It appears that supp_data<- doesn't look further than the internal scope when using print.ggghost, meaning that supplementary data is required to be defined rather than just possible. i.e. if the plot uses ysupp as supplementary data, but it isn't stored, then it isn't found even if it exists in the global environment.
Also, supp_data<- should be capable of storing more than one object.
It appears that
supp_data<-doesn't look further than the internal scope when usingprint.ggghost, meaning that supplementary data is required to be defined rather than just possible. i.e. if the plot usesysuppas supplementary data, but it isn't stored, then it isn't found even if it exists in the global environment.Also,
supp_data<-should be capable of storing more than one object.