aRT: R-TerraLib API

aRT is an R package that provides the integration between the statistical software R and the GIS library TerraLib. The aim is to have a package for accessing geospatial data to be analysed in R. R is an open source language and environment for statistical computing and graphics. To learn more about R go to R project web page. TerraLib is an open source GIS classes and functions library, available from the Internet as a collaborative environment for the development of GIS tools. For further information visit TerraLib project web page.

1. Install aRT dependencies as detailed in the dependencies section.
2. Install as usual for R packages:

   > install.packages("aRT", contrib="http://www.leg.ufpr.br/aRT")

See FAQ for more details.

• Binaries for some Linux distros are also available.

• Instead of using install.packages(), you can download aRT_1.7-1.zip and use 'Install package(s) from local zip files' from the 'Packages' menu.

aRT depends on other availability of resources as follows and may not run correctly with versions other than indicated.

• Automatic install of all dependencies: install-aRT-dep 32 and 64 bits are apt-based scripts (Debian, Ubuntu, and friends) to facilitate installing aRT dependencies.

• Individual dependencies
  1. MySQL version 14.12 Distrib 5.0.32 or greater. MySQL is an open source DBMS.
     • apt install:

        apt-get install mysql-server-5.0 libmysqlclient15-dev

  2. Qt version 3.3.3. Qt is a multiplatform toolkit in C++ for the development of graphic interfaces, implemented by Trolltech.
     • apt:

       apt-get install libqt3-mt-dev

  3. JPEG. A library for working with jpeg image format.
     • apt:

        apt-get install libjpeg62-dev

  4. sp version at least 0.9-26. sp is an R package with S4 classes and methods for spatial data.
  5. TerraLib version 3.4.0. TerraLib is a library of classes for GIS. It is available under svn:

mkdir terralib
cd terralib
svn co https://svn.dpi.inpe.br/terralib/tags/v-3-4-0/src
svn co https://svn.dpi.inpe.br/terralib/tags/v-3-4-0/terralibx
svn co https://svn.dpi.inpe.br/terralib/tags/v-3-4-0/terraView
cd terraView/linux
make

The Makefile is in terraView/linux/. TerraLib directory needs to be registered in LD_LIBRARY_PATH. Put the following lines in your .bashrc (change path to TERRALIBDIR if needed):

TERRALIBDIR=/usr/local/terralib
LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$TERRALIBDIR/terralibx/Release:/usr/lib/ogdi/
export LD_LIBRARY_PATH

R CMD INSTALL --configure-args=--with-terralib=/terralib/dir aRT

1. MySQL version 14.12 Distrib 5.0.67 or greater. MySQL is an open source DBMS.
2. sp version at least 0.9-26. sp is an R package with S4 classes and methods for spatial data.

The following two figures are one example of R data (from geoR package) that can be exported to a TerraLib database, and then it can be visualized with TerraView.

One of the main objectives of aRT is to do spatial queries and operations in R. For example, in the following figure we have a spatial data from a TerraLib database of Recife city, in Brazil. In the top left figure we have the map of Recife and its districts, with some points, and the bottom left figure shows the seweage. The other two result from spatial queries. The top right answers "Which districts contains the points (yellow) and which ones are their neighbours (green)?" and the bottom right answers "Which sewers are inside (red) or touches (green) the districts that contain the points?"

Another example is shown below. In the left figure there are two cities and their neighbours of first and second order. The right side shows all the neighbours that are completely within a buffer given a distance from the polygons, and the ones that has some overlap with this buffer.

• aRT Manual (pdf)
• Introduction (html, pdf)
• Database connections (html, pdf)
• sp data (html, pdf)
• Tables and Queries (html, pdf)

• aRT: R-TerraLib API. P. R. Andrade, P. J. Ribeiro Junior. useR! 2006 (presentation, and a photo!)
• Integration of Statistics and Geographic Information Systems: the R/TerraLib Case. P. R. Andrade, P. J. Ribeiro Junior, K. Fook. GeoInfo 2005 (paper, presentation)
• A Process and Environment for Embedding The R Software into TerraLib. P. R. Andrade, P. J. Ribeiro Junior. GeoInfo 2005 (paper, presentation)

• Creating cells and filling attributes (script, shapefile data)
• Union of polygons (script, shapefile data)
• Neighbourhood, relations, and metrics (script, data dumped from R)
• Neighborhood matrix and analysis with spdep (script aRT, script maptools, shapefile data)
• Adehabitat example (script)

• aRT development page
• FAQ
• Old versions (source code)
• Old Windows versions
• R resources for spatial statistics at the the CRAN spatial task view.

• art_l at leg.ufpr.br

• Pedro Ribeiro de Andrade - pedro at dpi.inpe.br (maintainer)
• Paulo Justiniano Ribeiro Junior - paulojus at ufpr.br
• Eduardo Sant'Ana da Silva - eduardo.santanadasilva at gmail.com
• Henrique Dallazuanna - wwwhsd at gmail.com

• Marcos Aurélio Carrero
• Adriana Zanella Martinhago
• Thiago Eugênio Bezerra de Melo
• Elias Teixeira Krainski
• Karla Donato Fook

aRT has been developed with the computational resources of the Laboratory of Statistics and Geoinformation (LEG), at UFPR, together with Earth System Science Center (CST) and Image Processing Division (DPI), at INPE.

This project is partially supported by Fapesp, proccess number 04/11012-0, FPLF proccess 2005.05.066, and CNPq 552044/2002-4.

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