DSM with soap film smoother

[Phil Bouchet]

Dear listfolks,

I am trying to run a dsm model that includes a soap film smoother in order to accommodate the complex shape of a coastal study area (with peninsulae, islands etc.). I have followed the steps described in the dolphin dsm example here (http://distancesampling.org/R/vignettes/mexico-analysis.html), however I keep running into the below error when fitting the model:

Error in get(as.character(match.call()$knots)) : 

  first argument has length > 1

Does anyone know what might be causing this issue?

Many thanks in advance,

Best, Phil 

[Phil Bouchet]

Dear listfolks,

Just wanted to post a quick update (and solution) to this thread for anyone who may also experience the same issue.

The dsm function requires the soap film knots to be available as standalone R objects (due to the way they are being called by internal functions).

The error above stemmed from the fact that my grids of knots were stored inside a list object – this meant that dsm couldn't access the appropriate data using the get() function.

Cheers, Phil