nowosad / geopat2

GeoPAT 2 - a suite of modules dedicated to analysis of large datasets in their entirety using spatial and/or temporal patterns

GeoPAT 2

Overview

GeoPAT 2 (Geospatial Pattern Analysis Toolbox) is a standalone suite of modules written in C and dedicated to analysis of large Earth Science datasets in their entirety using spatial and/or temporal patterns. Global scale, high resolution spatial datasets are available but are mostly used in small pieces for local studies. GeoPAT enables studying them in their entirety. GeoPAT’s core idea is to tessellate global spatial data into grid of square blocks of original cells (pixels). This transforms data from its original form (huge number of cells each having simple content) to a new form (much smaller number of supercells/blocks with complex content). Complex cell contains a pattern of original variable. GeoPAT provides means for succinct description of such patterns and for calculation of similarity between patterns. This enables spatial analysis such as search, change detection, segmentation, and clustering to be performed on the grid of complex cells (local patterns).

Installation

Installation instruction in detail can be found in the GeoPAT 2 manual.

Windows

The installer for Windows x64 is available at https://github.com/Nowosad/geopat2win/raw/master/GPAT2setup.exe.

MacOS

The GeoPAT 2 Unix executable programs, compiled for Mac OS with the Apple M1 Max processor (an ARM64 architecture), are available at https://github.com/Nowosad/geopat2mac. These programs can be run from a shell script, or with R's system command.

Building from source code

To build GeoPAT 2 from the source code, the development files for GDAL are required. They can be installed on Ubuntu using:

sudo add-apt-repository ppa:ubuntugis/ubuntugis-unstable --yes
sudo apt-get --yes --force-yes update -qq
sudo apt-get install --yes libgdal-dev

... or on Fedora with:

sudo dnf install gdal-devel

The source code of GeoPAT 2 is available at https://github.com/Nowosad/geopat2/archive/master.zip. This archive should be unpacked, compiled and installed, e.g. with:

wget https://github.com/Nowosad/geopat2/archive/master.zip
unzip master.zip
mv geopat2-master geopat2
cd geopat2
make
sudo make install

How to cite GeoPAT 2

Netzel P., Nowosad J., Jasiewicz J., Niesterowicz J, Stepinski T., 2018. GeoPAT 2: user's manual. Zenodo. http://doi.org/10.5281/zenodo.1291123

Blog posts

1. GeoPAT 2: Software for Pattern-Based Spatial and Temporal Analysis
2. Pattern-based Spatial Analysis - core ideas
3. Finding similar local landscapes
4. Quantifying temporal change of landscape pattern
5. Pattern-based regionalization
6. Moving beyond pattern-based analysis: Additional applications of GeoPAT 2
7. GeoPAT2: Entropy calculations for local landscapes

Workshop at GEOSTAT 2018

• Video
• Slides

Acknowledgments

This work was supported by the University of Cincinnati Space Exploration Institute and by the grant NNX15AJ47G from the National Aeronautics and Space Administration (NASA). We also want to thank D G Rossiter for preparing and sharing the MacOS version of GeoPAT 2.