Matthijs Hollanders
Matthijs Hollanders
Hi there, Sorry for the vague title. I'm trying to run a model with an ordinal covariate, but some missing values are present in the covariate. When I try to...
In some applications such as the forward algorithm for hidden Markov models, matrix multiplication can be used to compute the marginal probabilities if working on the probability scale. However, if...
Hi there, The follow code gives me the wrong sunrise and sunset times for eastern Australia; Google tells me sunset is at 17:38 AEST (UTC+10). ``` getSunlightTimes(date = ymd("2023-09-15"), lat...
Hi, I noticed that it's not possible to `facet_wrap()` a `ggmap()` object with free scales, so that each facet is essentially "zoomed in" on the relevant part of the map....
Hi, Sorry this is naive question as I'm not familiar with the future package. The model I'm using to specify the backend has within-chain parallelisation enabled. When creating the backend,...
Hi, I've got a model with lots of optional variables but SBC throws an error when I try to plot their ranks. Here's a reproducible example with the following Stan...
Hi, Unfortunately I don't have a reproducible example because this is just popping up with a few versions of a big model. When I fit the model with cmdstanr, the...
Hi there, I'm currently working on occupancy models specifically geared towards passive acoustic monitoring, where sites are allowed to chance occupancy state throughout the acoustic deployment period and the observation...
Hello everyone, The following Stan program: ```stan generated quantities { vector[3] theta = [0, 0.5, 0.5]'; vector[3] log_theta = log(theta); int test = categorical_rng(theta); // works int test2 = categorical_rng(exp(log_theta...
Hi, I'm trying to do some SBC with JAGS models with discrete parameters which require inits that are consistent with the data. Therefore, each dataset has its own corresponding set...