Warning message "Production of NaN" using random_steps()

[Ali-mc]

I use your atm package since a few months now working on SSF analysis. I have a strange issue. For several days now, I have a warning message that I can’t solve. Here’s the running code:

dat_ssf <- dat_all %>% mutate(ssf=lapply(trk, function(x){x %>% amt:: track_resample(rate = hours(168), tolerance = hours(24))%>% amt:: filter_min_n_burst(min_n=5) %>% amt:: steps_by_burst() %>% amt:: random_steps(n_control=5) %>% amt:: extract_covariates(renec_hs_m) }))

What it strange is that I haven't changed anything in the code and I'm using the same data set than the previous week and it worked fine before, but since few days I have this warning message:

Warning message: There were 1007 warnings in mutate(). The first warning was: In argument: ssf = lapply(...). Caused by warning in dgamma(): ! Production of NaN

After testing line by line, the problem comes when I use random_sample(). Do you have any idea how I can correct this problem?

Thank you a lot,

Alice

[jmsigner]

There have been changes to random steps in recent updates. If the issues still need attention, please reopen.