{"id":19769503,"url":"https://github.com/rok-cesnovar/stan-distributions","last_synced_at":"2026-03-04T11:32:33.650Z","repository":{"id":92630680,"uuid":"432520198","full_name":"rok-cesnovar/stan-distributions","owner":"rok-cesnovar","description":"A web app to visualize distributions in Stan. Uses Stan Math C++ compiled to Webassembly to evaluate the functions using actual Stan implementations. 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It uses Stan Math C++ code to evaluate the log probability density/mass functions. The Stan Math C++ is compiled to Webassembly using [Emscripten](https://emscripten.org/index.html). [d3.js](https://d3js.org/) is used for visualizations.\n\nThis was inspired by the [distribution zoo](https://github.com/ben18785/distribution-zoo). The main differences of this approach are: \n- it runs entirely in the user's browser and does not require a server (very easy to fork and deploy your own custom version),\n- it uses the actual Stan C++ for all density/mass functions (Distribution zoo is based on R distribution implementations).\n\nThis currently supports the majority of Stan's univariate continuous distributions. Missing discrete distributions will be added shortly.\n\n## Links\n\n### Unbounded Continuous Distributions\n\n- [cauchy](https://rok-cesnovar.github.io/stan-distributions/cauchy)\n\n- [double_exponential](https://rok-cesnovar.github.io/stan-distributions/double_exponential)\n\n- [exp_mod_normal](https://rok-cesnovar.github.io/stan-distributions/exp_mod_normal)\n\n- [gumbel](https://rok-cesnovar.github.io/stan-distributions/gumbel)\n\n- [logistic](https://rok-cesnovar.github.io/stan-distributions/logistic)\n\n- [normal](https://rok-cesnovar.github.io/stan-distributions/normal)\n\n- [skew_double_exponential](https://rok-cesnovar.github.io/stan-distributions/skew_double_exponential)\n\n- [skew_normal](https://rok-cesnovar.github.io/stan-distributions/skew_normal)\n\n- [std_normal](https://rok-cesnovar.github.io/stan-distributions/std_normal)\n\n- [student_t](https://rok-cesnovar.github.io/stan-distributions/student_t)\n\n### Positive Continuous Distributions\n\n- [chi_square](https://rok-cesnovar.github.io/stan-distributions/chi_square)\n\n- [exponential](https://rok-cesnovar.github.io/stan-distributions/exponential)\n\n- [frechet](https://rok-cesnovar.github.io/stan-distributions/frechet)\n\n- [gamma](https://rok-cesnovar.github.io/stan-distributions/gamma)\n\n- [inv_chi_square](https://rok-cesnovar.github.io/stan-distributions/inv_chi_square)\n\n- [inv_gamma](https://rok-cesnovar.github.io/stan-distributions/inv_gamma)\n\n- [lognormal](https://rok-cesnovar.github.io/stan-distributions/lognormal)\n\n- [rayleigh](https://rok-cesnovar.github.io/stan-distributions/rayleigh)\n\n- [scaled_inv_chi_square](https://rok-cesnovar.github.io/stan-distributions/scaled_inv_chi_square)\n\n- [weibull](https://rok-cesnovar.github.io/stan-distributions/weibull)\n\n### Positive Lower-Bounded Distributions\n\n- [pareto](https://rok-cesnovar.github.io/stan-distributions/pareto)\n\n- [pareto_type_2](https://rok-cesnovar.github.io/stan-distributions/pareto_type_2)\n\n- [wiener](https://rok-cesnovar.github.io/stan-distributions/wiener)\n\n### Continuous Distributions on [0, 1]\n\n- [beta](https://rok-cesnovar.github.io/stan-distributions/beta)\n\n- [beta_proportion](https://rok-cesnovar.github.io/stan-distributions/beta_proportion)\n\n### Circular Distributions\n\n- [von_mises](https://rok-cesnovar.github.io/stan-distributions/von_mises)\n\n### Bounded Continuous Distributions\n\n- [uniform](https://rok-cesnovar.github.io/stan-distributions/uniform)\n### Unbounded Discrete Distributions\n\n- [neg_binomial](https://rok-cesnovar.github.io/stan-distributions/neg_binomial)\n\n- [neg_binomial_2](https://rok-cesnovar.github.io/stan-distributions/neg_binomial_2)\n\n- [neg_binomial_2_log](https://rok-cesnovar.github.io/stan-distributions/neg_binomial_2_log)\n\n- [poisson](https://rok-cesnovar.github.io/stan-distributions/poisson)\n\n- [poisson_log](https://rok-cesnovar.github.io/stan-distributions/poisson_log)\n\n## Custom distributions\n\n- [beta_unbounded](https://rok-cesnovar.github.io/stan-distributions/beta_unbounded)\n\nContributed by @noejn2.\n\n## Running it locally\n\n1. Clone the repository\n\n```\ngit clone https://github.com/rok-cesnovar/stan-distributions/\n```\n\n2. Start a simple Python server\n\nThis is required in order to serve the .wasm files. The actual computation still happens in the browser.\n\n```\npython3 -m http.server 8000\n```\n\n3. Open localhost:8000 in your favorite browser. Change the port number in step 2 if needed.\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Frok-cesnovar%2Fstan-distributions","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Frok-cesnovar%2Fstan-distributions","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Frok-cesnovar%2Fstan-distributions/lists"}