R version issues about antsr HOT 3 CLOSED

I think the problem (for R >=4.2) is here over in ANTsRCore:

https://github.com/ANTsX/ANTsRCore/blob/1c79a80c3e03216c2456b0f81d8628dbc91859d7/R/antsRegistration.R#L393-L395

The breaking change in R 4.2.0 is documented in R news as follows:

Calling if() or while() with a condition of length greater than one gives an error rather than a warning. Consequently, environment variable R_CHECK_LENGTH_1_CONDITION no longer has any effect.

I guess you can do something like

if (all(is.na(initx))) { 
   initx = paste("[", f, ",", m, ",1]", sep = "") 
 } 

to ensure that the result is a logical of length 1 or check for whatever else distinguishes between the signalling value of NA vs when initx contains a transform.

from antsr.

Fix works fine, thank you.

I wonder if this needs to be committed to the repo? Because this is going to fail for anyone who has more than items in the transform. if this is a frowned upon thing (i.e., the goal of transformList is only to pass a single transform, like a prior affine), than perhaps documentation needs to be updated.

from antsr.

In the current implementation, multiple transform files should be allowed, but multiple linear antsTransform objects are not. There's some manipulation of the antsTransform objects that I don't understand, so I've left it alone. But it should support using a vector of file names like my_registration$fwdtransforms. Fixed and documented in #397

from antsr.