/usr/include/casacore/lattices/LEL.h is in casacore-dev 2.2.0-2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 | //# LEL.h: Lattice expression
//# Copyright (C) 1996,1997,1998,1999,2003
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//# $Id: Lattices.h 21521 2014-12-10 08:06:42Z gervandiepen $
#ifndef LATTICES_LEL_H
#define LATTICES_LEL_H
#include <casacore/lattices/LEL/LatticeExpr.h>
namespace casacore { //# NAMESPACE CASACORE - BEGIN
// <module>
// <summary>
// Lattice expressions.
// </summary>
// <prerequisite>
// <li> module <linkto module=Lattices>Lattices</linkto>
// </prerequisite>
// <reviewed reviewer="Peter Barnes" date="1999/10/30" demos="">
// </reviewed>
// <etymology>
// LEL: Lattice Expression Language.
// </etymology>
// <synopsis>
// A <linkto class=LatticeExpr>LatticeExpr</linkto> represents
// a mathematical expression of lattices. All standard operators, regions,
// and many, many <linkto class=LatticeExprNode>functions</linkto>
// can be used in an expression.
// <br> An expression is calculated on-the-fly. Thus only when
// the user gets a part of the lattice, is the expression calculated
// for that part. Subexpressions resulting in a scalar are calculated
// only once, on a get of the first part of the lattice expression.
// <br> Note that a lattice expression is not writable, thus using
// the put function on such a lattice results in an exception.
// <br> <a href="../notes/223.html">Note 223</a>
// gives a more detailed
// explanation of the capabilities of LEL (Lattice Expression Language).
// <p>
// If the expression consists of images, the result can also be
// treated as an image using class <linkto class=ImageExpr>ImageExpr</linkto>.
// With the <src>command</src> function in
// <linkto class=ImageExprParse>ImageExprParse</linkto> it is possible
// to parse and execute a LEL expression given as as a string.
// </module>
} //# NAMESPACE CASACORE - END
#endif
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