Classe « Annotation »

Constructeur matplotlib.pyplot.Annotation.__init__

Signature de la constructeur __init__

def __init__(self, text, xy, xytext=None, xycoords='data', textcoords=None, arrowprops=None, annotation_clip=None, **kwargs) 

Description

__init__.__doc__

        Annotate the point *xy* with text *text*.

        In the simplest form, the text is placed at *xy*.

        Optionally, the text can be displayed in another position *xytext*.
        An arrow pointing from the text to the annotated point *xy* can then
        be added by defining *arrowprops*.

        Parameters
        ----------
        text : str
            The text of the annotation.

        xy : (float, float)
            The point *(x, y)* to annotate. The coordinate system is determined
            by *xycoords*.

        xytext : (float, float), default: *xy*
            The position *(x, y)* to place the text at. The coordinate system
            is determined by *textcoords*.

        xycoords : str or `.Artist` or `.Transform` or callable or (float, float), default: 'data'

            The coordinate system that *xy* is given in. The following types
            of values are supported:

            - One of the following strings:

              ==================== ============================================
              Value                Description
              ==================== ============================================
              'figure points'      Points from the lower left of the figure
              'figure pixels'      Pixels from the lower left of the figure
              'figure fraction'    Fraction of figure from lower left
              'subfigure points'   Points from the lower left of the subfigure
              'subfigure pixels'   Pixels from the lower left of the subfigure
              'subfigure fraction' Fraction of subfigure from lower left
              'axes points'        Points from lower left corner of axes
              'axes pixels'        Pixels from lower left corner of axes
              'axes fraction'      Fraction of axes from lower left
              'data'               Use the coordinate system of the object
                                   being annotated (default)
              'polar'              *(theta, r)* if not native 'data'
                                   coordinates
              ==================== ============================================

              Note that 'subfigure pixels' and 'figure pixels' are the same
              for the parent figure, so users who want code that is usable in
              a subfigure can use 'subfigure pixels'.

            - An `.Artist`: *xy* is interpreted as a fraction of the artist's
              `~matplotlib.transforms.Bbox`. E.g. *(0, 0)* would be the lower
              left corner of the bounding box and *(0.5, 1)* would be the
              center top of the bounding box.

            - A `.Transform` to transform *xy* to screen coordinates.

            - A function with one of the following signatures::

                def transform(renderer) -> Bbox
                def transform(renderer) -> Transform

              where *renderer* is a `.RendererBase` subclass.

              The result of the function is interpreted like the `.Artist` and
              `.Transform` cases above.

            - A tuple *(xcoords, ycoords)* specifying separate coordinate
              systems for *x* and *y*. *xcoords* and *ycoords* must each be
              of one of the above described types.

            See :ref:`plotting-guide-annotation` for more details.

        textcoords : str or `.Artist` or `.Transform` or callable or (float, float), default: value of *xycoords*
            The coordinate system that *xytext* is given in.

            All *xycoords* values are valid as well as the following
            strings:

            =================   =========================================
            Value               Description
            =================   =========================================
            'offset points'     Offset (in points) from the *xy* value
            'offset pixels'     Offset (in pixels) from the *xy* value
            =================   =========================================

        arrowprops : dict, optional
            The properties used to draw a `.FancyArrowPatch` arrow between the
            positions *xy* and *xytext*. Note that the edge of the arrow
            pointing to *xytext* will be centered on the text itself and may
            not point directly to the coordinates given in *xytext*.

            If *arrowprops* does not contain the key 'arrowstyle' the
            allowed keys are:

            ==========   ======================================================
            Key          Description
            ==========   ======================================================
            width        The width of the arrow in points
            headwidth    The width of the base of the arrow head in points
            headlength   The length of the arrow head in points
            shrink       Fraction of total length to shrink from both ends
            ?            Any key to :class:`matplotlib.patches.FancyArrowPatch`
            ==========   ======================================================

            If *arrowprops* contains the key 'arrowstyle' the
            above keys are forbidden.  The allowed values of
            ``'arrowstyle'`` are:

            ============   =============================================
            Name           Attrs
            ============   =============================================
            ``'-'``        None
            ``'->'``       head_length=0.4,head_width=0.2
            ``'-['``       widthB=1.0,lengthB=0.2,angleB=None
            ``'|-|'``      widthA=1.0,widthB=1.0
            ``'-|>'``      head_length=0.4,head_width=0.2
            ``'<-'``       head_length=0.4,head_width=0.2
            ``'<->'``      head_length=0.4,head_width=0.2
            ``'<|-'``      head_length=0.4,head_width=0.2
            ``'<|-|>'``    head_length=0.4,head_width=0.2
            ``'fancy'``    head_length=0.4,head_width=0.4,tail_width=0.4
            ``'simple'``   head_length=0.5,head_width=0.5,tail_width=0.2
            ``'wedge'``    tail_width=0.3,shrink_factor=0.5
            ============   =============================================

            Valid keys for `~matplotlib.patches.FancyArrowPatch` are:

            ===============  ==================================================
            Key              Description
            ===============  ==================================================
            arrowstyle       the arrow style
            connectionstyle  the connection style
            relpos           default is (0.5, 0.5)
            patchA           default is bounding box of the text
            patchB           default is None
            shrinkA          default is 2 points
            shrinkB          default is 2 points
            mutation_scale   default is text size (in points)
            mutation_aspect  default is 1.
            ?                any key for :class:`matplotlib.patches.PathPatch`
            ===============  ==================================================

            Defaults to None, i.e. no arrow is drawn.

        annotation_clip : bool or None, default: None
            Whether to draw the annotation when the annotation point *xy* is
            outside the axes area.

            - If *True*, the annotation will only be drawn when *xy* is
              within the axes.
            - If *False*, the annotation will always be drawn.
            - If *None*, the annotation will only be drawn when *xy* is
              within the axes and *xycoords* is 'data'.

        **kwargs
            Additional kwargs are passed to `~matplotlib.text.Text`.

        Returns
        -------
        `.Annotation`

        See Also
        --------
        :ref:`plotting-guide-annotation`