GRASS 6 Tutorial: Difference between revisions

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The Free Software/Open Source GIS GRASS 6 is fully operational and stable version for production use.  This tutorial tries to
GRASS GIS version 6.4 is fully operational and stable version that can be used for production use.  This tutorial will familiarize you with the improved functionality and will focus on raster and vector data management as well some basic spatial data analysis.
give you a hand to familiarize yourself with the improved functionality, especially in the vector engine and attribute management.
 
For further reading, see the references below.
This tutorial is intended for GRASS GIS users who want to migrate from a previous release to the new GRASS Version. If you are a beginner, please also consider additional [http://grass.itc.it/gdp/tutorials.php books or tutorials] as well as consulting the [[GRASS_Help| Introductory Material]].  
 


'''Disclaimer:''' In case the examples described here do not work properly, you are kindly invited to send us further examples and/or code bugfixes/enhancements. Enjoy the WIKI!
'''Disclaimer:''' In case the examples described here do not work properly, you are kindly invited to send us further examples and/or code bugfixes/enhancements. Enjoy the WIKI!


This tutorial is intended for GRASS users who want to migrate from a previous release to the new GRASS Version. If you are a beginner, please also consider additional [http://grass.itc.it/gdp/tutorials.php books or tutorials].
'''''NOTE: This tutorial is under construction and is incorporating sections of the [http://grass.osgeo.org/grass57/tutorial/ previous GRASS 5.7 tutorial].'''''
 
'''''NOTE: This tutorial here still awaits the merge of the [http://grass.osgeo.org/grass57/tutorial/ previous GRASS 5.7 tutorial].'''''


==Introduction==
==Introduction==


New GRASS development has made major improvements to the vector
New developments in GRASS GIS have made major improvements to the vector
architecture. The most significant change includes a new 2- and
architecture. The most significant change includes a new 2- and
3-dimensional vector library that manages vector attributes in
3-dimensional vector library that manages vector attributes in
standard database management systems (DBMS). This system provides the
standard database management systems (DBMS), providing a fully relational database for vector attribute management,
power of true relational databases for vector attribute management
while preserving the flexibility of traditional GRASS topological
while preserving the flexibility of traditional GRASS topological
tools. GRASS now also incorporates true 3-dimensional voxels in the
tools. GRASS now also incorporates true 3-dimensional voxels in the
Line 21: Line 19:
virtually every tool in the GRASS library.
virtually every tool in the GRASS library.


==Getting started in general==
If you are new to GRASS GIS and plan to use the command line inteface and/or within a Linux environment, it is recommended that you read the [http://www.linux.org/lessons/ Introductory Material] for Linux. Also, if you have been using other GIS packages, you may find the [[GRASS_Help#Migration_from_other_GIS_Software|Migration tips]] useful reading.


* [[GRASS_Help| Introductory Material]] for GRASS
This tutorial is designed to give you hands-on experience with GRASS GIS. We start by showing you how to view and query raster and vector data and continue by explaining how to import and process raster and vector data.
* [http://www.linux.org/lessons/ Introductory Material] for Linux
===[http://grasswiki.osgeo.org/wiki/GRASS_6_Tutorial/Getting_Started Getting started]===


==Getting started - how to migrate to the new GRASS version==
===[http://grasswiki.osgeo.org/wiki/GRASS_6_Tutorial/Displaying_spatial_data Displaying Spatial Data]===


* [[Grass Six Tutorial Getting Started]]
==Using GRASS with raster data==
* [[GRASS_Help#Migration_from_other_GIS_Software|Migration tips]] from other GIS softwares


==Raster data management==
===Overview===


* The raster management works as it did in previous GRASS versions.
This section of the tutorial is intended to provide new users with an introduction to raster data management in GRASS GIS. As with other parts of the GRASS 6 tutorial, the examples are largely based on the GRASS 5.7 tutorial as well as the GRASS GIS presentation at Geostat-2012. The aim is to present the reader with introductory information on handling raster data within GRASS GIS. It is worth mentioning that the raster management hasn't changed significantly from previous versions of GRASS (e.g. versions 4 or 5), therefore older tutorials and books on the GRASS raster modules should also work.
: Tutorials and books written for GRASS 4 and 5 should for the most part still work.
* [http://grass.ibiblio.org/grass63/manuals/html63_user/rasterintro.html Raster data processing introduction] from the main help manual.


==Vector data management==
===[http://grasswiki.osgeo.org/wiki/GRASS_6_Tutorial/Raster_data_management Raster Data Management]===


* [http://grass.ibiblio.org/grass63/manuals/html63_user/vectorintro.html Vector data processing introduction] from the main help manual.
==Using GRASS with vector data==


===[[Grass Six Tutorial Default Settings]]===  
===Overview===
      - Default settings for vector geometry;
The native GRASS vector format provides provides vector topology with n:m mapping of geometry features to attributes. In addition, vector layers are supported with a variety of database management systems (DBMS) supported as back-ends that include: SQLite, PostgreSQL + PostGIS, MySQL, ODBC (, DBF). The vector geometry types supported in GRASS includes: points, centroids, lines, boundaries, areas (boundaries + centroids), face (3d areas), kernels and volumes.  
          for vector attributes; for db.* modules


===[[Grass Six Tutorial Geometry Management]]===
The examples that follow in this section on vector data management are based on the datasets available [http://data.neteler.org/geostat2012/north_carolina here]
http://grass.osgeo.org/grass57/tutorial/geom_storage.html
        -  General notes on Geometry
          management; Managing the default settings;
          GRASS vector architecture; Geometry stored in native format;
          Geometry stored in SHAPE file;
          Import/export of vector data Geometry;
          Generating vector geometry from various sources


===[[Grass Six Tutorial Attribute Management]]===
===[http://grasswiki.osgeo.org/wiki/GRASS_6_Tutorial/Vector_data_management Vector Data Management]===
http://grass.osgeo.org/grass57/tutorial/attrib_storage.html
        - General notes on Attribute
          management; Managing the default settings; Examples;
          Database Schema


==Usage examples==
===[http://grasswiki.osgeo.org/wiki/GRASS_6_Tutorial/Vector_spatial_analysis Vector Spatial Analysis]===


''There await porting from the GRASS 5.7 tutorial''
===Vector network analysis examples [from GRASS 5.7 tutorial]===


===Basic usage examples===
* New Spearfish examples: [http://grass.osgeo.org/grass63/manuals/html63_user/v.net.html v.net], [http://grass.osgeo.org/grass63/manuals/html63_user/v.net.iso.html v.net.iso], [http://grass.osgeo.org/grass63/manuals/html63_user/v.net.path.html v.net.path] etc.
* Old tutorial: http://grass.osgeo.org/grass57/tutorial/network.html
<!--- dmci: This is commented out as it has been updated in vector data management, tho' useful for reference to go back to check that everything has been incorporated.
===Basic usage examples [from GRASS 5.7 tutorial]===
http://grass.osgeo.org/grass57/tutorial/ex_basic.html
http://grass.osgeo.org/grass57/tutorial/ex_basic.html
--->
===[http://grass.osgeo.org/grass57/tutorial/ex_complex.html Complex usage examples  [from GRASS 5.7 tutorial]]===


===Complex usage examples===
===[http://grass.osgeo.org/grass57/tutorial/usa_demo.html Examples from US National Atlas  [from GRASS 5.7 tutorial]]===
http://grass.osgeo.org/grass57/tutorial/ex_complex.html


===Vector network analysis examples===
==Using GRASS with R==


* New Spearfish examples: [http://grass.osgeo.org/grass63/manuals/html63_user/v.net.html v.net], [http://grass.osgeo.org/grass63/manuals/html63_user/v.net.iso.html v.net.iso], [http://grass.osgeo.org/grass63/manuals/html63_user/v.net.path.html v.net.path] etc.
===GRASS and R kriging interpolation===
* Old tutorial: http://grass.osgeo.org/grass57/tutorial/network.html


===Vector overlay/clipping examples===
===Mini How to interpolate using kriging with GRASS and R===
http://grass.osgeo.org/grass57/tutorial/vectoroverlay.html


===Examples from US National Atlas===
[[How to interpolate point value using kriging method with R and GRASS 6]]
http://grass.osgeo.org/grass57/tutorial/usa_demo.html
 
===FAQ (Frequently Asked Questions)===
* [[Faq|GRASS Wiki FAQ]]


* [[Grass Six Tutorial Faq]]
==Using GRASS with GMT==


==Troubleshooting==
* [http://169.237.35.250/~dylan/grass_user_group/ GRASS-GMT Examples]
http://grass.osgeo.org/grass57/tutorial/troubleshooting.html


* Grass Six Tutorial Troubleshooting
==Additional Information==


==Links of interest==
===FAQ (Frequently Asked Questions)===


* GRASS-GMT Examples: http://169.237.35.250/~dylan/grass_user_group/
* [[Faq|GRASS Wiki FAQ]]


==Further reading==
* [[Grass Six Tutorial Faq]]


===GRASS and R kriging interpolation===
* [http://grasswiki.osgeo.org/wiki/GRASS_Help Help and Troubleshooting]


====Mini How to interpolate using kriging with GRASS and R====
=== References ===


[[How to interpolate point value using kriging method with R and GRASS 6]]
* GRASS [http://grass.osgeo.org/gdp/tutorials.php books and tutorials]
<!--- dmci: link not working * GRASS 6 Tutorial at [http://www.gdf-hannover.de/literature GDF]
* Translation Portal for GRASS 6 Tutorial http://www.gdf-hannover.de/translation--->
* GRASS [http://www.geostat-course.org/Topic_NetelerMetz_2012 GEOSTAT 2012] course


==== References ====
* GRASS [http://grass.osgeo.org/gdp/tutorials.php books and tutorials]
* GRASS 6 Tutorial: http://www.gdf-hannover.de/literature
* Translation Portal for GRASS 6 Tutorial http://www.gdf-hannover.de/translation


[[Category: Documentation]]
[[Category: Documentation]]
[[Category: Tutorial]]
[[Category: Tutorial]]

Latest revision as of 08:29, 30 July 2013

GRASS GIS version 6.4 is fully operational and stable version that can be used for production use. This tutorial will familiarize you with the improved functionality and will focus on raster and vector data management as well some basic spatial data analysis.

This tutorial is intended for GRASS GIS users who want to migrate from a previous release to the new GRASS Version. If you are a beginner, please also consider additional books or tutorials as well as consulting the Introductory Material.


Disclaimer: In case the examples described here do not work properly, you are kindly invited to send us further examples and/or code bugfixes/enhancements. Enjoy the WIKI!

NOTE: This tutorial is under construction and is incorporating sections of the previous GRASS 5.7 tutorial.

Introduction

New developments in GRASS GIS have made major improvements to the vector architecture. The most significant change includes a new 2- and 3-dimensional vector library that manages vector attributes in standard database management systems (DBMS), providing a fully relational database for vector attribute management, while preserving the flexibility of traditional GRASS topological tools. GRASS now also incorporates true 3-dimensional voxels in the NVIZ visualization environment as well as numerous enhancements to virtually every tool in the GRASS library.

If you are new to GRASS GIS and plan to use the command line inteface and/or within a Linux environment, it is recommended that you read the Introductory Material for Linux. Also, if you have been using other GIS packages, you may find the Migration tips useful reading.

This tutorial is designed to give you hands-on experience with GRASS GIS. We start by showing you how to view and query raster and vector data and continue by explaining how to import and process raster and vector data.

Getting started

Displaying Spatial Data

Using GRASS with raster data

Overview

This section of the tutorial is intended to provide new users with an introduction to raster data management in GRASS GIS. As with other parts of the GRASS 6 tutorial, the examples are largely based on the GRASS 5.7 tutorial as well as the GRASS GIS presentation at Geostat-2012. The aim is to present the reader with introductory information on handling raster data within GRASS GIS. It is worth mentioning that the raster management hasn't changed significantly from previous versions of GRASS (e.g. versions 4 or 5), therefore older tutorials and books on the GRASS raster modules should also work.

Raster Data Management

Using GRASS with vector data

Overview

The native GRASS vector format provides provides vector topology with n:m mapping of geometry features to attributes. In addition, vector layers are supported with a variety of database management systems (DBMS) supported as back-ends that include: SQLite, PostgreSQL + PostGIS, MySQL, ODBC (, DBF). The vector geometry types supported in GRASS includes: points, centroids, lines, boundaries, areas (boundaries + centroids), face (3d areas), kernels and volumes.

The examples that follow in this section on vector data management are based on the datasets available here

Vector Data Management

Vector Spatial Analysis

Vector network analysis examples [from GRASS 5.7 tutorial]

Complex usage examples [from GRASS 5.7 tutorial]

Examples from US National Atlas [from GRASS 5.7 tutorial]

Using GRASS with R

GRASS and R kriging interpolation

Mini How to interpolate using kriging with GRASS and R

How to interpolate point value using kriging method with R and GRASS 6

Using GRASS with GMT

Additional Information

FAQ (Frequently Asked Questions)

References

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