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Socio-Environmental Disorder and Urban Configuration
Project SEDUC
Data Geocoding
Enhanced Geocoding Toolkit
IncidentLocation
~50%
Socio-Environmental Disorder and Urban Configuration
Project SEDUC
Geocoding Geocoding IssuesIssuesGeocoding Geocoding IssuesIssues
Enhanced Geocoding ToolkitEnhanced Geocoding Toolkit
Standard geocoding~50%
Enhanced geocoding~90%
Details of pan-London study in:Brimicombe A..J.; Brimicombe, L..C. & Li, Y. (2007) Improving geocoding rates in preparation for crime data analysis. International Journal of Police Science and Management 9: 80-92
Socio-Environmental Disorder and Urban Configuration
Project SEDUC
Socio-Environmental Disorder and Urban Configuration
Project SEDUC
Functions: removal of non-address data, postcode cleaning etc.
Batch process to address level
L1 Standard Address Point Geocoding (Matchcode used for this procedure)
Pre-Process Cleansing
Is the record geocoded?
Yes
No
Geocoded tolevel L1
Enhanced Geocoding Toolkit: a multi-level approach – from L1 to L4
L1 Level
Address point data
PAF data
Socio-Environmental Disorder and Urban Configuration
Project SEDUC
geocode using other location information e.g junction data, station name etc.
L2 & L3 Advanced Geocoding
Is the record geocoded?
Yes
No
Geocoded tolevel L2
Is the record geocoded?
Yes
No
Geocoded tolevel L3
Is the record geocoded?
Yes
No
Geocoded tolevel L1
L2 Level
L3 Level geocode using postcode information
street junction data derived from OS ITN
gazetteer data
CodePoint data
Socio-Environmental Disorder and Urban Configuration
Project SEDUC
Move geocoded database
Add Validation code
End of process
Geocoding using CAD-ref and street name
L4 Geocoding at street level
L4 Level
Is the record geocoded?
YesNo Geocoded tolevel L4
street point data derived from OS ITN
CAD-ref data
Socio-Environmental Disorder and Urban Configuration
Project SEDUC
Level No. geocoded %
L1 50,363 55.4
L2 4,164 4.6
L3 13,061 14.4
L4 15,258 16.8
Total 82,846 91.1
Brimicombe A.J. Brimicombe, L. Li, Y. 2007 Improving geocoding rates in preparation for crime data analysis. International Journal of Police Science and Management. 9: 80-92 ISSN 1461-3557
Enhanced Geocoding Toolkit
90,904 records of all crime
Batch Batch cleaning cleaning with this with this toolkit toolkit
will will increase increase geocodingeocodin
g rateg rateand be and be
consistenconsistent for the t for the bulk of bulk of
the datathe data
Socio-Environmental Disorder and Urban Configuration
Project SEDUC
Socio-Environmental Disorder and Urban Configuration
Project SEDUC
Newham
Time period: Two years
January 2006 to December 2007
Total records in data set:
70,812
Anti-social behaviour records:
48,698
Variables: ASB incident type; date, time
Geo-coded records:
98% (47,617 records)
ASB incident types: 160 in total with sub-codes- drunken behaviour
- Threatening/violent behaviour
- Vandalism
- drug related
- Fly tipping
- Graffiti
- Hooliganism/Loutish behaviour
- Intimidation
- Noising neighbours
- Harassment
- Problematic congregation
Socio-Environmental Disorder and Urban Configuration
Project SEDUC
Tower Hamlets
Time period: Two years
January 2006 to December 2007
Total records in data set:
4, 327
Anti-social behaviour records:
4,327
Variables: ASB category type; date, time
Geo-coded records:
94% (4065 records)
ASB incident types: 17
- Anti-Social Behaviour Alcohol Related
- Damage to property
- Disability Related Incidents
- Drugs Harassment
- Dumping of Rubbish
- Faith Related Incidents
- Homophobic Incidents
- Noise Harassment
- Public Disorder (Sexual Acts)
- Race Related Incidents
- Threat of Violence/Nuisance
Socio-Environmental Disorder and Urban Configuration
Project SEDUC
Barking and Dagenham
Time period: Two years
April 2006 to March 2008
Total records in data set:
670
Anti-social behaviour records:
668
Variables: ASB category type; date, time
Geo-coded records:
99.6% (665)
ASB incident types: 19
- Drug / substance misuse & dealing
- Street drinking
- Environmental
- Vehicle related nuisance & Inappropriate vehicle
- Noise
- Rowdy & Nuisance Behaviour
- General Harassment
- Racial Harrassment
- Criminal damage / vandalism
- Rubbish
- Grafitti - Non Offensive