link for qtime

[Stéphane Laurent]

Hello, 

The self-link does not work for a qtime graphics. For example :

library(nlme)
Remi <- Remifentanil[complete.cases(Remifentanil),]
Remi$ID <- factor(Remi$ID)
qRemi <- qdata(Remi)
qtime(Time, conc, qRemi, hdiv=ID)
Qanviz::PlotView instance
id <- link_cat(qRemi, "ID")

This has no effect on the brushing.

The link with another dataset does not work as well.