Travis complains about a few things, try to resolve the notes
These were most likely included in error. See section ‘Package
structure’ in the ‘Writing R Extensions’ manual.checking top-level files ... NOTE
Non-standard files/directories found at top level:
‘ggparty.Rproj’ ‘project_description.pdf’ ‘README_files’ ‘README.Rmd’
‘useful_links.txt’checking R code for possible problems ... NOTE
adjust_mapping: no visible global function definition for ‘modifyList’
geom_edge: no visible binding for global variable ‘x’
geom_edge: no visible binding for global variable ‘y’
geom_edge: no visible binding for global variable ‘x_parent’
geom_edge: no visible binding for global variable ‘y_parent’
geom_edge_label: no visible binding for global variable ‘index’
geom_node_info: no visible binding for global variable ‘info’
geom_node_splitvar: no visible binding for global variable ‘splitvar’
ggparty: no visible binding for global variable ‘x’
ggparty: no visible binding for global variable ‘y’
ggparty: no visible binding for global variable ‘x_parent’
ggparty: no visible binding for global variable ‘y_parent’
ggparty: no visible binding for global variable ‘kids’
ggparty: no visible binding for global variable ‘info’
Undefined global functions or variables:
index info kids modifyList splitvar x x_parent y y_parent
Consider adding
importFrom("utils", "modifyList")
to your NAMESPACE file.
Travis complains about a few things, try to resolve the notes