This function is typically not needed by end users.
Value
The MD5 hash used to load the simplified nlmixrui object back
from the nlmixr2targets indirect cache.
Details
The object simplification removes comments (so please use label()
instead of comments to label parameters) and then converts the object
to a "nlmixrui" object.
Object metadata (ui$meta) and parameter labels (ui$iniDf$label) are
also stripped from the simplified object before it is written to the
indirect cache. They do not affect estimation, and stripping them keeps
the cache hash stable across edits to either, so editing only labels or
metadata will not invalidate the cached fit. The stripped values are
restored on the final fit by nlmixr_object_complicate(), which reads
them straight back off the original model.
The natural nlmixr2 DSL form for compartment initial conditions
(cmt(0) <- value inside a model({...}) block) trips targets'
static analysis because codetools::findGlobals() interprets it as
a replacement-function assignment with a non-symbol target.
tar_nlmixr() auto-rewrites cmt(0) <- value to cmt(initial) <- value
inside model({...}) blocks at construction time (mutating the
user's model function in env), and converts back to cmt(0) <- value
before nlmixr2 sees the model. The user can therefore write
cmt(0) <- value directly. Manual cmt(initial) <- value is also
still accepted. Note: because the rewrite mutates the function in
env, calling the model function directly (outside tar_make())
after tar_nlmixr() will see cmt(initial) in its body.
The simplified model's model.name is always set to "object". This keeps
the simplified output stable so that the MD5 hash used by the targets
indirect cache is independent of the symbol the caller bound the model
function to.
See also
nlmixr_object_complicate() for the inverse operation that
re-attaches labels, metadata, and the original data on the final fit.
Other Simplifiers:
nlmixr_data_simplify(),
nlmixr_object_complicate()