Sherpa

Introduction

Installation
A quick guide to modeling and fitting in Sherpa
Sherpa and CIAO

User Documentation

What data is to be fit?
Creating model instances
Evaluating a model
Available Models
What statistic is to be used?
Optimisers: How to improve the current parameter values
Fitting the data
Visualization
Markov Chain Monte Carlo and Poisson data
Utility routines

Worked Examples

Simple Interpolation
Comparing Gaussian, Lorentzian, and Voigt 1D models
Simple user model

An interactive application

Using Sessions to manage models and data

Notebooks

Sherpa Quick Start
Notebook support in Sherpa
A sample of plots
Axis labelling
Viewing PHA responses
Asymmetric errors

Extra Functionality

Optimizing functions

Getting Help

Bug Reports
Contributing to Sherpa development
Indices and tables

Sherpa

Markov Chain Monte Carlo and Poisson data
The sherpa.sim module
flat
View page source

flat

sherpa.sim.flat(x)[source] [edit on github]: The flat prior (returns 1 everywhere).

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© Copyright 2019–2025, Chandra X-ray Center, Smithsonian Astrophysical Observatory. Last updated on 17 Jan 2025.

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