A library of spatial analysis functions.
Python Spatial Analysis Library
Above: Local Indicators of Spatial Association for Homicide Rates in US Counties 1990.
PySAL, the Python spatial analysis library, is an open source cross-platform library for geospatial data science with an emphasis on geospatial vector data written in Python. It supports the development of high level applications for spatial analysis, such as
detection of spatial clusters, hot-spots, and outliers
construction of graphs from spatial data
spatial regression and statistical modeling on geographically embedded networks
exploratory spatio-temporal data analysis
explore - modules to conduct exploratory analysis of spatial data, including statistical testing on points, networks, and polygonal lattices.
viz - visualize patterns in spatial data to detect clusters, outliers, and hot-spots.
model - model spatial relationships in data with a variety of linear, generalized-linear, generalized-additive, and nonlinear models.
dynamics - characterize distributional change, both internally and externally, for spatial and nonspatial distributions.
lib - solve a wide variety of computational geometry problems:
graph construction from polygonal lattices, lines, and points.
construction and interactive editing of spatial weights matrices & graphs
computation of alpha shapes, spatial indices, and spatial-topological relationships
reading and writing of sparse graph data, as well as pure python readers of spatial vector data.
conda install pysal
PySAL can be installed using pip:
pip install pysal
As of version 2.0.0 PySAL has shifted to Python 3 only.
Users who need an older stable version of PySAL that is Python 2 compatible can install version 1.14.3 through pip or conda:
conda install pysal==1.14.3
For help on using PySAL, check out the following resources:
As of version 2.0.0, PySAL is now a collection of affiliated geographic data science packages. Changes to the code for any of the subpackages should be directed at the respective upstream repository, and not made here. Infrastructural changes for the meta-package, like those for tooling, building the package, and code standards, will be considered.
Development is hosted on github.
If you are interested in contributing to PySAL please see our development guidelines <https://github.com/pysal/pysal/wiki/GitHub-Standard-Operating-Procedures>
To search for or report bugs, please see PySAL’s issues.
See the file “LICENSE.txt” for information on the history of this software, terms & conditions for usage, and a DISCLAIMER OF ALL WARRANTIES.
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