Are examples for unit() out of date due to a breaking change?

[pa-nathaniel]

I am on Capr 2.0.7 and I tried following the example in

Capr/vignettes/Examples.Rmd

Lines 136 to 179 in e44ec1c

	**Persons with new type 2 diabetes mellitus at first dx rx or lab**
	https://atlas-phenotype.ohdsi.org/#/cohortdefinition/90
	```{r, eval=FALSE}
	library(Capr)
	cs0 <- cs(descendants(443238, 201820, 442793),
	descendants(exclude(195771, 201254, 435216, 761051, 4058243, 40484648)),
	name = "Type 2 diabetes mellitus (diabetes mellitus excluding T1DM and secondary)")
	cs1 <- cs(descendants(201254, 435216, 40484648),
	name = "Type 1 diabetes mellitus")
	cs2 <- cs(descendants(195771),
	name = "Secondary diabetes mellitus")
	cs3 <- cs(descendants(4184637, 37059902),
	name = "Hemoglobin A1c (HbA1c) measurements")
	cs4 <- cs(descendants(21600744),
	name = "Drugs for diabetes except insulin")
	ch <- cohort(
	entry = entry(
	conditionOccurrence(cs0),
	drugExposure(cs4),
	measurement(cs3, valueAsNumber(bt(6.5, 30)), unit("%")),
	measurement(cs3, valueAsNumber(bt(48, 99)), unit("mmol/mol")),
	observationWindow = continuousObservation(priorDays = 365)
	),
	attrition = attrition(
	'no T1D' = withAll(
	exactly(0, conditionOccurrence(cs1), duringInterval(eventStarts(-Inf, 0)))
	),
	'no secondary diabettes' = withAll(
	exactly(0, conditionOccurrence(cs2), duringInterval(eventStarts(-Inf, 0)))
	)
	),
	exit = exit(
	endStrategy = observationExit()
	)
	)

However it returned an error "Error in is.unit(x) : argument "x" is missing, with no default"

I was able to reduce it to the following calls:

library(Capr)

cs3 <- cs(descendants(4184637, 37059902),
          name = "Hemoglobin A1c (HbA1c) measurements")

measurement(cs3, valueAsNumber(bt(6.5, 30)), unit(units = "%"))

This gave me the error

Error in is.unit(x) : argument "x" is missing, with no default

I also tried running the code in

Capr/tests/testthat/test-attributes.R

Line 236 in e44ec1c

tt <- unit(8713L) #gram per deciliter

within the tests and also got an error

> tt <- unit(8713L)
Error in unit(8713L) : argument "units" is missing, with no default

My hypothesis is that there has been a breaking to unit() and the examples need to be updated. Is that right?

[pa-nathaniel]

My bad. It turns out I had a namespace conflict between grid::unit() and Capr::unit(). When I explicitly called Capr::unit() it worked fine.