🚀 go-pugleaf

How do one do it?  I am new to explorer and can't find the answer either in
the manual or by experimenting (at least not within the time I have
available :-)

Can someone point me in the right direction as to how to read the follwoing
data into one or more latices (the data is in binary form, but that has not
been the problem):

  id1          (char[11] string of ASCII characters identifying data set 1)
  nobs1        (int: number of observations>
  junk         (real[20]: data I don't care about)
  data1        (int[5,nobs]: five data values I'm interested in with 
	                     data[1,i], the x-coordinate;  y-coordinates
                             can be taken to be 1,2,3,4...)
  id2           (data set 2)
  nobs2
  junk2
  data2
  id3
  nobs3
  ...

It was fairly straightforward to create a map that reads the first set of 
data into a lattice, but how do I tell it now to repeat that until it finds
an end of file?  The only way I can see is to define an array, but array
elements cannot be non-homogeneous (used here to indicate "consisting of
different types")

If I could define an array of structs, no problem ... :-)  (Even though the
data file does not say how many data sets there are, I can always find out
off-line).

Do I have to write my own input module rather than use datascribe?
Any help would be much appreciated.
-- 
Riel Smit,  Computer Science                              gds@cs.uct.ac.za
University of Cape Town                      gds%cs.uct.ac.za@rain.psg.com