A tableiterator allows iteration through a table based on the contents
of one or more columns. Each step in the iteration process forms
a subset of the table for which the specified columns have the same value.
Example
vis:=table("3C273XC1.MS");
vis.summary();
visbyants:=tableiterator(vis, "ANTENNA1 ANTENNA2");
visbyants.reset();
while(visbyants.next()) {
nrows:=visbyants.table().nrows();
print "Antenna1 ", visbyants.table().getcell("ANTENNA1", 1),
" Antenna2 ", visbyants.table().getcell("ANTENNA2", 1),
": ", nrows, "samples";
}
This example iterates through the table on ANTENNA1 and ANTENNA2.
Thus each call to
next forms a (reference) table
containing the rows of a single baseline in the main table.
The
table function can be used to get access to the current
subset.
Note that a
next has to be done to get the first subset.
News 
