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Is this related to the problem we had with constant scalar
Lagrange, or is this some FFC problem?

Rob

---- Original message ----
>Date: Tue, 16 Aug 2005 15:53:33 +0200
>From: "Garth N. Wells" <g.n.wells@xxxxxxxxxxxxxxx>  
>Subject: [FFC-dev] Problem with vector constants (more the 3
components)  
>To: ffc-dev@xxxxxxxxxx
>
>An error message is returned with constant vector functions
when the number of
>vector components exceeds the spatial dimension. There seems
to be no problem
>with higher order functions. Below are some details and an
example.
>
>Garth 
>
>
>
>element = FiniteElement("Vector Lagrange", "triangle", 1)
>stress_basis  = FiniteElement("Discontinuous vector
Lagrange", "triangle", 0, 3)
>
>stress = Function(stress_basis) 
>
>v = BasisFunction(element)
>L = stress[2]*v[0].dx(0) *dx 
> 
>returns an error for constant "stress_basis". The error is 
>
>
>
>Traceback (most recent call last):
>  File "/usr/bin/ffc", line 81, in ?
>    main(sys.argv[1:])
>  File "/usr/bin/ffc", line 59, in main
>    execfile(outname)
>  File "test.py", line 33, in ?
>    compile([a, L], name, "C++", "GNU GPL Version 2")
>  File
"/usr/lib/python2.4/site-packages/ffc/compiler/compiler.py",
line 42, in
>compile
>    forms = build(sums, name, language)
>  File
"/usr/lib/python2.4/site-packages/ffc/compiler/compiler.py",
line 93, in
>build
>    form.AKi = ElementTensor(form.sum, "interior", format)
>  File
"/usr/lib/python2.4/site-packages/ffc/compiler/elementtensor.py",
line
>37, in __init__
>    self.terms = [Term(p) for p in sum.products if
p.integral.type == type]
>  File
"/usr/lib/python2.4/site-packages/ffc/compiler/term.py", line
19, in __init__
>    self.A0 = ReferenceTensor(product)
>  File
"/usr/lib/python2.4/site-packages/ffc/compiler/referencetensor.py",
line
>58, in __init__
>    self.A0 = self.__compute_reference_tensor()
>  File
"/usr/lib/python2.4/site-packages/ffc/compiler/referencetensor.py",
line
>121, in __compute_reference_tensor
>    integral += integrate(self.basisfunctions, i, a, b)
>  File
"/usr/lib/python2.4/site-packages/ffc/compiler/integrator.py",
line 113,
>in __call__
>    value =
self.table[element][cindex[0]][dorder][dindex][vindex]
>IndexError: list index out of range
>
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