Python matplotlib.transforms.IdentityTransform() Examples

def __init__(self, center, r, theta1, theta2, width=None, **kwargs):
        """
        Draw a wedge centered at *x*, *y* center with radius *r* that
        sweeps *theta1* to *theta2* (in degrees).  If *width* is given,
        then a partial wedge is drawn from inner radius *r* - *width*
        to outer radius *r*.

        Valid kwargs are:

        %(Patch)s
        """
        Patch.__init__(self, **kwargs)
        self.center = center
        self.r, self.width = r, width
        self.theta1, self.theta2 = theta1, theta2
        self._patch_transform = transforms.IdentityTransform()
        self._recompute_path() 

def _get_label(self):
        # x in axes coords, y in display coords (to be updated at draw
        # time by _update_label_positions)
        label = mtext.Text(x=0.5, y=0,
                           fontproperties=font_manager.FontProperties(
                               size=rcParams['axes.labelsize'],
                               weight=rcParams['axes.labelweight']),
                           color=rcParams['axes.labelcolor'],
                           verticalalignment='top',
                           horizontalalignment='center')

        label.set_transform(mtransforms.blended_transform_factory(
            self.axes.transAxes, mtransforms.IdentityTransform()))

        self._set_artist_props(label)
        self.label_position = 'bottom'
        return label 

def __init__(self, bbox1, bbox2, loc1, loc2=None, **kwargs):
        """
        *path* is a :class:`matplotlib.path.Path` object.

        Valid kwargs are:
        %(Patch)s

        .. seealso::

            :class:`Patch`
                For additional kwargs

        """
        if "transform" in kwargs:
           raise ValueError("transform should not be set")

        kwargs["transform"] = IdentityTransform()
        Patch.__init__(self, **kwargs)
        self.bbox1 = bbox1
        self.bbox2 = bbox2
        self.loc1 = loc1
        self.loc2 = loc2 

def __init__(self, center, r, theta1, theta2, width=None, **kwargs):
        """
        Draw a wedge centered at *x*, *y* center with radius *r* that
        sweeps *theta1* to *theta2* (in degrees).  If *width* is given,
        then a partial wedge is drawn from inner radius *r* - *width*
        to outer radius *r*.

        Valid kwargs are:

        %(Patch)s
        """
        Patch.__init__(self, **kwargs)
        self.center = center
        self.r, self.width = r, width
        self.theta1, self.theta2 = theta1, theta2
        self._patch_transform = transforms.IdentityTransform()
        self._recompute_path() 

def _get_label(self):
        # x in axes coords, y in display coords (to be updated at draw
        # time by _update_label_positions)
        label = mtext.Text(x=0.5, y=0,
            fontproperties=font_manager.FontProperties(
                               size=rcParams['axes.labelsize'],
                               weight=rcParams['axes.labelweight']),
            color=rcParams['axes.labelcolor'],
            verticalalignment='top',
            horizontalalignment='center',
            )

        label.set_transform(mtransforms.blended_transform_factory(
            self.axes.transAxes, mtransforms.IdentityTransform()))

        self._set_artist_props(label)
        self.label_position = 'bottom'
        return label 

def __init__(self, axis_artist, line_path, transform,
                     line_mutation_scale):
            self._axis_artist = axis_artist
            self._line_transform = transform
            self._line_path = line_path
            self._line_mutation_scale = line_mutation_scale

            FancyArrowPatch.__init__(self,
                                     path=self._line_path,
                                     arrowstyle=self._ARROW_STYLE,
                                     arrow_transmuter=None,
                                     patchA=None,
                                     patchB=None,
                                     shrinkA=0.,
                                     shrinkB=0.,
                                     mutation_scale=line_mutation_scale,
                                     mutation_aspect=None,
                                     transform=IdentityTransform(),
                                     ) 

def __init__(self, xy, width, height, angle=0.0, **kwargs):
        """
        *xy*
          center of ellipse

        *width*
          total length (diameter) of horizontal axis

        *height*
          total length (diameter) of vertical axis

        *angle*
          rotation in degrees (anti-clockwise)

        Valid kwargs are:
        %(Patch)s
        """
        Patch.__init__(self, **kwargs)

        self.center = xy
        self.width, self.height = width, height
        self.angle = angle
        self._path = Path.unit_circle()
        # Note: This cannot be calculated until this is added to an Axes
        self._patch_transform = transforms.IdentityTransform() 

def _get_label(self):
        # x in axes coords, y in display coords (to be updated at draw
        # time by _update_label_positions)
        label = mtext.Text(x=0.5, y=0,
            fontproperties=font_manager.FontProperties(
                               size=rcParams['axes.labelsize'],
                               weight=rcParams['axes.labelweight']),
            color=rcParams['axes.labelcolor'],
            verticalalignment='top',
            horizontalalignment='center',
            )

        label.set_transform(mtransforms.blended_transform_factory(
            self.axes.transAxes, mtransforms.IdentityTransform()))

        self._set_artist_props(label)
        self.label_position = 'bottom'
        return label 

def _get_label(self):
        # x in display coords (updated by _update_label_position)
        # y in axes coords
        label = mtext.Text(x=0, y=0.5,
            # todo: get the label position
            fontproperties=font_manager.FontProperties(
                               size=rcParams['axes.labelsize'],
                               weight=rcParams['axes.labelweight']),
            color=rcParams['axes.labelcolor'],
            verticalalignment='bottom',
            horizontalalignment='center',
            rotation='vertical',
            rotation_mode='anchor',
            )
        label.set_transform(mtransforms.blended_transform_factory(
            mtransforms.IdentityTransform(), self.axes.transAxes))

        self._set_artist_props(label)
        self.label_position = 'left'
        return label 

def __init__(self, xy, width, height, angle=0.0, **kwargs):
        """

        *angle*
          rotation in degrees (anti-clockwise)

        *fill* is a boolean indicating whether to fill the rectangle

        Valid kwargs are:
        %(Patch)s
        """

        Patch.__init__(self, **kwargs)

        self._x = xy[0]
        self._y = xy[1]
        self._width = width
        self._height = height
        self._angle = angle
        # Note: This cannot be calculated until this is added to an Axes
        self._rect_transform = transforms.IdentityTransform() 

def _get_label(self):
        # x in display coords (updated by _update_label_position)
        # y in axes coords
        label = mtext.Text(x=0, y=0.5,
                           # todo: get the label position
                           fontproperties=font_manager.FontProperties(
                               size=rcParams['axes.labelsize'],
                               weight=rcParams['axes.labelweight']),
                           color=rcParams['axes.labelcolor'],
                           verticalalignment='bottom',
                           horizontalalignment='center',
                           rotation='vertical',
                           rotation_mode='anchor')
        label.set_transform(mtransforms.blended_transform_factory(
            mtransforms.IdentityTransform(), self.axes.transAxes))

        self._set_artist_props(label)
        self.label_position = 'left'
        return label 

def __init__(self, xy, width, height, angle=0.0, **kwargs):
        """

        *angle*
          rotation in degrees (anti-clockwise)

        *fill* is a boolean indicating whether to fill the rectangle

        Valid kwargs are:
        %(Patch)s
        """

        Patch.__init__(self, **kwargs)

        self._x = xy[0]
        self._y = xy[1]
        self._width = width
        self._height = height
        self._angle = angle
        # Note: This cannot be calculated until this is added to an Axes
        self._rect_transform = transforms.IdentityTransform() 

def set_figure(self, fig):
        """
        Set the class:`~matplotlib.axes.Axes` figure

        accepts a class:`~matplotlib.figure.Figure` instance
        """
        martist.Artist.set_figure(self, fig)

        self.bbox = mtransforms.TransformedBbox(self._position,
                                                fig.transFigure)
        # these will be updated later as data is added
        self.dataLim = mtransforms.Bbox.null()
        self.viewLim = mtransforms.Bbox.unit()
        self.transScale = mtransforms.TransformWrapper(
            mtransforms.IdentityTransform())

        self._set_lim_and_transforms() 

def __init__(self, bbox1, bbox2, loc1, loc2=None, **kwargs):
        """
        *path* is a :class:`matplotlib.path.Path` object.

        Valid kwargs are:
        %(Patch)s

        .. seealso::

            :class:`Patch`
                For additional kwargs

        """
        if "transform" in kwargs:
           raise ValueError("transform should not be set")

        kwargs["transform"] = IdentityTransform()
        Patch.__init__(self, **kwargs)
        self.bbox1 = bbox1
        self.bbox2 = bbox2
        self.loc1 = loc1
        self.loc2 = loc2 

def __init__(self, xy, width, height, angle=0.0, **kwargs):
        """
        *xy*
          center of ellipse

        *width*
          total length (diameter) of horizontal axis

        *height*
          total length (diameter) of vertical axis

        *angle*
          rotation in degrees (anti-clockwise)

        Valid kwargs are:
        %(Patch)s
        """
        Patch.__init__(self, **kwargs)

        self.center = xy
        self.width, self.height = width, height
        self.angle = angle
        self._path = Path.unit_circle()
        # Note: This cannot be calculated until this is added to an Axes
        self._patch_transform = transforms.IdentityTransform() 

def __init__(self, xy, width, height, angle=0.0, **kwargs):
        """
        *xy*
          center of ellipse

        *width*
          total length (diameter) of horizontal axis

        *height*
          total length (diameter) of vertical axis

        *angle*
          rotation in degrees (anti-clockwise)

        Valid kwargs are:
        %(Patch)s
        """
        Patch.__init__(self, **kwargs)

        self.center = xy
        self.width, self.height = width, height
        self.angle = angle
        self._path = Path.unit_circle()
        # Note: This cannot be calculated until this is added to an Axes
        self._patch_transform = transforms.IdentityTransform() 

def __init__(self, center, r, theta1, theta2, width=None, **kwargs):
        """
        Draw a wedge centered at *x*, *y* center with radius *r* that
        sweeps *theta1* to *theta2* (in degrees).  If *width* is given,
        then a partial wedge is drawn from inner radius *r* - *width*
        to outer radius *r*.

        Valid kwargs are:

        %(Patch)s
        """
        Patch.__init__(self, **kwargs)
        self.center = center
        self.r, self.width = r, width
        self.theta1, self.theta2 = theta1, theta2
        self._patch_transform = transforms.IdentityTransform()
        self._recompute_path() 

def __init__(self, xy, width, height, angle=0.0, **kwargs):
        """

        *angle*
          rotation in degrees (anti-clockwise)

        *fill* is a boolean indicating whether to fill the rectangle

        Valid kwargs are:
        %(Patch)s
        """

        Patch.__init__(self, **kwargs)

        self._x = xy[0]
        self._y = xy[1]
        self._width = width
        self._height = height
        self._angle = angle
        # Note: This cannot be calculated until this is added to an Axes
        self._rect_transform = transforms.IdentityTransform() 

def _get_label(self):
        # x in display coords (updated by _update_label_position)
        # y in axes coords
        label = mtext.Text(x=0, y=0.5,
            # todo: get the label position
            fontproperties=font_manager.FontProperties(
                               size=rcParams['axes.labelsize'],
                               weight=rcParams['axes.labelweight']),
            color=rcParams['axes.labelcolor'],
            verticalalignment='bottom',
            horizontalalignment='center',
            rotation='vertical',
            rotation_mode='anchor',
            )
        label.set_transform(mtransforms.blended_transform_factory(
            mtransforms.IdentityTransform(), self.axes.transAxes))

        self._set_artist_props(label)
        self.label_position = 'left'
        return label 

def __init__(self, axis_artist, line_path, transform,
                     line_mutation_scale):
            self._axis_artist = axis_artist
            self._line_transform = transform
            self._line_path = line_path
            self._line_mutation_scale = line_mutation_scale

            FancyArrowPatch.__init__(self,
                                     path=self._line_path,
                                     arrowstyle=self._ARROW_STYLE,
                                     arrow_transmuter=None,
                                     patchA=None,
                                     patchB=None,
                                     shrinkA=0.,
                                     shrinkB=0.,
                                     mutation_scale=line_mutation_scale,
                                     mutation_aspect=None,
                                     transform=IdentityTransform(),
                                     ) 

def svgread(filename: str):
    """ read an SVG file """
    doc = minidom.parse(filename)

    svg = doc.getElementsByTagName("svg")[0]
    try:
        x1, y1, x2, y2 = [svgUnitToMpl(s.strip()) for s in svg.getAttribute("viewBox").split()]
        width, height = (x2 - x1)/plt.gcf().dpi, (y2 - y1)/plt.gcf().dpi
        if max([width, height]) > 8:
            f = 8/max([width, height])
            plt.gcf().set_size_inches(width*f, height*f)
        else:
            plt.gcf().set_size_inches(width, height)
    except ValueError:
        width = svgUnitToMpl(svg.getAttribute("width"), default=100)
        height = svgUnitToMpl(svg.getAttribute("height"), default=100)
        x1, y1, x2, y2 = 0, 0, width, height
        width /= plt.gcf().dpi
        height /= plt.gcf().dpi
        if max([width, height]) > 8:
            f = 8/max([width, height])
            plt.gcf().set_size_inches(width*f, height*f)
        else:
            plt.gcf().set_size_inches(width, height)
    ax = plt.axes([0, 0, 1, 1], label=filename, frameon=False)
    plt.xticks([])
    plt.yticks([])
    for spine in ["left", "right", "top", "bottom"]:
        ax.spines[spine].set_visible(False)
    plt.xlim(x1, x2)
    plt.ylim(y2, y1)

    parseGroup(doc.getElementsByTagName("svg")[0], mtransforms.IdentityTransform(), {}, {"css": []}) 

def _get_offset_text(self):
        # x in axes coords, y in display coords (to be updated at draw time)
        offsetText = mtext.Text(x=1, y=0,
            fontproperties=font_manager.FontProperties(
                                          size=rcParams['xtick.labelsize']),
            color=rcParams['xtick.color'],
            verticalalignment='top',
            horizontalalignment='right',
            )
        offsetText.set_transform(mtransforms.blended_transform_factory(
                self.axes.transAxes, mtransforms.IdentityTransform()))
        self._set_artist_props(offsetText)
        self.offset_text_position = 'bottom'
        return offsetText 

def _set_lim_and_transforms(self):
        """
        This is called once when the plot is created to set up all the
        transforms for the data, text and grids.
        """
        rot = 30

        #Get the standard transform setup from the Axes base class
        Axes._set_lim_and_transforms(self)

        # Need to put the skew in the middle, after the scale and limits,
        # but before the transAxes. This way, the skew is done in Axes
        # coordinates thus performing the transform around the proper origin
        # We keep the pre-transAxes transform around for other users, like the
        # spines for finding bounds
        self.transDataToAxes = (self.transScale +
                                (self.transLimits +
                                 transforms.Affine2D().skew_deg(rot, 0)))

        # Create the full transform from Data to Pixels
        self.transData = self.transDataToAxes + self.transAxes

        # Blended transforms like this need to have the skewing applied using
        # both axes, in axes coords like before.
        self._xaxis_transform = (transforms.blended_transform_factory(
            self.transScale + self.transLimits,
            transforms.IdentityTransform()) +
            transforms.Affine2D().skew_deg(rot, 0)) + self.transAxes

# Now register the projection with matplotlib so the user can select
# it. 

def test_start_with_moveto():
    # Should be entirely clipped away to a single MOVETO
    data = b"""
ZwAAAAku+v9UAQAA+Tj6/z8CAADpQ/r/KAMAANlO+v8QBAAAyVn6//UEAAC6ZPr/2gUAAKpv+v+8
BgAAm3r6/50HAACLhfr/ewgAAHyQ+v9ZCQAAbZv6/zQKAABepvr/DgsAAE+x+v/lCwAAQLz6/7wM
AAAxx/r/kA0AACPS+v9jDgAAFN36/zQPAAAF6Pr/AxAAAPfy+v/QEAAA6f36/5wRAADbCPv/ZhIA
AMwT+/8uEwAAvh77//UTAACwKfv/uRQAAKM0+/98FQAAlT/7/z0WAACHSvv//RYAAHlV+/+7FwAA
bGD7/3cYAABea/v/MRkAAFF2+//pGQAARIH7/6AaAAA3jPv/VRsAACmX+/8JHAAAHKL7/7ocAAAP
rfv/ah0AAAO4+/8YHgAA9sL7/8QeAADpzfv/bx8AANzY+/8YIAAA0OP7/78gAADD7vv/ZCEAALf5
+/8IIgAAqwT8/6kiAACeD/z/SiMAAJIa/P/oIwAAhiX8/4QkAAB6MPz/HyUAAG47/P+4JQAAYkb8
/1AmAABWUfz/5SYAAEpc/P95JwAAPmf8/wsoAAAzcvz/nCgAACd9/P8qKQAAHIj8/7cpAAAQk/z/
QyoAAAWe/P/MKgAA+aj8/1QrAADus/z/2isAAOO+/P9eLAAA2Mn8/+AsAADM1Pz/YS0AAMHf/P/g
LQAAtur8/10uAACr9fz/2C4AAKEA/f9SLwAAlgv9/8ovAACLFv3/QDAAAIAh/f+1MAAAdSz9/ycx
AABrN/3/mDEAAGBC/f8IMgAAVk39/3UyAABLWP3/4TIAAEFj/f9LMwAANm79/7MzAAAsef3/GjQA
ACKE/f9+NAAAF4/9/+E0AAANmv3/QzUAAAOl/f+iNQAA+a/9/wA2AADvuv3/XDYAAOXF/f+2NgAA
29D9/w83AADR2/3/ZjcAAMfm/f+7NwAAvfH9/w44AACz/P3/XzgAAKkH/v+vOAAAnxL+//04AACW
Hf7/SjkAAIwo/v+UOQAAgjP+/905AAB5Pv7/JDoAAG9J/v9pOgAAZVT+/606AABcX/7/7zoAAFJq
/v8vOwAASXX+/207AAA/gP7/qjsAADaL/v/lOwAALZb+/x48AAAjof7/VTwAABqs/v+LPAAAELf+
/788AAAHwv7/8TwAAP7M/v8hPQAA9df+/1A9AADr4v7/fT0AAOLt/v+oPQAA2fj+/9E9AADQA///
+T0AAMYO//8fPgAAvRn//0M+AAC0JP//ZT4AAKsv//+GPgAAojr//6U+AACZRf//wj4AAJBQ///d
PgAAh1v///c+AAB+Zv//Dz8AAHRx//8lPwAAa3z//zk/AABih///TD8AAFmS//9dPwAAUJ3//2w/
AABHqP//ej8AAD6z//+FPwAANb7//48/AAAsyf//lz8AACPU//+ePwAAGt///6M/AAAR6v//pj8A
AAj1//+nPwAA/////w=="""

    import base64
    if hasattr(base64, 'encodebytes'):
        # Python 3 case
        decodebytes = base64.decodebytes
    else:
        # Python 2 case
        decodebytes = base64.decodestring

    verts = np.fromstring(decodebytes(data), dtype='<i4')
    verts = verts.reshape((len(verts) // 2, 2))
    path = Path(verts)
    segs = path.iter_segments(transforms.IdentityTransform(), clip=(0.0, 0.0, 100.0, 100.0))
    segs = list(segs)
    assert len(segs) == 1
    assert segs[0][1] == Path.MOVETO 

def __init__(self, axes, spine_type, path, **kwargs):
        """
        - *axes* : the Axes instance containing the spine
        - *spine_type* : a string specifying the spine type
        - *path* : the path instance used to draw the spine

        Valid kwargs are:
        %(Patch)s
        """
        super(Spine, self).__init__(**kwargs)
        self.axes = axes
        self.set_figure(self.axes.figure)
        self.spine_type = spine_type
        self.set_facecolor('none')
        self.set_edgecolor(rcParams['axes.edgecolor'])
        self.set_linewidth(rcParams['axes.linewidth'])
        self.axis = None

        self.set_zorder(2.5)
        self.set_transform(self.axes.transData)  # default transform

        self._bounds = None  # default bounds
        self._smart_bounds = False

        # Defer initial position determination. (Not much support for
        # non-rectangular axes is currently implemented, and this lets
        # them pass through the spines machinery without errors.)
        self._position = None
        assert isinstance(path, matplotlib.path.Path)
        self._path = path

        # To support drawing both linear and circular spines, this
        # class implements Patch behavior two ways. If
        # self._patch_type == 'line', behave like a mpatches.PathPatch
        # instance. If self._patch_type == 'circle', behave like a
        # mpatches.Ellipse instance.
        self._patch_type = 'line'

        # Behavior copied from mpatches.Ellipse:
        # Note: This cannot be calculated until this is added to an Axes
        self._patch_transform = mtransforms.IdentityTransform() 

def parseTransformation(transform_text: str) -> mtransforms.Transform:
    """ convert a transform string in the svg file to a matplotlib transformation """
    base_trans = mtransforms.IdentityTransform()
    if transform_text is None or transform_text == "":
        return base_trans
    transformations_list = re.findall(r"\w*\([-.,\d\s]*\)", transform_text)
    for transform_text in transformations_list:
        data = [float(s) for s in re.findall(r"[-.\d]+", transform_text)]
        command = re.findall(r"^\w+", transform_text)[0]
        if command == "translate":
            try:
                ox, oy = data
            except ValueError:
                ox, oy = data[0], data[0]
            base_trans = mtransforms.Affine2D([[1, 0, ox], [0, 1, oy], [0, 0, 1]]) + base_trans
        elif command == "rotate":
            a = np.deg2rad(data[0])
            ca, sa = np.cos(a), np.sin(a)
            base_trans = mtransforms.Affine2D([[ca, -sa, 0], [sa, ca, 0], [0, 0, 1]]) + base_trans
        elif command == "scale":
            if len(data) >= 2:
                x, y = data
            else:
                x, y = data[0], data[0]
            base_trans = mtransforms.Affine2D([[x, 0, 0], [0, y, 0], [0, 0, 1]]) + base_trans
        elif command == "skewX":
            x, = data
            x = np.tan(x*np.pi/180)
            base_trans = mtransforms.Affine2D([[1, x, 0], [0, 1, 0], [0, 0, 1]]) + base_trans
        elif command == "skewY":
            y, = data
            y = np.tan(y*np.pi/180)
            base_trans = mtransforms.Affine2D([[1, 0, 0], [y, 1, 0], [0, 0, 1]]) + base_trans
        elif command == "matrix":
            x, sy, sx, y, ox, oy = data
            base_trans = mtransforms.Affine2D([[x, sx, ox], [sy, y, oy], [0, 0, 1]]) + base_trans
        else:
            print("ERROR: unknown transformation", transform_text)
    return base_trans 

def __init__(self, bbox, **kwargs):
        if "transform" in kwargs:
           raise ValueError("transform should not be set")

        kwargs["transform"] = IdentityTransform()
        Patch.__init__(self, **kwargs)
        self.bbox = bbox 

def get_tick_transform(self, axes):
        return IdentityTransform() #axes.transData 

def get_transform(self):
        """
        The transform for linear scaling is just the
        :class:`~matplotlib.transforms.IdentityTransform`.
        """
        return IdentityTransform() 

def set_bbox(self, rectprops):
        """
        Draw a bounding box around self.  rectprops are any settable
        properties for a rectangle, eg facecolor='red', alpha=0.5.

          t.set_bbox(dict(facecolor='red', alpha=0.5))

        If rectprops has "boxstyle" key. A FancyBboxPatch
        is initialized with rectprops and will be drawn. The mutation
        scale of the FancyBboxPath is set to the fontsize.

        ACCEPTS: rectangle prop dict
        """

        # The self._bbox_patch object is created only if rectprops has
        # boxstyle key. Otherwise, self._bbox will be set to the
        # rectprops and the bbox will be drawn using bbox_artist
        # function. This is to keep the backward compatibility.

        if rectprops is not None and "boxstyle" in rectprops:
            props = rectprops.copy()
            boxstyle = props.pop("boxstyle")
            bbox_transmuter = props.pop("bbox_transmuter", None)

            self._bbox_patch = FancyBboxPatch(
                                    (0., 0.),
                                    1., 1.,
                                    boxstyle=boxstyle,
                                    bbox_transmuter=bbox_transmuter,
                                    transform=mtransforms.IdentityTransform(),
                                    **props)
            self._bbox = None
        else:
            self._bbox_patch = None
            self._bbox = rectprops