TerraHS

What is it ?

We have developed TerraHS, a software component that enables the development of geographical applications in a functional language, using the data handling capabilities of TerraLib. TerraLib is a C++ library that supports different spatial database management systems, and that includes a large number of spatial algorithms. As a result, we get a combination of the good features of both programming paradigms.

Features

The major features are:

• Input and output formats: Layers or themes from TerraLib databases (just MySQL), Esri Shape File (*.shp), TIFF file.
• Data types: Raster or image, Vectors (Point, Line, Polygon and Cell), Temporal (DateTime, Interval)
• Topological operators: intersects, within, touches, crosses ...
• Geometric operations: intersection, union, difference, rotation.
• Metrical operations: perimeter, area, distance, centroid, shapeindex, compacity, fractal

Demos

The following figure is one example of a vector data can be exported to a TerraLib database, and then it can be visualized with TerraView.

Download and Installation

TerraHS is available as cabal package from Hackage. See How to install a Cabal package in Linux or Windows.

Installation notes for Linux

Software dependencies in debian package

The installation procedure:

 sudo dpkg -i package.deb

The uninstallation procedure:

 sudo dpkg -r package

Software dependencies in source file

The installation procedure:

tar xvzf package.tar.gz
cd package
./configure
make
sudo make install

The uninstallation procedure:

 cd package
 sudo make uninstall

Software dependencies

TerraHS is a Haskell GIS application built using the TerraLib GIS library. In below, is available a debian packages for TerraLib. TerraHS-0.8 uses the TerraLib-3.3.0 version.

• TerraLib-3.3.0 for (Ubuntu 9.04 (x86))

Optional, but is recommended to install the TerraView application.TerraView is a GIS application based on TerraLib, a GIS library to handle vector and raster data in geographical DBMS such as Access, PostgreSQL, MySQL and Oracle Spatial.

• TerraView-3.3.0 for (Ubuntu 9.04 (x86))

The source files to TerraLib and TerraView can be downloaded from official sites:

• TerraLib
• TerraView.

We have developed some specific libraries to support some functionalities for TerraHS. The libraries can be installed from an unique package (TerraLib4c+Translib)

• TerraHSdependecies for Ubuntu 9.04 (x86)

Or can be download in separated way:

Translib, a library for translation among different geographic format files (no database connection), based in the TerraLib library. This library is required for TerraHS to deal whith shape files (*.shp).

• Ubuntu 9.04 (x86)
• Source, generic Linux

Terralib4c, a library that maps c++ Terralib functions and classes to C functions. Required by Haskell to do binding with TerraLib api.

• Ubuntu 9.04 (x86)
• Source, generic Linux

Papers, thesis and Reports

Some papers and thesis that use TerraHS:

• Sérgio Costa, Gilberto Câmara, et.al. Prototyping GIS Application in Functional Programming. In: GeoPantanal, 2009, Corumbá. Anais do II Geopantanal, 2009. download

• Sergio Costa, Gilberto Câmara, Danilo Palomo. TerraHS: Integration of Functional Programming and Spatial Databases for GIS Application Development. VIII Brazilian Symposium in Geoinformatics, GeoInfo 2006, Campos do Jordão, 2006. download

• Olga Bittencourt, Gilberto Câmara, Lúbia Vinhas, Joice Mota. Rule-based Evolution of Typed Spatio-temporal Objects. IX Brazilian Symposium in Geoinformatics, GeoInfo 2007, Campos do Jordão, 2007.download

• Sérgio Rosim. Estrutura baseada em grafos para representação unificada de fluxos locais para modelagem hidrológica distribuída. PhD Thesis in Computer Science at INPE, 2008.download