gvSIG Crime is the solution offered by the gvSIG Association to organize, analyze and maintain information related to security and crime. A platform adapted to the needs of each organization and territory, that includes several components, an important web part that establishes the necessary computer infrastructure to organize, share and access spatial information, with all types of spatio-temporal analysis tools, support for field tasks, …, and components that are more oriented to advanced analysis such as the desktop Geographic Information System (GIS).
It is precisely in this last part where this crime analysis course is focused, which is intended as an introduction to the use of gvSIG Desktop, an open source GIS software, as fundamental software to optimize the analysis of criminal information.
The course does not intend to make an exhaustive tour of all the gvSIG Desktop tools, and it’s focused on carrying out through practical exercises an invitation to explore the potential of its use in criminology.
The objectives of the course are:
- Gain a better understanding of geospatial technology applied to crime mapping.
- Perform queries based on attribute and location information to get accurate information.
- Use crime databases to produce customized datasets and density maps, or for hot-spot analysis and other geoprocesses.
- Learning basic programming concepts (scripting) to develop new analysis tools.
- Gain a better understanding of Geostatistics applications for crime analysis.
The course starts with basic modules, in which the student can access the spatial information and the complexity will increase, showing the most advanced possibilities of using gvSIG Desktop in the last modules, through the development of scripts in Python and R.
Here we present the links to the different modules of the course:
- Introduction to gvSIG Desktop: interface, add-ons manager and preferences
- Working with Views and Data
- Navigation and selection tools
- Creating layers
- Data visualization and geoprocessing
- Creating symbol libraries
- Population calculator
- Rossmo Algorithm
- Geoprocessing: Mean and median center
- Study of events by quadrant
- Analysis of events by blocks
- Kernel density
- Space-time analysis: 4D
- Use of Street View from gvSIG
- New scripting tools for data analysis
- Visualization of crime data with R in gvSIG
The material necessary to follow the course and do the exercises shown in each module is:
- gvSIG Desktop, that you can download in portable or installable versions and for Windows, Linux and Mac from here.
- Data. Data downloaded from the open data portal of the city of New York have been used. You can download them from here.
- Development. For the final modules about Python and R you have the scripts available in the following package. You must install it from the gvSIG Desktop Add-ons Manager.
Finally here you have a series of links to complementary material that will allow you to improve your gvSIG Desktop training:
- gvSIG Desktop Manual.
- GIS course applied to municipal management (it contains several video-tutorials that cover a large part of the tools available in gvSIG Desktop …).
- Users mailing list. Where you can send queries about the use of gvSIG Desktop to the gvSIG Community.
- Facebook group. We have created a new Facebook group aimed at students of the course and people interested in the use of GIS in criminology.
- Information about gvSIG Crime.
- For professional support, contact the gvSIG Association: firstname.lastname@example.org
We hope that you like this initiative and that this course will serve to extend the use of gvSIG in the security sector.