ffc team mailing list archive

["Andy Ray Terrel" <aterrel@xxxxxxxxxxxx>]

Actually I get the error anytime I multiply two trial functions
together, for example.

family = "Lagrange"
shape = "triangle"
order = 1

SE = FiniteElement(family, shape, order)
VE = FiniteElement(family, shape, order)
MixedElement = SE + VE

tau_00,u = TrialFunctions(MixedElement)

a = (tau_00*u)*dx


-- Andy

On Thu, Oct 9, 2008 at 8:31 PM, Andy Ray Terrel <aterrel@xxxxxxxxxxxx> wrote:
> With the following form I'm getting the following error.  Any ideas?
>
> family = "Lagrange"
> shape = "triangle"
> order = 2
>
> SE = FiniteElement(family, shape, order-1)
> VE = VectorElement(family, shape, order)
> MixedElement = SE + VE
>
> S_00,v = TestFunctions(MixedElement)
> tau_00,u = TrialFunctions(MixedElement)
>
> a = (S_00*(tau_00*D(u[0],0)))*dx
>
>
> ----------
>
> $ ffc -d1 TensorTest.form
> This is FFC, the FEniCS Form Compiler, version 0.5.0.
> For further information, go to http://www.fenics.org/ffc/.
>
> Preprocessing form file: TensorTest.form --> TensorTest.py
>
> Phase 1: Analyzing form
> -----------------------
>
>  Checking validity of form... ok
>  Reassigning form indices... done
>  Checking validity of form... ok
>  Simplifying form...
>  Reassigning form indices...
>  done
>  Reassigning form indices... done
>  done
>  Checking validity of form... ok
>  Determining the range of the indices... done
>  Checking validity of form... ok
>  Extracting form data...
> Traceback (most recent call last):
>  File "/usr/local/bin/ffc", line 175, in <module>
>    sys.exit(main(sys.argv[1:]))
>  File "/usr/local/bin/ffc", line 102, in main
>    execfile(outname, ns)
>  File "TensorTest.py", line 22, in <module>
>    compile([a, L, M, element], "TensorTest", {'language': 'ufc',
> 'blas': False, 'form_postfix': True, 'precision': '15',
> 'split_implementation': False, 'quadrature_points': False,
> 'representation': 'tensor', 'optimize': False})
>  File "/usr/local/lib/python2.5/site-packages/ffc/compiler/compiler.py",
> line 68, in compile
>    (form_data, form_representation) = __compile_forms(forms, prefix, options)
>  File "/usr/local/lib/python2.5/site-packages/ffc/compiler/compiler.py",
> line 95, in __compile_forms
>    form_data = analyze_form(form)
>  File "/usr/local/lib/python2.5/site-packages/ffc/compiler/compiler.py",
> line 187, in analyze_form
>    form_data = analyze(form)
>  File "/usr/local/lib/python2.5/site-packages/ffc/compiler/analysis/analyze.py",
> line 51, in analyze
>    form_data = FormData(form)
>  File "/usr/local/lib/python2.5/site-packages/ffc/compiler/analysis/formdata.py",
> line 60, in __init__
>    self.elements                     = self.__extract_elements(form,
> self.rank, self.num_coefficients)
>  File "/usr/local/lib/python2.5/site-packages/ffc/compiler/analysis/formdata.py",
> line 126, in __extract_elements
>    raise FormError, (form, "Unable to extract all elements")
> ffc.common.exceptions.FormError
>