the « project cloning » system which let you keep the same layers
definitions, keymap, metadata, legend, templates, activated webservices as an other
project.
So you create a new project telling that you want to use another one as the source for
the creation and you will only have to load your data in the project directory, load them
in the PostGIS database, correct some metadata (at least the city name) and your new
project is ready to use.
Thanks to this way to create project for the 20 main cities investigated we spent only
one day.

The PAMOCA Project
Creating and using the OpenOffice templating system from MapJax
Using the same idea as in OOCMS itself you could also use the same kind of templating
system.

To be able to produce an output document which contains the map, the legend, the keymap
and scalebar you only have to as anybody make a document with the well named pictures in.
Their names should be :

[_mainmap_] for the main map picture,
[_keymap_],
[_legend_],
[_scalebar_].

This way everybody is able to create its own output document, with its own style.

This sounds really more efficient than using some libs like for exemple fpdf or pdflib ....

The PAMOCA Project
An automated way to deploy OGC webservices through MapServer

To deploy WMS and WFS webservices you only have to check a box in the layer
properties edition dialog from the administration interface to tell MapJax that
you want to share this layers through the specified webservice (WMS or WFS
currently).

Then when you update the project, relevant mapfiles are created for you with
the layers you've specified and webservices are available through the web to
share your data in a standard way.

The PAMOCA Project
Producing a cache of tiles using TileCache and automated creation of an embeded win32 HTML Application (HTA) to
dispay and query layers

The last innovative thing is that MapJax could produce an HTA.
From a MapJax project you could produce a cache of tiles to use in GoogleMap.
MapJax simply use TileCache to do that.
When the creation of the cache is over, MapJax make you able to easily produce a zip
file which contains the produced cache and an HTML Application based on the
GoogleMap™ API which will use this cache to display your data stored localy.
You only have to unzip the package and click on the HTA file to be able to view your data
without having to put the data on the web.
Recently we also add the capability to query one layer using the Python Mapscript API.
The only limitation at this level is that you have to include the ShapeFile containing your
data to query into

The PAMOCA Project

So MapJax was used in this project to integrate the provided GIS data.

At the final step of the edition process people granted could then link a parcel
to an investigation and update the GIS data inserting a foreign key to an
investigation.

This way, the DGID is able to know where is the parcel from the OOCMS « liting
view » or query from MapJax to get more informations on the parcel or even
download the investigation document.

The PAMOCA Project
First of all, the investigations made should let us simplify a bit more the
investigation and the edition process. To achieve this, more investigations has allready
been started and will continue in the next months to get more and more data in the
database. Using some datamining methods we will try to extract relevant informations
from the references buildings to make the next investigations easier.
Formations had took and will take place in Senegal and at the GeoLabs office to
learn the Senegaleases administrators of the application how they could maintain this
application and how they could easily deploy such applications for other kind of needs.
GeoLabs collaborates with the Senegalease GIS national association called ASIGEO
to provide them a web platform to share their knowledge and make e-learning
formations available through the same platform. The first formation which will be
available was about PostGIS.

The PAMOCA Project

The main people involved in this project (Gérald Fenoy et Chérif Thiam) have
created a new society in august 2008 which was called :

GMC Intenational Consulting.

This society give us the opportunity to export, with the help of the ADB and the
European community, the same kind of solution which was made for the
Senegalease contry to the others african ones.

The PAMOCA Project

Any questions ?

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