Sequences, hyperslabs and selections

Roberto De Almeida roberto at dealmeida.net
Mon May 29 14:05:47 PDT 2006


Hi, all. A quick question:

If a client applies both a hyperslab and a selection on a sequence,
what is the order of precedence? Eg, if I have the following dataset:

  Dataset {
    Sequence {
      Float64 lat;
      Float46 lon;
    } coastline;
  } coastline.db;

And a client requests the following URL:

  http://example.com/coastline.db.dods?coastline[0:1:9]&coastline.lat>80

Am I right to assume that the hyperslab should be applied *after*
(return the first 10 items were latitude is greater than 80) the
selection? This is not clear on the DAP 2 draft.

Thanks,
Roberto



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