workshop on census cartography and management, port-of-spain, trinidad and tobago, 22–26 oct 2007...

Workshop on Census Cartography and Management, Port-of-Spain, Trinidad and Tobago,22–26 Oct 2007

Results Generated from the questionnaire disseminated prior to the workshop


The objective of the questionnaire• To better understand census mapping activities at the country

level

• To support the development and management of the workshop and future activities

• To understand what technical training is needed on the use of GIS technologies for census mapping activities

• To invite discussion on country experiences with the goal of providing a forum for further collaboration on the effective use of spatial statistics technologies for producing and disseminating demographic data


Key Questions by Section of the Questionnaire

Institutional and Organizational Aspects (Part B)Q8.List the main tasks of the census mapping unit/division

responsible for census mapping.

Q9.Does the census mapping unit/division collaborate with other departments/divisions within the NSO?

Mapping Activities (Part C)Q18. Describe the current census mapping projects/activities.

Q19. Describe where the census mapping projects/activities are heading (plans to integrate new methods and technologies).

Q20.Is your NSO currently producing base maps for census mapping activities?



Mapping Issues (Part D)Q23.Has your NSO identified key issues for census mapping

activities that you are currently working on?Q24.List key issues you are working on.Q25.Can you identify any topics/issues of census mapping

activities for which data are lacking in your country (EA issues, geo-coding, etc.)?

Uses of GIS in Census Mapping (Part E)Q27.Does your Office/Organization have a GIS?Q28.Name the GIS software used in your Office/Organization.Q30.State major uses of GIS datasets in your Office/Organization



Collection and Compilation of Census Mapping Data (Part F)Q33.Is there a country initiative to improve the collection of census

mapping data (maps, images, vector/raster data) relevant for addressing census mapping issues through the use of GIS?

Q37.Does your country have a special method for the delineation of enumeration areas?

Q38. Briefly describe the method.

Presentation and Dissemination of Census Geography Data (Part G)

Q39. Does your NSO produce and disseminate census maps?

Training (Part H)Q42.Have you had any training in census mapping with GIS?Q44.Please list any expectations you have from the upcoming workshop so

that we may be able to address them?


# of

res

pond

ent

coun

trie

s

question number (from questionnaire)

UNSD Questionnaire on Census Geography Management: Global Scope of country

responses by question & section


Key Responses to Section on Institutional and Organizational Aspects (Part B)

• Almost all NSOs have a special unit responsible for census mapping with staffing ranging from 10’s to 100’s.

• The main tasks of the census mapping unit/division are the following:• Collect data from various census and surveys to generate tables at

different administrative levels.• Develop a database of information (not limited to census and

surveys) that can be geographically referenced.• Prepare base maps and EA maps for censuses and surveys• Update base maps and GIS information• Provide geographic information on enumeration areas for censuses

and surveys• Prepare and publish updated maps which include thematic and

statistical maps


Key Responses to Section on Institutional and Organizational Aspects (Part B)

• Close to all census mapping agencies collaborate regularly/occasionally with other departments & other NSOs or divisions within the NSO.

• Just over 50% of countries have statistical laws or laws governing the statistical production that explicitly deal with the production and/or dissemination of census data and/or maps.

• Many NSOs have groups of national users of census maps and spatial data, such as private and public institutions, to help identify core issues and data needs of users

• More than half the country respondents have a National Spatial Data Infrastructure, with several others proposed or in-the-works.


Key Responses to Section on Mapping Activities (Part C)

• Currently, most NSOs are heavily engaged census mapping projects/activities

• Most are integrating (or plan to integrate) new methods and technologies into census mapping activities

• More than half are currently producing base maps for census mapping activities

• Scales range largely from 1:1000 to 1:1,000,000 depending on the application (Country level, district level etc.)


Key Responses to Section on Mapping Issues (Part D)

• A summary of some the key issues for census mapping are:• Mapping of individual sites & specific areas (health/slums etc.) • Mapping of EAs and related issues (digitizing/coding/splitting)• Preparing and maintaining a spatial database of digital information

and associated attribute data• Using new technologies for census mapping operations• Preparing maps and databases for the operation of the census• Educating the NSO office of the importance of geographic data and

information• Acquiring better resolution imagery & increased GPS accuracy for

mapping operations• Improving training/recruiting staff in GIS & census mapping


Key Responses to Section on Mapping Issues (Part D)

• In identifying topics of census mapping for which data are lacking it was found that:

0

1

2

3

4

5

6

7

8

9

Data Available - InadequateResolution

Data Available- But Costly

Data Not Avail.- No Conc. Or

Meth. Dev.

Data Not Avail.No Funding to

Collect

Other (specify)

# of

res

pond

ents


Key Responses to Section on the Use of GIS in Census Mapping (Part E)

• Almost all NSO census mapping units have a GIS

• The main reasons GIS was introduced were:• To improve information

processing and quality of data collected

• To facilitate better decision-making.

• Increased request by data users.

To improve informationprocessing

To improve the quality ofthe data collected

Following receipt ofequip. and relevantsoftware

Request of data users

Better quality decisions

Optimized use offinancial resources

Others

To improve informationprocessing

To improve the quality ofthe data collected

Following receipt ofequip. and relevantsoftware

Request of data users

Better quality decisions

Optimized use offinancial resources

Others


Populatio

n Cen

sus

Household

Sur

veys

Health

Educatio

n

Others

Trade

Transp

ortatio

n

Tourism

Indus

try

Min

ing a

nd Ener

gy

Agricultu

re

Others

Land U

se

Wate

r qual

ity a

nd use

Fauna

and F

lora

Others

0

2

4

6

8

10

12

14

16 Demographic & Social Statistics

Economic Statistics

EnvironmentStatistics

# of

res

pons

es

Major uses by category and number of responses(Part E):


Key Responses to Section on the Use of GIS in Census Mapping (Part E)

• Major problems encountered in using GIS

0 2 4 6 8 10 12 14 16

Shortage of skilled staff

Cost of data collection or capture

Data source availability inadequate

Inadequate financial allocations

Software Compadibility

Hardware Reliability

Level of geographic detail at which data are collected

Incomplete data

Level of geographic detail from available sources

System user-friendliness

Lack of sources

# of respondents


Key Responses to Section on the Collection and Compilation of Census Mapping Data (Part F)

• Almost all country respondents have an initiative to improve the collection of census mapping data (maps, images, and vector/raster data) relevant for addressing census mapping issues through the use of GIS

• Many countries have special methods for the delineation of enumeration areas- several did not define a method

• Close to half of the country respondents have any initiative to improve the collection of data on topics of census mapping concerning mapping activities through geo-coding


Key Responses to Section on the Presentation and Dissemination of Census Geography Data (Part G)

• The majority of NSOs regularly produce and disseminate census maps (thematic, statistical, topographic, etc.)

• The remaining plan to produce and disseminate census maps

• Several countries refer to documents published online for widespread use


Key Responses to Section on Training (Part H)

• Just over half the respondent NSOs have had no training in census mapping with GIS either through workshops, formal/academic training, short and/or long term

• Several individually delegated respondents by country have had individual training

• Training of individual countries varies based on the level of GIS infrastructure use in census mapping activities


The expectations according to you (Part H)…

• All participants are interested in gaining knowledge -be it increased or initial- on mapping and analysis of population dynamics using GIS.

• This includes:• Managing and Using data in a GIS • Using this data to produce useful tools such as maps and

analysis outputs• Better understand the usefulness of new technologies

which include free and open source software applications as well as commercial software and hardware.• Several expressed the need for increased understanding of the

role of GPS in census-taking• Several touched on the need to better understand geo-coding,

EA delineation methods.


Results Generated from the questionnaire disseminated prior to the workshop:

Regional Workshop Synopsisfor the Caribbean


Key issues for census mapping activities that NSOs are currently contending with (Part D):

Bahamas• Obtaining GPS coordinates for all buildings and characteristics of use• Developing a GIS database• Enhancing the methodology for various GIS related proceduresCayman Islands• Mechanics related to the subdivision of parcel, block, and dwelling level

codingTrinidad and Tobago• Specific listing of EDs (or EAs) not in the labour force frame• Community recoding • ED updates and redrawing (new housing developments and ED

subdivisions)


Type of software used according to the Caribbean group (Part E):

According to the questionnaire responses, all of the countries that responded in the Caribbean reportedly use ESRI products (ArcInfo/ ArcGIS or both)


Some of the major uses of GIS datasets in NSOs (Part E)

44

22

1

23

23

23

0

311

0

Population CensusHousehold

HealthEducation

Others

TradeTourism

TransportationIndustry

Mining and EnergyAgriculture

Others

Land UseWater Quality and

Fauna and FloraOthers

# of respondents


Special methods for the delineation of enumeration areas (Part F):

Bahamas• Scale of coverage was at the dwelling unit level• EA delineation conducted based on the natural geographical

division of the country (islands) and then the political divisions of the islands into constituencies.

• Constituencies were used as supervisory districts and further delineated into EA districts of ~100 households.

• Delineation at the settlement level was done for all islands (except New Providence and Grand Bahamas, where political constituencies were used)



Belize• All ED data was produced manually on hardcopy maps.• EDs were chosen based on the number of households.

Grenada• Based on subdividing existing boundaries through parishes, a

grouping of approximately 125 households was deemed manageable for an enumerator to canvass



Trinidad and Tobago• The CSO developed the delineation of EDs from the 1960 Census

using 150-200 households as a proper Census workload • These have since been updated, re-coded and subdivided over

the years to accommodate a workload less than 200 households, and 100 households in squatting and terrain areas

• Work is progressing at a Community level on urban/rural classification at an ED level

• ED maps are drawn to graphical scale to accommodate 11’x17’ photocopying size


Training according to the Caribbean group (Part H):

• Staff from less than half of the respondent offices have had training in census mapping with GIS. Several of the respondents themselves have had training


Expectations according to the Caribbean group (Part H):

• Become informed about the role GIS and geospatial technologies (such as GPS) play in census mapping

• Learn how new technology can help to facilitate data collection and monitoring field activities

• Understand how to produce census data thematically and to provide census results visually in a GIS

• Learn more about ArcGIS and its use for census mapping and surveys• Learn how to harness the latest, most efficient and effective technology

and uses of GIS in census mapping• Assist other countries with their census mapping and GIS challenges


Expanded Country Discussion Welcomed

END

workshop on census cartography and management, port-of-spain, trinidad and tobago, 22–26 oct 2007...

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