1 / 20

Raster GIS

Raster GIS. Introduction. Programme. Day 1: Introduction to raster modelling in ArcGIS Practical exercise #1: comparing raster and vector data models Point-surface interpolation Practical extercise #2: interpolating point data in ArcGIS Cartographic modelling

john
Télécharger la présentation

Raster GIS

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Raster GIS

  2. Introduction

  3. Programme • Day 1: • Introduction to raster modelling in ArcGIS • Practical exercise #1: comparing raster and vector data models • Point-surface interpolation • Practical extercise #2: interpolating point data in ArcGIS • Cartographic modelling • Practical exercise #3: modelling in ArcGIS and Grid • Day 2: • Digital elevation models • Practical exercise #4: terrain analysis in ArcGIS and grid

  4. Safety, etc. • Fire alarm and exits • Toilets • Tea and coffee • Lunch

  5. Day 1: Introduction to raster • Prior experience with raster and vector data models? • Basics of raster model • Grids and cells, rows and columns • Points, lines, areas, surfaces and images • Binary, categorical and continuous data types • Resolution and orientation (generalisation) • Topology • Typical data sources • Vector to raster conversion • Satellite and aerial imagery • DEMs by direct measurement • Point-surface interpolation

  6. Prior experience? • Vector GIS in ArcGIS and MapInfo? • Familiarity with basic GIS concepts • Familiarity with ArcGIS and ArcMap interface • Raster GIS? • ArcGIS, ArcView, MapInfo Vertical Mapper, Idrisi, GRASS, etc. • Image processing software (e.g. ERDAS Imagine, PCI, etc.) • Microsoft Excel (or any other spreadsheet software) • Digital photography and image management/editing software

  7. Basics of raster data model • Grids and cells, rows and columns...

  8. Basics of raster data model • Feature types: • Points, lines and areas

  9. Basics of raster data model • Feature types: • Networks and surfaces

  10. Basics of raster data model • Feature types: • Images

  11. Basics of raster data model • Data types: • Continuous (a), categorical (b), image (c)

  12. Basics of raster data model • Data types: • Binary (demonstration of raster file structures)

  13. Basics of raster data model • Resolution and orientation (generalisation)

  14. Basics of raster data model • Topology

  15. Data sources • Vector to raster conversion

  16. Data sources • Vector to raster conversion – topological mismatch

  17. Data sources • Satellite and aerial imagery

  18. Data sources • DEMs (Digital Elevation Models) by direct measurement

  19. Data sources • Point-surface interpolation Points Surface

  20. Querying in ArcMap • Hands-on Exercise #1 • Comparing raster and vector data models

More Related