AW GIS presentation EEAE print

Views:
 
Category: Education
     
 

Presentation Description

No description available.

Comments

Presentation Transcript

Slide1: 

GIS : Introduction and Application for Environmental Health Studies Alan Willmore Senior Statistical Systems Officer Centre for Epidemiology and Research New South Wales Health Department

Overview: 

Overview GIS – an introduction GIS applications for environmental health

Slide3: 

Geographic Information System GIS handles SPATIAL information Information referenced by its location GIS makes connections based on spatial proximity Maps are just one product of a GIS A way to visualise analysis The objective: to improve decision making What is GIS ?

Slide4: 

GIS - a formal definition “A system for capturing, storing, checking, integrating, manipulating, analysing and displaying data which are spatially referenced to the Earth. This is normally considered to involve a spatially referenced computer database and appropriate applications software” Chorley Report, 1987

Slide5: 

GIS concepts are not new ! London cholera epidemic - 1854 +

Slide6: 

GIS components Applications ? G I S Spatial data Computer hardware / software tools

Slide7: 

What makes data spatial ? Place name Postcode Distance & bearing Description

Slide8: 

Categories of spatial data Point GPS Street address Soil sample grid Line / Polyline AHS boundary Postcode boundary Road centreline Raster Aerial photograph Landsat-7 satellite imagery DEM

Slide9: 

Resolution of spatial data Scale is important 1:100,000 means 1cm = 1 kilometre Spatial resolution refers to the relative accuracy or precision of spatial data E.g. Landsat-7 satellite images have 30 metre cells

Slide10: 

GIS Software MapInfo Professional (demo) Vertical Mapper ESRI ArcGIS Spatial Analyst Geostatistical Analyst Manifold GRASS Free open source PostGIS Free open source

Slide11: 

Summary GIS handles SPATIAL information GIS is a valuable tool for managing and analysing environmental health datasets Don’t underestimate the time involved in obtaining data in the form you need Similar for learning how to use a GIS software package

authorStream Live Help