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    "# Frequently Asked Quetsions\n",
    "\n",
    "This Notebook goes through some frequently asked questions about `eddy`."
   ]
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    "_How do I change the priors?_\n",
    "\n",
    "You want to use the `set_prior` function. This has three arguements, the name of the prior, the values of the prior and the type of prior. Two types of priors can be used: flat, uniform priors, `'flat'`, or Gaussian priors, `'gaussian'`. For the flat priors the two values define the minimum and maximum value, while for the Gaussian priors the values specify the mean and standard deviation of Gaussian.\n",
    "\n",
    "```python\n",
    "cube.set_prior('vlsr', [-20e3, 20e3], 'flat')  # uniform prior\n",
    "cube.set_prior('x0', [0.0, 0.05], 'gaussian')  # gaussian prior\n",
    "```"
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