.. _func-UserFunctionMD: ============== UserFunctionMD ============== .. index:: UserFunctionMD Description ----------- A UserFunctionMD is the multi-dimensional equivalent of :ref:`UserFunction `. It is defined by a string formula. The formula is assigned by setting string attribute Formula: `` "name=UserFunctionMD,Formula=a + y + (b + 0.1*y) * x, a=0, b=2"`` The fitting parameters become defined only after the Formula attribute is set that is why Formula must go first in UserFunctionMD definition. .. attributes:: .. properties:: .. categories:: .. sourcelink::