Improving quality and added value of geo-statistical units
Ignacio Duque (National Statistical Institute, Spain)
Production and maintenance of geographical features of statistical units is a core task for National Statistical Institutes. The accurate boundaries of statistical units are also a mandatory task, because nobody outside NSI could make this work. But, despite its apparent simplicity, it is a tricky task, especially due to the close link with the troubled field of administrative boundaries, from Municipalities to Member States.
The presentation explains the aims and detailed sub-projects developed by the National Statistical Institute of Spain in this field, considering the institutional context, actors and the relationships with other agencies, mainly the Map and Cadastral agencies. The explanation of the goals achieved and remaining during the past five years could be a source of ideas that should be helpful for the statistical production in other contexts.
The first goal of Statistical Units updating is the maintenance of enumeration districts through time and the visualization of them by many tools and services. Nevertheless in the case of the Spanish Statistical System the boundaries of the other statistical set of units (the geographical “Nomenclátor”) is also considered. The “Nomenclátor” is little used, but still interesting for its century and a half record of infra-municipal disaggregation.
For enumeration districts updating the main tool is the use of edition utilities inside the viewer of Spatial Data Infrastructure. The work has been done by the appropriate experts of the 52 provincial offices of INE in recent years and the main results are presented: the tools implanted, the workload registered and the experience for improving these tasks.
The key point of the role of municipalities and other agencies as suppliers of different information in the process is explained, and many open questions arise around this subject.
The diffusion of geodata of statistical units inside and outside the statistical office is the final and very important stage of the project. WMS, WFS and others services are considered.
The metainformation about the intertemporal change of statistical units is a key added value of the process and a valuable information to the users outside the statistical office. The INSPIRE recommendations in this issue are not very detailed and a methodological proposal for the production of this information is explained.
Egyptian Experience in integrating statistical and geospatial information
Mennat Allah Anwar Ahmed Hashim (Central Agency for Public Mobilization and Statistics (CAPMAS), Egypt)
The Egyptian Central Agency for Public Mobilization and Statistics (CAPMAS) has made a lot of applications that express how statistical and geospatial information can be integrated and how it can be very useful in decision making.
One of these applications which has been recently published is "Egyptian rural Villages Survey" which shows state of the villages society in all its aspects and also the weaknesses and shortcomings of the existing services in this community as the priorities of the services required of this community, this application also produces different statistical and geospatial analysis that can support decision making in improving the standard of living of these villages.
Another application is the "Century Census" which takes us in a tour to see the history of the Egyptian censuses, starting from census 1882 till the last census in 2006.
Our preparation for the next census 2016/2017 which is based on using digital detailed maps with scale 1:500 covers all Urban and Rural regions, this digital maps will be uploaded on Tablets devices which will be used for the first time in Egypt for collecting the census data.
The next Egyptian census is considered to be a golden chance to spread and publish a new unique numbering and geocoding system for each unit in a dataset, such as a building, household or business based on National Grid system with coordinate system MTMWGS84 (Modify Transfer Mercator).
The next census will help us in accomplishing and fulfilling the five principles of Global Statistical Geospatial Framework which are:
- Use of authoritative geospatial infrastructure and geocoding.
- Geocoded unit record data in a data management environment.
- Common geographic boundaries for dissemination of statistics.
- Interoperable data and metadata standards.
- Common Accessible and usable geostatistical information.
CAPMAS also is going to disseminate all these applications and development steps on its Geospatial portal in the next few months.