CHPOINT_EXTR.m

%--------------------------------------------------------------------------
% CHPOINT.EXTR
%--------------------------------------------------------------------------
% Extraction of a value from a CHPOINT object.

%--------------------------------------------------------------------------
% Syntax
%--------------------------------------------------------------------------
val1 = EXTR(CHP1,label1,loc1)
val1 = CHPOINT.EXTR(CHP1,label1,loc1)

%--------------------------------------------------------------------------
% Description
%--------------------------------------------------------------------------
% The EXTR public method of the CHPOINT class is used to extract the value 
% of a CHPOINT given the label of the physical group of finite elements and
% the local number of the dof.
% The label must correspond to a POINT object.

%--------------------------------------------------------------------------
% Input arguments
%--------------------------------------------------------------------------
% CHP1    : CHPOINT object
% label1  : STRING object describing the name of the physical group of
%              finite elements which support the CHPOINT
% loc1    : scalar, array - local number of the dofs

%--------------------------------------------------------------------------
% Output arguments
%--------------------------------------------------------------------------
% val1    : scalar, array - values of the dofs

%--------------------------------------------------------------------------
% Example
%--------------------------------------------------------------------------
SOL

SOL = 

  SOLUTION with properties:

            problem: [1x1 PROBLEM]
               mesh: [1x1 MESH]
           topology: [1x1 TOPOLOGY]
       displacement: [1x100 CHPOINT]
           velocity: []
       acceleration: []
       cham_element: [1x100 struct]
           reaction: [1x100 CHPOINT]
    internal_forces: [1x100 CHPOINT]
     eigenfrequency: []
          modeshape: []

UP4  = EXTR(SOL.displacement(end),'P4',[1 2])

UP4 =

   (1,1)       0.0116
   (1,2)      -0.0150