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Revision 495
(checked in by cbc, 12 years ago)
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Initial import of Stark code.
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% |
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% GRAD - Compute the gradient of a FEM 2-D scalar field |
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% |
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% GRAD(e,x,y,s) computes the divergence of a 2-D |
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% scalar field (s) over the FEM domain specified by the |
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% element list (e) and the corresponding horizontal node |
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% coordinates (x,y). The result is a 2-D vector field |
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% returned to the workspace. |
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% |
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% Call as: gd=grad(e,x,y,s); |
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% All arguments are REQUIRED. |
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% |
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% Written by: |
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% Brian O. Blanton |
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% Curr. in Marine Science |
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% 15-1A Venable Hall |
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% CB# 3300 |
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% Uni. of North Carolina |
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% Chapel Hill, NC |
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% 27599-3300 |
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% |
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% 919-962-4466 |
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% blanton@marine.unc.edu |
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function gr=grad(e,x,y,q) |
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if nargout~=1 |
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error('GRAD must have 1 (and only 1) output argument.') |
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else |
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[grdu grdv]=gradmex5(x,y,e,q); |
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gr=[grdu(:) grdv(:)]; |
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end |
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