A widget-driven interface that allows the user to examine any BDA file on
the data directories (or to display and accumulate the contents of a BDA
file already read in using YODAT) is the procedure WBDA. This routine
allows the user to interactively work with the data. If the data and index
array have not already been read in using YODAT, it is recommended that a
specific date be requested when running WBDA; a question concerning the
required date is asked if WBDA is called without any input parameters.
IDL> wbda,index,data
IDL> wbda