checking dependencies in R code ... NOTE
'library' or 'require' call to ‘ggplot2’ in package code.
Please use :: or requireNamespace() instead.
See section 'Suggested packages' in the 'Writing R Extensions' manual.
Package in Depends field not imported from: ‘microbenchmark’
These packages need to be imported from (in the NAMESPACE file)
for when this namespace is loaded but not attached.
checking R code for possible problems ... NOTE
determine_replications: no visible global function definition for
‘microbenchmark’
plot.timeit: no visible global function definition for ‘ggplot’
plot.timeit: no visible global function definition for ‘aes’
plot.timeit: no visible global function definition for ‘geom_boxplot’
plot.timeit: no visible global function definition for ‘geom_point’
plot.timeit: no visible global function definition for ‘xlab’
plot.timeit: no visible global function definition for ‘ylab’
plot.timeit: no visible global function definition for ‘ggtitle’
plot.timeit: no visible global function definition for ‘coord_flip’