logging in or signing up AW GIS presentation EEAE print Maria Download Post to : URL : Related Presentations : Let's Connect Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Copy embed code: Embed: Flash iPad Dynamic Copy Does not support media & animations Automatically changes to Flash or non-Flash embed WordPress Embed Customize Embed URL: Copy Thumbnail: Copy The presentation is successfully added In Your Favorites. Views: 334 Category: Education License: All Rights Reserved Like it (0) Dislike it (0) Added: May 02, 2008 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member 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 DepartmentOverview: Overview GIS – an introduction GIS applications for environmental healthSlide3: 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, 1987Slide5: GIS concepts are not new ! London cholera epidemic - 1854 +Slide6: GIS components Applications ? G I S Spatial data Computer hardware / software toolsSlide7: What makes data spatial ? Place name Postcode Distance & bearing DescriptionSlide8: 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 DEMSlide9: 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 cellsSlide10: GIS Software MapInfo Professional (demo) Vertical Mapper ESRI ArcGIS Spatial Analyst Geostatistical Analyst Manifold GRASS Free open source PostGIS Free open sourceSlide11: 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 You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.