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DEFINITION MODULE MatInterpol; (******************************************************************* Module MatInterpol (Version 1.0) Copyright (c) 1990-2006 by Olivier Roth, Andreas Fischlin and ETH Zurich. Purpose Interpolation in 2D and 1D tables. Remarks This module is part of the Mat-library, which forms part of the RAMSES package. Programming o Design Olivier Roth 14/05/1990 Andreas Fischlin 28/05/1993 o Implementation Olivier Roth 14/05/1990 Andreas Fischlin 28/05/1993 ETH Zurich Systems Ecology CHN E 35.1 Universitaetstrasse 16 8092 Zurich SWITZERLAND URLs: <mailto:RAMSES@env.ethz.ch> <http://www.sysecol.ethz.ch> <http://www.sysecol.ethz.ch/SimSoftware/RAMSES> Last revision of definition: 28/05/1993 AF *******************************************************************) FROM Matrices IMPORT Matrix; PROCEDURE YI ( m: Matrix; x: REAL ): REAL; (* returns linearly interpolated value between adjacent points given by the elements of 1-d m closest to x *) PROCEDURE YIE( m: Matrix; x: REAL ): REAL; (* like YI, but does also extrapolate *) PROCEDURE ZI ( m: Matrix; x,y: REAL ): REAL; (* returns linearly interpolated value between adjacent points given by the elements of 2-d m closest to point x,y *) PROCEDURE ZIE( m: Matrix; x,y: REAL ): REAL; (* like ZI, but does also extrapolate *) END MatInterpol.
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