====== Initial conditions ======
Initial conditions can be prescribed using the ''InitialConditionSet'' object, with a similar syntax to [[doc:user:conditions:displacements]]:

=== Old Metafor Version < 3545 ===
   icset = metafor.getInitialConditionSet()
   icset.define(target, field, ampl)
   icset.define(target, field, ampl, fctMultiChamps , fieldList)

=== New Metafor Version >= 3545 ===
   icset = domain.getInitialConditionSet()
   icset.define(target, field, ampl)
   icset.define(target, field, ampl, fctMultiChamps , fieldList)

where

|< 100% 8em - - >|
|''target''          | ''GObject''  | meshed geometric entity where the initial condition is prescribed |
|''field''           | ''Field1D''       | nodal variable to be prescribed          |
|''field''           | ''InternalField'' | Gauss-point variable to be prescribed    |
|''ampl''            | ''float''         | initial value                            |
|''fctMulti'' {{:doc:user:ico-advanced.png?18|Advanced}}   | ''[[doc:user:general:fonctions|Function]]'' | spatial dependence |
|''fieldList'' {{:doc:user:ico-advanced.png?18|Advanced}}  |              | list of dependency fields   |

\\
__Examples:__ \\
Initial temperature of 20°C for a volume:
   icset = metafor.getInitialConditionSet()
   icset.define(volumeset(1), Field1D(TO,AB), 20.0)

A space-dependent initial pressure at Gauss points:
   def pyFct(x, y):
      p = (2x+y)*1e4
      return p
   fctP = PythonMultiParameterFunction(pyFct, 2)
   
   icset = metafor.getInitialConditionSet()
   icset.define(sideset(1), IF_P, 1.0, fctP, FieldList(Field1D(TX,AB), Field1D(TY,AB)))