fastpowerfulfree

OnTheMapYes, the data are complex.

Matthew GrahamGeographer

Center for Economics StudiesU.S. Census Bureau

mappingsimpleconvenientweb-basedfreemappingsimpleconvenientweb-basedYes, we have atool for that.

fastfastpowerfulpowerfulfreemappingsimpleconvenientweb-basedreally cool

An Administrative Data Product

• Longitudinal Employer-Household Dynamics (LEHD) Program

• Partnership with States• Combined existing administrative data and

census/survey data to produce new knowledge about jobs, firms, and workers.

Data Infrastructure

• Very large dataset:– 130 million jobs each quarter– About 94% of US jobs

• Cutting edge confidentiality protection approved by the Census Bureau’s Disclosure Review Board– Noise Infusion– Imputation– Synthetic Data Methods

LEHD’s Public-Use Data Products

• Quarterly Workforce Indicators (QWI)– 30 job-based indicators (e.g. New Hires)– State, county, metropolitan/micropolitan areas– Age, ownership, race, ethnicity, education, industry, firm

age, firm size breaks• LEHD Origin-Destination Employment Statistics (LODES)

– Home-Work relationships– Census block-based (11.1 million census blocks)– Age, ownership, earnings, industry, sex, race, ethnicity,

education

OnTheMap

• A free, online, mapping tool for analyzing the LODES data.

• Basic Goals:– Promote the use of the LODES data– Promote exploration of the data’s spatial

dimensions– Create a simple, easy-to-use interface– Show results (maps, tables, visualizations) that

provide insight on economic questions.

Motivations

• The idea is to enable users to manipulate the data in a way that allows them to ask questions and answer them and then promote the asking of new questions.

• We want users to be able to view the data from many different frames of reference in order to generate new insights.

Base Map

Country

State

Tract

Blockgroup

Block

Area Pop. Density [persons/acre]

US 0.137Area Pop. Density

[persons/acre]

DC 15.4

Tract IDPopulation

Density [persons/acre]

11001002201 33.6

11001002202 18.0

11001002301 29.2

11001002302 4.1

11001002400 26.3

11001002501 19.0

11001002502 40.0

11001002600 4.1

11001002701 46.9

11001002702 43.3

11001002801 88.8

11001002802 75.3

11001002900 53.1

11001003000 65.6

11001003100 39.6

11001003200 44.7

11001003301 29.4

11001003302 43.5

11001003400 19.2

11001003500 39.6

11001003600 55.7

11001003700 79.6

11001003800 52.5

11001003900 47.6

11001004001 55.9

11001004002 57.7

11001004100 13.9

11001004201 66.1

11001004202 53.8

11001004300 55.7

11001004400 35.5

11001004600 28.0

11001004801 27.3

11001004802 41.0

11001004901 31.1

11001004902 41.3

11001010100 18.3

11001005301 71.4

11001010700 8.3

11001005600 58.4

11001010800 39.2

11001005800 12.6

11001005900 18.8

11001006400 12.6

11001010200 7.6

11001000300 24.7

11001006202 0.0

11001011000 23.3

11001006500 20.6

11001006700 35.7

11001006600 26.1

11001007000 27.1

11001006801 32.1

11001006802 30.0

11001006804 9.6

11001006900 21.5

11001007403 35.5

11001007100 19.9

11001007200 8.3

11001007301 2.7

11001007304 11.6

11001007401 8.1

11001007404 16.6

11001007406 33.5

11001007407 17.1

11001007408 32.2

11001007409 35.6

11001007502 29.8

11001007503 19.6

11001007504 12.5

11001007601 15.9

11001007603 13.3

11001007604 10.8

11001007605 30.7

11001007703 20.8

11001007707 18.6

11001007708 13.7

11001008301 30.3

11001008302 34.2

11001008402 32.4

11001008410 27.4

11001010600 12.9

11001008701 25.3

11001008702 13.6

11001008802 35.3

11001008803 7.2

11001009904 21.4

11001009905 26.1

11001009906 21.2

11001009907 24.6

11001005500 43.0

11001005002 104.3

11001005001 38.6

11001004701 50.2

11001004702 22.5

11001008804 12.4

11001008903 35.6

11001008904 29.3

11001011100 3.4

11001009801 14.8

11001009201 12.5

11001009811 37.8

11001009810 25.5

11001009102 9.1

11001009204 34.1

11001009203 17.8

11001009400 10.6

11001009301 11.5

11001009302 11.9

11001009501 14.7

11001009503 8.3

11001009505 10.2

11001009507 20.4

11001010500 18.3

11001007709 9.6

11001007803 13.3

11001007804 16.5

11001007807 16.5

11001007808 15.6

11001000702 46.5

11001009504 11.9

11001007806 13.8

11001000100 10.6

11001000201 29.2

11001000202 27.3

11001000400 3.8

11001000501 14.5

11001009508 14.1

11001009509 18.6

11001009601 5.2

11001009602 12.5

11001009603 21.4

11001009604 16.4

11001009700 31.9

11001009803 21.0

11001000502 22.2

11001000600 12.7

11001000701 34.0

11001005201 72.4

11001000801 9.3

11001000802 7.1

11001000901 9.8

11001000902 4.5

11001001001 12.3

11001001002 15.7

11001001100 11.5

11001001200 16.6

11001001301 5.6

11001001302 17.4

11001001401 15.8

11001001402 13.6

11001001500 5.1

11001001600 6.0

11001001702 11.4

11001007809 22.1

11001008100 40.3

11001007901 38.8

11001007903 29.6

11001008001 34.6

11001008002 21.2

11001009000 7.8

11001008200 34.7

11001010300 11.9

11001001803 12.5

11001001804 30.1

11001001901 21.1

11001001902 9.0

11001002001 15.0

11001002002 18.2

11001002101 35.7

11001002102 25.9

11001009804 19.3

11001009807 12.0

11001010900 5.5

11001010400 6.5

11001009802 34.1

11001009901 4.3

11001009902 9.1

11001009903 19.9

WardArea Pop. Density

[persons/acre]

Ward 1 44.1

Ward 2 17.9

Ward 3 11.9

Ward 4 13.3

Ward 5 11.4

Ward 6 22.1

Ward 7 13.6

Ward 8 13.0

450 rows

6507 rows

A Scale Example ofPopulation Density in DC

Demonstration

• http://onthemap.ces.census.gov/

Design Approach

• Clear, limited goal: What is this tool? What isn't it?

• Tight design and development process• Talented team• Input from prospective users and data experts• Focusing on the goal and not the pathway• Continual Improvement: 6 versions in 6 years

Continual Improvement

• Allowing goals to evolve• Open ended development process• Live/die by performance• Usability can always be improved

Also Worth Mentioning

• Spinoffs– OnTheMap for Emergency Management– OnTheMap Mobile

• In The Future– Data Cutting Tools (QWI and LODES)– QWI Explorer– Job-to-Job Flows

Contacts

• OnTheMap– http://onthemap.ces.census.gov

• LEHD Program– http://lehd.ces.census.gov

• Questions– CES.OnTheMap.Feedback@census.gov– matthew.graham@census.gov