.. highlightlang:: us

.. index:: Data=>3D-Dataset=>Hull
.. index:: y^data-3d-dataset-hull

.. _data-3d-dataset-hull:

Data=>3D-Dataset=>Hull
----------------------

Use this dialog box to specify the data hull for the selected 3D 
dataset. The hull is a boundary within which isolines will be drawn.

.. image:: S:/uniplot-obj/images/Data3DDatasetHull-en.*

.. us.dlgitem

**No Hull**
   Draws the isolines to the diagram border. The grid 
   points lying outside of the data hull will be extrapolated. In this 
   case, the non-linear interpolation option should be chosen.

.. us.dlgitem

**North Line**
   Only the north line (Wide Open Throttle) of the 
   hull will be plotted when this option is chosen (see Definition of the 
   Full Load Line in the User Manual for more information). The isolines 
   will be clipped at the border.

.. us.dlgitem

**North Line (Spline)**
   The points on the North Line will be 
   connected with a spline. Isolines will be clipped at the Hull.

.. us.dlgitem

**Entire Hull**
   Plots entire border. That part of the border 
   which does not belong to the North Line will be drawn as a convex 
   hull. Isolines will be clipped at the border.

.. us.dlgitem

**Entire Hull (Spline)**
   The points of the entire hull will be 
   connected with a spline when this option is chosen. The rest will be 
   connected with a polygon.

.. us.dlgitem

**User Defined**
   A previously defined Hull will appear if you 
   choose this option. A User Hull can be loaded to the selected dataset 
   with the :ref:`filemore-file-functionsload-3d-data-hull` function.

.. us.dlgitem

**Line Style**
   Sets a line style for the hull line.

.. us.dlgitem

**Isoline**
   In the **Isoline** group, you can decide if the contour 
   map hull should be labeled with z-values. Labels can be positioned 
   horizontally or vertically. The **Distance** edit field sets the distance 
   between the hull and the label.

3D Surface Plot:

.. us.dlgitem

**Clip against Hull**
   When this option is selected, only the 
   facets that lie completely within the hull will be plotted.

.. us.dlgitem

**Extrapolate outside Hull**
   The 3D surface will be drawn up to 
   the coordinate boundaries. In this case, you should also use the 
   non-linear interpolation process (see :ref:`datainterpolation`). Any 
   data outside of the hull will be extrapolated.

.. us.dlgitem

**Set Z-Value To**
   Sets all surface facets lying partly or 
   completely outside the data hull to a constant value.

.. seealso::
   :ref:`dialog-boxsymbol-style`,
   :ref:`dialog-boxfont`,
   :ref:`data-3d-dataset-isolines`,
   :ref:`data-3d-dataset-3d-surface`

:sub:`id-327913`