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SSN2

API—OSS—FREE—DOCS4/5
SS5.4#18 of 63
—Web—Windows—Mac—Linux—Android—iOS

Ranked in GIS Software ·No free plan on record

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SSN2 is ranked #18 of 63 in GIS software on Inferse.

Compared on GIS software

Free plan
Yesusepa.github.io
Deployment
desktopusepa.github.io
Spatial analysis
advancedusepa.github.io

Facts

Purpose
SSN2 is an R package for spatial statistical modeling and prediction on stream networks, including models based on in-stream distance.usepa.github.io · 5 Oct 2026
Modeling
It fits spatial linear models, including explanatory variables, using restricted or unrestricted maximum likelihood.usepa.github.io · 5 Oct 2026
Predictions
The package fits and summarizes spatial stream network models and predicts at unobserved locations (Kriging).usepa.github.io · 5 Oct 2026
Model types
It supports linear and generalized linear spatial stream network models.usepa.github.io · 5 Oct 2026
Spatial components
Its models can include tail-up, tail-down, Euclidean, and spatially independent nugget error components.usepa.github.io · 5 Oct 2026
Data handling
SSN2 imports stream edges, observed sites, and optional prediction sites from a non-proprietary .ssn folder.usepa.github.io · 5 Oct 2026
Preprocessing
The documentation recommends the SSNbler R package to prepare input data for SSN2.usepa.github.io · 5 Oct 2026
Diagnostics
Available functions include model augmentation, influence diagnostics, leave-one-out cross-validation, and fitted-model diagnostic plots.usepa.github.io · 5 Oct 2026
Mapping
The package includes mapping and other graphical functions, and its introduction uses ggplot2 and sf for visualizations.usepa.github.io · 5 Oct 2026
Dependencies
SSN2 imports sf for spatial data handling and spmodel for modeling functions, among other R packages.usepa.github.io · 5 Oct 2026
Installation
The site documents installation from CRAN and GitHub.usepa.github.io · 5 Oct 2026
License
The project is licensed under the GNU General Public License, GPL-3.usepa.github.io · 5 Oct 2026
Support
Users can get help by opening a GitHub issue, emailing the SSN support team, or posting on Stack Overflow or Cross Validated.usepa.github.io · 5 Oct 2026
Intended use
The package is designed for users fitting spatial stream network models to stream data, such as modeling stream phenomena and predicting values across a network.usepa.github.io · 5 Oct 2026

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Where it ranks on Inferse

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