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Contents of /trunk/doc/user/changes.tex

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Revision 2484 - (show annotations)
Mon Jun 22 04:22:19 2009 UTC (9 years, 7 months ago) by gross
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numarray removed from docu; Locator revised.
2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3 %
4 % Copyright (c) 2009 by University of Queensland
5 % Earth Systems Science Computational Center (ESSCC)
6 % http://www.uq.edu.au/esscc
7 %
8 % Primary Business: Queensland, Australia
9 % Licensed under the Open Software License version 3.0
10 % http://www.opensource.org/licenses/osl-3.0.php
11 %
12 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
14 \section{Changes from previous releases}
15 \label{app:changes}
17 \subsection*{2.0 to 3.0}
18 \begin{itemize}
19 \item The major change here was replacing \module{numarray} with \numpy.
20 For general instructions on converting scripts to use numpy see \url{http://www.stsci.edu/resources/software_hardware/numarray/numarray2numpy.pdf}.
21 The specific changes to \escript are:
22 \begin{itemize}
23 \item getValueOfDataPoint() which returned a \module{numarray}.array has been replaced by
24 getTupleForDataPoint() which returns a \PYTHON tuple containing
25 the components of the data point. In the case of matricies or higher ranked data, the tuples will be nested. Use
26 \numpy.array(data.getTupleForDataPoint()) if a \numpyNDA object is required.
27 \item getValueOfGlobalDataPoint has similarly been replaced by getTupleForGlobalDataPoint().
28 \item integrate(data) now returns a \numpyNDA instead of a \module{numarray}.array.
29 \end{itemize}
30 Any python methods which previously accepted \module{numarray} objects will accept \numpy objects instead.
32 \item
33 The way solver options are defined for \LinearPDE objects has been changed. There is now a \SolverOptions object attached to the \LinearPDE object which is handeling the options of solvers used to solve the PDE. The following changes apply:
34 \begin{itemize}
35 \item The \method{setTolerance} and \method{setAbsoluteTolerance} methods have been removed. Use now \method{getSolverOptions().setTolerance}
36 and \method{getSolverOptions().setAbsoluteTolerance}
38 \item The \method{setSolverPackage} and \method{setSolverMethod} methods have been removed. Use now \method{getSolverOptions().setPackage},
39 \method{getSolverOptions().setSolverMethod} and
40 \method{getSolverOptions().setPreconditioner}.
42 \item The \method{setSolverPackage} and \method{setSolverMethod} methods have been removed. Use now \method{getSolverOptions().setPackage},
43 \method{getSolverOptions().setSolverMethod} and
44 \method{getSolverOptions().setPreconditioner}.
46 \item The static class variables defining packages, solvers and preconditioners have been removed and are now accessed via the corresponding static class variables in \SolverOptions. For instance use \method{SolverOptions.PCG} instead of
47 \method{LinearPDE.PCG} to select the preconditioned conjugate gradient method.
49 \item The \method{getSolution} takes now no argument. Use the corresponding
50 methods of the \SolverOptions object returned by \method{getSolverOptions()}
51 to set values, e.g. use
52 \method{getSolverOptions().setVerbosityOn()} instead of argument \code{verbose=True}
53 and \method{getSolverOptions().setIterMax(1000)} instead of argument \code{iter_max=1000}
54 \end{itemize}
57 \end{itemize}

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