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view subsSymfun.m @ 982:a0b3161e44f3 feature/getBoundaryOp

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Add the following methods in LaplaceCurvilinear: getBoundaryOperator, getBoundaryQuadrature, getBoundaryBorrowing. Remove get_boundary_ops. Make interface and boundary_condition methods use the new methods.
author Martin Almquist <malmquist@stanford.edu>
date Tue, 08 Jan 2019 11:51:24 +0100
parents 489bea7fc33f
children
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% Subs for a symfun
% f remains a symbolic function. If any of it's arguments is eliminated
% it is removed from the argument list while preserving the order of the
% other arguments
function f = subsSymfun(f, old, new)
    args = argnames(f);

    newExpr = subs(f, old, new);
    vars = symvar(subs(args, old, new));

    newArgs = args(ismember(args,vars));

    f = symfun(newExpr, newArgs);
end