NEPHO PH&I Training Day Using GIS to Visualise Data Part2
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Transcript of NEPHO PH&I Training Day Using GIS to Visualise Data Part2
Delivering independent intelligence for health and wellbeingDelivering independent intelligence for health and wellbeing
NEPHO PH&I Training Day Using GIS to Visualise Data
Part28th December, 2009
Alison Copeland
Delivering independent intelligence for health and wellbeing
The various types of data referenced spatially in a GIS system are often referred to as "layers".
Similar to an Overhead Projector, with a series of transparencies laid upon it.
What is a GIS?
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What is a GIS?
Vital DataBirths Deaths
Disease Demographics
Clinical DataLabs
RadiologyInpatient
Outpatient
Employer DataLocation
Health PlansDemographics
Employee Locations
Geographical DataPCTsSHAs
PostcodeStreet
Financial DataHRG Costs
Hospital SpendingPrescription Costs
Facilities DataFloor Plans
AssetsResources
Provider DataLocationsHospitalsPhysiciansAncillaries
Client DataDemographics
AdmissionsClinical Outcomes
Demand DataCaseloads
ProceduresDiseases
Market DataAge/SexIncome
EducationEthnicity
Social status Environmental DataAir & Water QualityBiological HazardsInfectious Diseases
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Task
You have been asked to assist the local health authority to create some maps to help in the location of a new drug treatment centre in your area.
What information might be of use in this task?
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Getting started with GIS…
you will need…• GIS Software• Spatial Data• Database or spreadsheet to store attributedata• Training• Time and perseverance
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GIS Software• MapInfo Professionalhttp://www.mapinfo.com• ESRI’s ArcViewhttp://www.esri.com(MapInfo is used by the majority of NHS users)• GRASS GIShttp://grass.itc.it/ (available free)• Instant Atlas http://www.instantatlas.com/
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A map is an abstraction from reality, to inform us about
some aspect of reality.
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Delivering independent intelligence for health and wellbeing
Delivering independent intelligence for health and wellbeing
Delivering independent intelligence for health and wellbeing
Delivering independent intelligence for health and wellbeing
Spatial Data
3 Major types of data:Boundaries (and other vector) data• Counties• Local Authorities• PCTs• LSOARoad networksBackground mapping (raster) data• 1:50,000 colour raster map• Points• Postcodes (e.g. NHS Postcode Directory)
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Boundary Data: OS Boundary Line
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Boundary Data: OS Boundary Line
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Boundary Data: OS Boundary Line
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Other vector data: OS Meridian 2
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Raster Data: Miniscale from OS
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Raster Data: 1:50,000 from OS
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Raster Data: 1:250,000 from OS
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Point data: NHS Postcode Directory (free to NHS)
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Making Maps
Things to Remember• It must be clear what is being shown on the
mapsColours:• Avoid red & green together (colour-blindness)• Choice of colours may prejudice interpretation
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Making Maps
Classifications and ranges• Don’t choose too many (or two few) rangesThink about how these are classified:• Is your choice justified, or is the map a kind of
LIE?What about your choice of area unit?