Material - Workshop WS 27: Unleash the power of GRASS GIS 7

Workshop held at FOSS4G 2016, Bonn, Germany

Abstract

Want to know how to analyze big geodata? ... do you enjoy true GIS analysis? In this introductory course we present GRASS GIS 7 which is a free GIS used for geospatial data management and analysis, image processing, graphics/maps production, spatial modelling, and visualization which runs on MS Windows, Mac OSX and Linux which is gaining enormous interest due to its impressive features (http://trac.osgeo.org/grass/wiki/Grass7/NewFeatures).
Our aim is to enable first time users to understand the modular logic of the software and to experiment some exciting data processing. The workshop provides a step by step tutorial to guide beginners from basic usage to vector analysis, up to complex remote sensing analysis. We will also cover QGIS interaction with GRASS GIS, data visualization, terrain analysis, and the export of geodata.
Some basic knowledge of general GIS aspects like data format, projection system is required but no GRASS GIS experience.
Keywords: geoprocessing, Open source Geospatial Technologies, vector, Spatial analysis, remote sensing, geospatial data, terrain analysis, GRASS-GIS, image processing

1) Introduction

• Who are the presenters
• Course overview: structure
• What are OSGeo, GFOSS, GRASS GIS, OSGeolive

2) GRASS GIS Software first steps

• Intro OSGeolive
• Intro QGIS-Processing-GRASS GIS
• Software installation
  • GRASS GIS 7
  • Starting OSGeoLive
• Data: course data: North Carolina
• Using GRASS GIS in QGIS through „Processing“

3) GRASS GIS general introduction

• Database structure of GRASS GIS
• About the course data set
• First steps in using GRASS GIS 7
  • Graphical user interface (GUI)
  • GRASS command structure
  • Command line or GUI?
  • Creating a perspective view

4) GRASS GIS raster introduction

• Raster processing concepts
• Import of a GeoTIFF (DEM)
• Color tables, NULL masks etc
• Hydrological modelling
• Raster capabilities in GRASS GIS

5) GRASS GIS Vector introduction

• Why a topological vector data model
• Vector feature extraction
• Vector geometry dissolving
• Geometry editing/digitizing
• Import/export
• Capabilities of the vector engine

6) GRASS GIS Temporal introduction

• Temporal GRASS framework
• Working with climate data
• Starting with temporal framework
• Aggregating, querying, visualizing temporal data

Slides

• grass2016_foss4g_bonn_01_general_intro.pdf 13M
  
• grass2016_foss4g_bonn_02_qgis_processing_intro.pdf 3.7M
  
• grass2016_foss4g_bonn_03_grass_intro_Piemont.pdf 4.0M
  
• grass2016_foss4g_bonn_04_grass_raster_intro.pdf 2.2M
  
• grass2016_foss4g_bonn_05_grass_vector_intro.pdf 1.5M
  
• grass2016_foss4g_bonn_06_grass_temporal.pdf 4.0M
  

Data

• Piemonte (Italy) location
• MODIS LST - Gap-filled Land Surface Temperatures, monthly averages, 2004-2014 (377 MB)