Ven Popov

Color selection not reproducible with set.seed

3

``` set.seed(1985) randomColor(N, hue='orange') ``` This should produce the same output every time its run.

custom families and `mu` parameter

3

Hi Paul, Currently brms requires that all families have a mu parameter, which is then interpreted as the parameter predicted by the formula with the response variable. For custom families,...

fixing mu parameter via mu = some_value?

2

Currently there are two ways to fix model parameters to a constant. The older one is via a constant prior, and this works for any parameter: ``` prior(constant(3), class =...

(potentially) Incorrect output of pvon_mises()

2

This seems like a substantial bug with the output of pvon_mises(), i.e., the CDF of the von_mises distribution: ## brms::pvon_mises() pvon_mises(mu,mu) should be 0, but it's not: ```{r} i =...

Add special case for derivative of modified_bessel_function(0,x) to greatly improve model estimation speed

1

## Description As described [here](https://github.com/stan-dev/math/issues/3008), evaluating the derivative of modified_bessel_function(0,x) can be sped up dramatically with a simple change. Issue 3008 described how to do that for the von_mises_lpdf, where...

Here's a reproducible example: ``` --- title: "abc" output: rmarkdown::html_vignette vignette: > %\VignetteIndexEntry{abc} %\VignetteEngine{knitr::rmarkdown} %\VignetteEncoding{UTF-8} --- Does this footnote[^footnote-1] work? [^footnote-1]: $\theta$ is a parameter. ``` When I knit in...

Allow a global option to supress messages when using testthat

3

I'd like to reopen #1746. I understand that in testthat 3e it is deliberate that all messages are printed when testthat runs, and that I can handle individual messages with...

Expose new stan args

11

#### Submission Checklist - [ X] Run unit tests - [ X] Declare copyright holder and agree to license (see below) #### Summary Expose the new arguments save_metric and save_cmdstan_config...

Add the new Stan 2.34 arguments save_metric and save_cmdstan_config

2

Stan 2.34 added two new arguments: - save_metric: save the inv_metric to a json file - save_cmdstan_config: saves what is normally the header of the csvs in separate files It...

Add a function for generating initial values from a CmdStanMCMC object, csv files or a draws object

5

#### Submission Checklist - [X ] Run unit tests - [ X] Declare copyright holder and agree to license (see below) #### Summary I initially built these functions for another...