Constant

class dolfin.cpp.function.Constant(*args)

Bases: dolfin.cpp.function.Expression

This class represents a constant-valued expression.

Overloaded versions

• Constant(value)

  Create scalar constant

  Arguments

  value (float)

  The scalar to create a Constant object from.

  Example

  Note

  No example code available for this function.

• Constant(value0, value1)

  Create vector constant (dim = 2)

  Arguments

  value0 (float)

  The first vector element.

  value1 (float)

  The second vector element.

  Example

  Note

  No example code available for this function.

• Constant(value0, value1, value2)

  Create vector constant (dim = 3)

  Arguments

  value0 (float)

  The first vector element.

  value1 (float)

  The second vector element.

  value2 (float)

  The third vector element.

  Example

  Note

  No example code available for this function.

• Constant(values)

  Create vector-valued constant

  Arguments

  values (numpy.array(float))

  Values to create a vector-valued constant from.

• Constant(value_shape, values)

  Create tensor-valued constant for flattened array of values

  Arguments

  value_shape (numpy.array(int))

  Shape of tensor.

  values (numpy.array(float))

  Values to create tensor-valued constant from.

• Constant(constant)

  Copy constructor

  Arguments

  constant (Constant)

  Object to be copied.

assign()

Overloaded versions

• operator=(constant)

  Assignment operator

  Arguments

  constant (Constant)

  Another constant.

• operator=(constant)

  Assignment operator

  Arguments

  constant (float)

  Another constant.

thisown

The membership flag