this method loads data from the database for report_mig but also fills the table of conversion coefficient, if
the taxa is eel. It also calls connect method for report_df-class,
report_dc-class and report_ope-class associated with the report
and used by the fungraph and fungraph_glasseel functions. As a side effect it assigns
objects report_dc-class, report_df-class and report_ope-class in environment envir_stacomi
# S4 method for report_mig_mult
connect(object, silent = FALSE)
An object of class report_mig_mult-class with slot @data filled from the database
An object of class report_mig_mult-class
Boolean, if TRUE messages are not displayed