COMPARISON OF FREE SOFTWARE DESKTOP GIS

 

WRITTEN BY GIMI AAUCTU ON DECEMBER 16, 2013. POSTED IN ARTICLES

The Research Group in Information Management (GIMI) of the Pedagogical and Technological University of Colombia , made ​​a comparison on free GIS software, based on quality metrics defined in the standard ISO 9126-3. The results were presented at the 5th Conference of Latin American and Caribbean gvSIG , held in Buenos Aires in October 2013.

Conducting comparative born of the need to select a set of free tools that would allow the creation of a platform for managing the Land Use Plan (POT) of the different municipalities in Colombia.

SIG-OT Colombia

The tools have been tested gvSIG , GRASS , Kosmo , OpenJump , Saga , uDig and Quantum . The evaluation parameters, falls under the ISO 9126 standard – 3, were:

  • Basic functionality: for the development of GIS applied to the POT is essential to have a tool that facilitates the management of layers and their attributes.
  • Spatial analysis is considered important, because proper management for the POT analysis of geographical data for decision-making is required.
  • Ability vector: vector data processing is the most common observed in different GIS consulted therefore considered indispensable.
  • Raster Capacity: data processing raster GIS for Land Management Plans are not considered necessities, however, is necessary to evaluate this parameter.
  • Interoperability: is of great importance because many GIS systems are composed of various (databases, map servers) so it must have characteristics that allow their interaction. Yield capacity in response times and streamline back GIS creation processes.
  • Generating maps: tools and / or functions to create colorful maps and generate reports are important because they facilitate the publication of results.
  • Documentation and support: documentation and tool support are considered complementary because they are not fundamental to the development of GIS.

According to the evaluation of the parameters specified above and a detailed study of the various components and functions of the tools, supported by 5 theses developed by researchers GIMI, presented below the score for each of the tools assessed:

 
gvSIG
GRASS
Kosmo
OpenJump
Saga
uDIG
Quantum
Basic Functionality
4.76
5.00
4.22
4.31
3.50
4.72
4.60
Spatial Analysis
5.00
5.00
2.06
3.86
4.82
2.86
3.89
Vectorial capacity
4.75
4.80
3.45
4.50
3.00
4.80
5.00
Capacity raster
4.79
5.00
1.00
3.00
4.25
0.00
0.00
Interoperability
5.00
4.84
3.45
2.95
0.86
4.49
3.94
Performance
5.00
5.00
4.08
3.28
3.18
4.40
4.00
Map generation
4.94
4.71
3.36
2.97
1.88
3.02
3.73
Documentation and Support
5.00
5.00
5.00
5.00
5.00
5.00
5.00

From the table above and taking into account the number of parameters, factors, indices and indicators considered, it can be concluded that performing grading tools, gvSIG has better performance in terms of free GIS tools:

Tool
Score
gvSIG
4.90
GRASS
4.88
Kosmo
3.47
OpenJump
3.70
Saga
3.01
uDIG
3.96
Quantum
4.01

For the development of any suite, or application, you must use the best tools to develop a quality system that meets all the metrics proposed by different international institutes such as ISO, based on the results of the comparison, suggests using the gvSIG tool for the development of Geographic Information Systems focused on the management of Land Management Plans, particularly in Colombia.  
should be noted that the results of the comparison depend on the application that will be developed, and thus functionalities that this requires.

This text is a short summary of the article written by Juan Sebastián González Sanabria , assistant professor at the Pedagogical and Technological University of Colombia (Tunja, Boyacá – Colombia) and  Gustavo Caceres Castellanos , a professor associated Pedagogical and Technological University of Colombia (Tunja, Boyacá – Colombia). 
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