ecuador ipums dublin workshop - Minnesota Population...
Transcript of ecuador ipums dublin workshop - Minnesota Population...
IPUMS DUBLINECUADORA t 20August, 20
Julio Ortega A.j t @ f [email protected]
Automated Process for theAutomated Process for the generation of Integrated
Geographical Units Series IGUS in EcuadorEcuador
Julio Ortega1, Carlos F. Mena2, Carolina Sampedro2, Francisco Yuigra3
1Centro de Estudios de la Población, Universidad San Francisco de Quito2Galapagos Science Center, Universidad San Francisco de Quito
3 C lt I d di t3 Consultor Independiente
IntroductionIntroduction
• The proposal of IPUMS is to start with the• The proposal of IPUMS is to start with themost recent avalaible census year (2001), tocreate geographic units of 20K populationcreate geographic units of 20K population. Those units are called IGUS IntegratedGeographic Units SeriesGeographic Units Series.
• We separate the procces in two parts:1. Scattered or rural area2. Urban area
World MapWorld Map
Map of SouthamericaMap of Southamerica
GEOGRAPHICAL COVERAGE OF POPULATION AND HOUSING CENSUS IN 2001
Research
HOUSING CENSUS IN 2001
Universe:
Population and housing throughout the country:
22 Provinces216 counties774 rural parishes
ADMINISTRATIVE POLITICAL DIVISION
Natural ProvincesRegions
Provinces
CountieshParishes
MANABI
CENSUS DIVISIONCENSUS DIVISION
• CENSUS SECTORSCENSUS SECTORS• CENSUS ZONES
S S• PARISHES• COUNTIES• PROVINCES• NATURAL REGIONSNATURAL REGIONS • COUNTRY
SCATTERED OR RURAL UNITS CENSUS
SCATTERED ZONES SCATTERED SECTORS
URBAN CENSUS UNITSURBAN ZONES URBAN SECTORS
Basic ProcessBasic Process
• Step 1: Identification of Sectors with highestStep 1: Identification of Sectors with highestnumber of people *seeds*
• Step 2: Define adjacent Sectors within GISStep 2: Define adjacent Sectors within GIS• Step 3: Merge to the seed with an adjacent sector with smaller population to create a newsector with smaller population to create a new larger sector.
• Repeat the process until the new sectorRepeat the process until the new sector achieve a total population of less than 20,000 inhabitants.
1. Scattered area(Rural area)1. Scattered area(Rural area)
• For the scattered area we first used theFor the scattered area we first used the political and administrative division at the parish, ie the lowest geographical level were parishes. We made the corresponding exercise with census zones and census sectors without bi ib i fa big contribution so we prefer to use
parishes. W h h IGUS f h d l• We show the IGUS for the scattered or rural area.
Census Sector
Process: The grouping of census sectors
Searching for “remnant sectors” that d t d 20k i h bit tdo not exceed 20k inhabitants
The Final Result: IGUs at the National Level
Optional Process: AdjustmentOptional Process: Adjustment
Minimum number of people that can support an IGUs – In Percent
Maximum number of people that can support an IGUs – In Percent
Activate AdjusmentProcess
Adjustment
Adjustment
2. Urban area2. Urban area
• For the urban area or block area due to theirFor the urban area or block area, due to their geographical density it was not possible to use parishes so it was used census sectors as unitsparishes so it was used census sectors as units of the lowest geographical level.
• We show the result of IGUS for the urban area• We show the result of IGUS for the urban area of principal cities from Ecuador.
Urban Census Sectors (Guayaquil)( y q )
IGUS Guayaquil
IGUS Quito
IGUS Cuenca
ConclusionConclusion• For rural areas, despite the existence of lower geographic
levels (census zones and census sectors) was enough to use parishes to use the DPA. But when building IGUS not necessarily all the parishes belong to the same canton.
The use of parishes as lower geographical units affects when creating new parishes because it should mend IGUS according to these creationsaccording to these creations.
For the urban areas, census sectors were used due to its high population density, and in the case of the way ofhigh population density, and in the case of the way of construction, not necessarily all of the IGUS census sectors, belongs to the same census zone.