SAGA – First StepsSAGA User Group Association GEOSTAT 2012

SAGAFirst Steps

Setup, data import, visualization andbasic terrain analysis

Volker Wichmann

SAGA – First StepsSAGA User Group Association GEOSTAT 2012

2V. Wichmann

SAGA | Setup on Windows

Download of SAGA 2.0.8 binaries

(1) www.saga-gis.org

(2) >> Downloads (@ SourceForge)

SAGA – First StepsSAGA User Group Association GEOSTAT 2012

3V. Wichmann

SAGA | Setup on Windows

(3) >> SAGA - 2.0

(4) >> SAGA 2.0.8

64bit

32bit

SAGA – First StepsSAGA User Group Association GEOSTAT 2012

4V. Wichmann

SAGA | Setup on Windows

(5) Extract zip file:

SAGA – First StepsSAGA User Group Association GEOSTAT 2012

5V. Wichmann

SAGA | Setup on Linux, FreeBSD

Binary packages, see

https://sourceforge.net/apps/trac/saga-gis/wiki/Binary%20Packages

Compiling from source, see

https://sourceforge.net/apps/trac/saga-gis/wiki/Compiling%20a%20Linux%20Unicode%20version

https://sourceforge.net/apps/trac/saga-gis/wiki/Compiling%20SAGA%20on%20FreeBSD

SAGA – First StepsSAGA User Group Association GEOSTAT 2012

6V. Wichmann

SAGA | Data Import

Native Formats

Tables (tab-delimited *.txt, *.dbf) Shapes (ESRI Shapefiles, *.shp) Grids (SAGA grids, *.sgrd) Point Clouds (SAGA pointcloud, *.spc)

Other Formats

10 Import/Export module libraries with almost 70 modules including

GDAL/OGR (includes a SAGA grid driver since version 1.7.1) libLAS

SAGA – First StepsSAGA User Group Association GEOSTAT 2012

7V. Wichmann

SAGA | Data Import

Import From GeoTIFF

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Grids get sorted by Grid System: Cellsize Colums / Rows Lower left coordinate

SAGA – First StepsSAGA User Group Association GEOSTAT 2012

8V. Wichmann

SAGA | Data Visualization – Map View

Visualization in a Map View

A double left-click on the dataset in the Data tab opens a new Map View

Explore the Object Properties window: Settings, Description, Legend and History

SAGA – First StepsSAGA User Group Association GEOSTAT 2012

9V. Wichmann

SAGA | Data Visualization – Map View

Visualization in a Map View

Change the color palette from greyscale to SAGA's default

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SAGA – First StepsSAGA User Group Association GEOSTAT 2012

10V. Wichmann

SAGA | Data Visualization – Map View

Visualization in a Map View

Change the color palette from greyscale to SAGA's default

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SAGA – First StepsSAGA User Group Association GEOSTAT 2012

11V. Wichmann

SAGA | Data Visualization

Analytical Hillshading

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C D

double left-click

SAGA – First StepsSAGA User Group Association GEOSTAT 2012

12V. Wichmann

SAGA | Data Visualization

Analytical Hillshading

SAGA – First StepsSAGA User Group Association GEOSTAT 2012

13V. Wichmann

SAGA | Data Visualization – 3D View

Visualization in a 3D View

Every Map View can be visualized in 3D

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SAGA – First StepsSAGA User Group Association GEOSTAT 2012

14V. Wichmann

SAGA | Data Visualization – 3D View

Visualization in a 3D View

SAGA – First StepsSAGA User Group Association GEOSTAT 2012

15V. Wichmann

SAGA | Terrain Analysis

Basic Terrain Analysis

A selection of basic parameters and objects to be derived from a Digital Terrain Model using standard settings.

The meta-module is coupling the following modules:

Terrain Analysis – Preprocessing: Sink Removal -> hydrological sound DTMTerrain Analysis – Lighting, Visibility: Analytical HillshadingTerrain Analysis – Morphometry: Slope, Aspect, Curvature -> slope, aspectGrid – Filter: Simple Filter -> smooth DTMTerrain Analysis – Morphometry: Slope, Aspect, Curvature -> profile and

plan curvatureTerrain Analysis – Morphometry: Convergence IndexTerrain Analysis – Hydrology: Catchment Area (Parallel)Terrain Analysis – Hydrology: Flow Width and Specific Catchment AreaTerrain Analysis – Hydrology: Topographic Wetness Index (TWI)Terrain Analysis – Hydrology: LS FactorTerrain Analysis – Channels: Channel Network and Drainage BasinsTerrain Analysis – Channels: Vertical Distance to Channel Network

SAGA – First StepsSAGA User Group Association GEOSTAT 2012

16V. Wichmann

SAGA | Terrain Analysis

Basic Terrain Analysis

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SAGA – First StepsSAGA User Group Association GEOSTAT 2012

17V. Wichmann

SAGA | Terrain Analysis

Basic Terrain Analysis

Analytical Hillshading Slope Aspect

Plan Curvature Profile Curvature Convergence Index

SAGA – First StepsSAGA User Group Association GEOSTAT 2012

18V. Wichmann

SAGA | Terrain Analysis

Basic Terrain Analysis

Catchment Area Wetness Index LS Factor

Altitude above Ch. Network Ch. Network Base Level Ch. and Drainage Basins