.. _ws_quasi_stationary_icon:


ws_quasi_stationary
===============================================

.. container::
    
    .. container:: leftside

        .. image:: /_static/WS_QUASISTATIONARY.png
           :width: 48px

    .. container:: rightside

		Defines a quasi-stationary front :ref:`Weather Symbol Object <weather_symbols>` that can be visualised with :func:`plot`.
		
		.. include:: /api/icon_desc/include/ws.rst


		.. note:: This function performs the same task as the **Ws Quasi Stationary** icon in Metview’s :ref:`user interface <user_interface>`. It accepts its parameters as keyword arguments, described below.


.. py:function:: ws_quasi_stationary(**kwargs)
  
    Defines a quasi-stationary front :ref:`Weather Symbol Object <weather_symbols>`.


    :param warm_colour: Colour of the warm front segment.
    :type warm_colour: str, default: "red"

    :param cold_colour: Colour of the cold front segment.
    :type cold_colour: str, default: "blue"

    :param type: Specifies the front type.
    :type type: {"surface", "upper", "frontogenesis", "frontolysis"}, default: "surface"

    :param line_thickness: Thickness of the front curve.
    :type line_thickness: number, default: 1

    :param symbol_width: Width of the triangle/semi-circle symbol.
    :type symbol_width: number, default: 10

    :param symbol_gap: Width of the gap between two symbol pairs.
    :type symbol_gap: number, default: 15

    :param symbol_orientation: Orientation of the triangle symbols.
    :type symbol_orientation: {"left", "right"}, default: "right"

    :param x: The x coordinates of the control points of the curve. At least two points must be specified.
    :type x: ndarray or list of numbers, default: 0

    :param y: The y coordinates of the control points of the curve. At least two points must be specified.
    :type y: ndarray or list of numbers, default: 0

    :param geolock: Sets the geolock on the item for interactive editing in the plot window.
    :type geolock: on_off, default: off

    :param tooltip: Text that appears as a tooltip when the visualised object is hovered over in Metview's plot window.
    :type tooltip: str

    :rtype: :class:`Request`

.. mv-minigallery:: ws_quasi_stationary