The notion of 'Cadastral Management' is taken from QGIS
Project blog:Report back on
the 3rd QGIS Conference in Nødebo, Denmark, August 16, 2017, more specifically
the section on 'QIGS
as a cadastral management platform'. ESRI
similarly uses GIS for Cadastre Management.
The ambition of the following is to report on and later review the use
of free and open-source software applied for
Cadastral Management, primarily QGIS,
PostgreSQL, and PostGIS.
The interest in applying free and open-source software for cadastral
and land administration purposes is not new, cf. the publication: FLOSS
in Cadastre and Land Registration - Opportunities and Risks, by
Daniel Steudler, Mika-Petteri Törhönen and Gertrude Pieper,
April 2010, which among others refers to the 'Open Source Cadastral and
Registry (OSCAR) Tools Project', 2008 - 2011, and an analysis of FLOSS
Desktop GIS products by Gertrud Pieper. The development of the ISO
19152:2012 Land Administration Domain Model (LADM) was accompanied by
the development of a Social Tenure Domain Model (STDM), reflecting that
the various kinds of land tenure in informal settlements demands a more
flexible system for identifying and recording what compares to land
rights than provided by LADM. The 2010 publication reports on the
development of a STDM prototype based on open source tools. See below
on the present status.
A few lines of description and links refer to activities to be further
investigated. At the end, references and links are provided to similar
comparisons.
Social Tenure
Domain Model - A pro poor land information tool.
The
Global Land Tool Network (GLTN) facilitated by UN-Habitat has developed
a number ofLandTools,
which among others regardLand
Administration and Information.
The
need of a pro poor land information tool in terms of a Social Tenure
Domain Model (STDM) is motivated: ‘The STDM is a ‘specialization’ of
the ISO-approved LADM. ..’ ‘The concept of the Social Tenure Domain
Model is to .. .. provid[e] a standard for representing ‘people – land’
relationships independent of the level of formality, legality and
technical accuracy’(http://stdm.gltn.net).
STDM is built upon a platform of proven open source components
including PostgreSQL, PostGIS and QGIS. QGIS implements the GDAL/OGR
geospatial library which means that over 75 vector formats can be
imported into or exported from the STDM database. (https://stdm.gltn.net/for-developers/)
The Cadasta
Platform - QGIS Plugin
QGIS acts as an additional frontend for the Cadasta platform, allowing
users to manage projects and records and import existing data into the
platform.
QGIS users can build, analyze and create datasets which they can then
share through the Cadasta platform. The plugin also allows users to
download their existing datasets from Cadasta for further robust
analysis and reporting. Kartoza
built this plug in for Cadasta. (http://cadasta.org/platform/)
For our partners with more GIS experience, this is an excellent tool
for more advanced tasks, including:
The generation of advanced map reports with features including
filtering, color palettes, and the ability to create pdf documents with
specific templates;
A smooth data synchronization between QGIS and Cadasta projects;
and
The ability to import previously collected data that is stored in
shapefiles or other GIS formats.
With a public API, any partner can now build a third application to
perform the following tasks:
Manage user accounts and permissions;
Create, edit, and archive organizations and projects;
Manage location, party, relationship records and resources,
including retrieving and updating information;
In Switzerland, although the Federal Act
on Geoinformation of 2007 is a milestone in terms of
applying the model-driven approach for the NSDI, the law
itself was not enough to achieve the breakthrough of the modeling
language INTERLIS. A freely available ecosystem of tools, which
fulfills all the requested tasks of implementing the model-driven
approach, is needed.
These tools are now available as
FOSS solutions and can be deployed
and further enhanced if required, for any actual
implementation of the conceptual LADM. (Sec. 7)
All the [INTERLIS] tools are open source. However, they can be
integrated in a hybrid GIS environment (FOSSGIS and proprietary
solutions) without violating the open source licenses. An example of
its interplay can be seen, when it comes to the documentation of the
data model. The user can document all the classes and the
attributes in the UML/INTERLIS-Editor. These comments will be exported
in the conceptual INTERLIS data model. Ili2pg reads these comments from
the data model and writes them in the database when creating the schema
and tables. The QGIS plugin – as the last tool in this chain – will
show these comments in the layer properties. (Sec. 4.3)
The LADM Project Generator and Editing plugin for QGIS is a support
tool to generate and edit data according to the LADM model. This means
that the plugin will allow reading PostGIS data base schemas generated
from any INTERLIS based LADM model, and provides the appropriate forms
and data type widgets for the correct manipulation of data according to
the classes, attributes, data types, relations and constraints defined
in the model. (Sec. 4.2.5)
cf. also Kalogianni E., Dimopoulou E., van
Oosterom P. (2017) A 3D LADM Prototype Implementation in INTERLIS.
In: Abdul-Rahman A. (eds) Advances in 3D Geoinformation. Lecture Notes
in Geoinformation and Cartography. Springer, Cham
Funciones relativas a la Sede Electronica del Catastro (SEC) para QGIS
Functions related to the Spanish Cadastre Electronic Headquarters (SEC)
for QGIS.
The SEC4QGIS complement (SEC for QGIS) is a free tool based on free
software that allows
importing to QGIS the mapping downloaded from the
Cadastral Electronic Headquarters (SEC) in multiple formats
(FXCC of general plant, FXCC of more adjacent parcels, DXF area, and
plot GML),
to edit it graphically according to the fieldwork performed
by a technician (or a private individual), and
to export said mapping,
published in the GML INSPIRE form of cadastral parcel to obtain the
Graphical Validation Report Alternative (IVGA) of the SEC.
Version 1.0.5 of Nov. 6, 2017
Plugin home page: http://sec4qgis.tk
Manual (in Spanish):
https://github.com/yeahmike/sec4qgis/blob/master/help/ayuda.pdf
QGIS Python Plugins Repository:
https://plugins.qgis.org/plugins/SEC4QGIS/
Context:
https://www.slideshare.net/CarlosAlonsoPea/smart-successful-cadastral-new-tools-for-real-estate-registration-all-in-16-digits?
Proyecto
Modernización del Sector Forestal en Honduras – MOSEF
2.1 Activities carried out
The training strengthening task was developed in several stages, each
well defined in terms of the final objective. The main activities
consist of:
Training in the Python programming language for all Institutions.
Practical training for the AMHON staff in development on QGIS and use
of the modules of the Municipal SIT, with direct use of the system,
procedures, and to support the user's familiarity with the system.
User assistance, providing the extension of some concepts introduced
during the lessons and providing clarifications to the questions of the
users.
Classroom training for institutions handling databases other than
Postgres, use of Git repositories and modules of the Municipal SIT.
Quantum GIS (QGIS) software was used mainly to visualise and edit
GML-based open data sets and to connect the PostgreSQL 9.2 with the
PostGIS 2.0 extension that provides a database for sharing with
different users. GeoServer publishes these open data sets with OGC web
map services to the users. [In general,] Open source software tools
were used to test the data model for land-related applications. The
Humboldt Alignment Editor (HALE) (Reitz and Templer, 2011) was utilised
to produce Extract Transform Load (ETL) tools enabling data
transformation between source data sets and target data schemas (Horak
et al., 2011).
A QGIS plugin which helps users to import the french land registry
('cadastre') data into a database. It is meant to ease the use of the
data in QGIS by providing search tools and appropriate layer symbology.