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SF.net SVN: matplotlib:[7262] trunk/matplotlib
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From: <lee...@us...> - 2009-07-14 21:24:12
|
Revision: 7262
http://matplotlib.svn.sourceforge.net/matplotlib/?rev=7262&view=rev
Author: leejjoon
Date: 2009-07-14 21:24:07 +0000 (Tue, 14 Jul 2009)
Log Message:
-----------
initial submission of the annotation guide.
Modified Paths:
--------------
trunk/matplotlib/CHANGELOG
trunk/matplotlib/doc/users/plotting.rst
Added Paths:
-----------
trunk/matplotlib/doc/users/plotting/annotation.rst
trunk/matplotlib/doc/users/plotting/examples/anchored_box01.py
trunk/matplotlib/doc/users/plotting/examples/anchored_box02.py
trunk/matplotlib/doc/users/plotting/examples/anchored_box03.py
trunk/matplotlib/doc/users/plotting/examples/anchored_box04.py
trunk/matplotlib/doc/users/plotting/examples/annotate_explain.py
trunk/matplotlib/doc/users/plotting/examples/annotate_simple01.py
trunk/matplotlib/doc/users/plotting/examples/annotate_simple02.py
trunk/matplotlib/doc/users/plotting/examples/annotate_simple03.py
trunk/matplotlib/doc/users/plotting/examples/annotate_simple04.py
trunk/matplotlib/doc/users/plotting/examples/annotate_text_arrow.py
trunk/matplotlib/doc/users/plotting/examples/axes_zoom_effect.py
trunk/matplotlib/doc/users/plotting/examples/connect_simple01.py
trunk/matplotlib/doc/users/plotting/examples/connectionstyle_demo.py
trunk/matplotlib/doc/users/plotting/examples/custom_boxstyle01.py
trunk/matplotlib/doc/users/plotting/examples/custom_boxstyle02.py
trunk/matplotlib/doc/users/plotting/examples/simple_annotate01.py
trunk/matplotlib/examples/pylab_examples/axes_zoom_effect.py
Modified: trunk/matplotlib/CHANGELOG
===================================================================
--- trunk/matplotlib/CHANGELOG 2009-07-14 21:18:58 UTC (rev 7261)
+++ trunk/matplotlib/CHANGELOG 2009-07-14 21:24:07 UTC (rev 7262)
@@ -1,3 +1,5 @@
+2009-07-14 initial submission of the annotation guide. -JJL
+
2009-07-14 axes_grid : minor improvements in anchored_artists and
inset_locator. -JJL
Added: trunk/matplotlib/doc/users/plotting/annotation.rst
===================================================================
--- trunk/matplotlib/doc/users/plotting/annotation.rst (rev 0)
+++ trunk/matplotlib/doc/users/plotting/annotation.rst 2009-07-14 21:24:07 UTC (rev 7262)
@@ -0,0 +1,332 @@
+.. _plotting-guide-annotation:
+
+****************
+Annotating Axes
+****************
+
+Do not proceed unless you already have read
+:func:`~matplotlib.pyplot.text` and :func:`~matplotlib.pyplot.annotate`!
+
+
+Annotating with Text with Box
+=============================
+
+Let's start with a simple example.
+
+.. plot:: users/plotting/examples/annotate_text_arrow.py
+
+
+The :func:`~matplotlib.pyplot.text` function in the pyplot module (or
+text method of the Axes class) takes bbox keyword argument, and when
+given, a box around the text is drawn. ::
+
+ bbox_props = dict(boxstyle="rarrow,pad=0.3", fc="cyan", ec="b", lw=2)
+ t = ax.text(0, 0, "Direction", ha="center", va="center", rotation=45,
+ size=15,
+ bbox=bbox_props)
+
+
+The patch object associated with the text can be accessed by::
+
+ bb = t.get_bbox_patch()
+
+The return value is an instance of FancyBboxPatch and the patch
+properties like facecolor, edgewidth, etc. can be accessed and
+modified as usual. To change the shape of the box, use *set_boxstyle*
+method. ::
+
+ bb.set_boxstyle("rarrow", pad=0.6)
+
+The arguments are the name of the box style with its attributes as
+keyword arguments. Currently, followign box styles are implemented.
+
+ ========== ============== ==========================
+ Class Name Attrs
+ ========== ============== ==========================
+ LArrow ``larrow`` pad=0.3
+ RArrow ``rarrow`` pad=0.3
+ Round ``round`` pad=0.3,rounding_size=None
+ Round4 ``round4`` pad=0.3,rounding_size=None
+ Roundtooth ``roundtooth`` pad=0.3,tooth_size=None
+ Sawtooth ``sawtooth`` pad=0.3,tooth_size=None
+ Square ``square`` pad=0.3
+ ========== ============== ==========================
+
+.. plot:: mpl_examples/pylab_examples/fancybox_demo2.py
+
+
+Note that the attrubutes arguments can be specified within the style
+name with separating comma (this form can be used as "boxstyle" value
+of bbox argument when initializing the text instance) ::
+
+ bb.set_boxstyle("rarrow,pad=0.6")
+
+
+
+
+Annotating with Arrow
+=====================
+
+The :func:`~matplotlib.pyplot.annotate` function in the pyplot module
+(or annotate method of the Axes class) is used to draw an arrow
+connecting two points on the plot. ::
+
+ ax.annotate("Annotation",
+ xy=(x1, y1), xycoords='data',
+ xytext=(x2, y2), textcoords='offset points',
+ )
+
+This annotates a point at ``xy`` in the given coordinate (``xycoords``)
+with the text at ``xytext`` given in ``textcoords``. Often, the
+annotated point is specified in the *data* coordinate and the annotating
+text in *offset points*.
+See :func:`~matplotlib.pyplot.annotate` for available coordinate systems.
+
+An arrow connecting two point (xy & xytext) can be optionally drawn by
+specifying the ``arrowprops`` argument. To draw only an arrow, use
+empty string as the first argument. ::
+
+ ax.annotate("",
+ xy=(0.2, 0.2), xycoords='data',
+ xytext=(0.8, 0.8), textcoords='data',
+ arrowprops=dict(arrowstyle="->",
+ connectionstyle="arc3"),
+ )
+
+.. plot:: users/plotting/examples/annotate_simple01.py
+
+The arrow drawing takes a few steps.
+
+1. a connecting path between two points are created. This is
+ controlled by ``connectionstyle`` key value.
+
+2. If patch object is given (*patchA* & *patchB*), the path is clipped to
+ avoid the patch.
+
+3. The path is further shrinked by given amount of pixels (*shirnkA*
+ & *shrinkB*)
+
+4. The path is transmuted to arrow patch, which is controlled by the
+ ``arrowstyle`` key value.
+
+
+.. plot:: users/plotting/examples/annotate_explain.py
+
+
+The creation of the connecting path between two points is controlled by
+``connectionstyle`` key and follwing styles are available.
+
+ ========== =============================================
+ Name Attrs
+ ========== =============================================
+ ``angle`` angleA=90,angleB=0,rad=0.0
+ ``angle3`` angleA=90,angleB=0
+ ``arc`` angleA=0,angleB=0,armA=None,armB=None,rad=0.0
+ ``arc3`` rad=0.0
+ ``bar`` armA=0.0,armB=0.0,fraction=0.3,angle=None
+ ========== =============================================
+
+Note that "3" in ``angle3`` and ``arc3`` is meant to indicate that the
+resulting path is a quadratic spline segment (three control
+points). As will be discussed below, some arrow style option only can
+be used when the connecting path is a quadratic spline.
+
+The behavior of each connection style is (limitedly) demonstrated in the
+example below. (Warning : The behavior of the ``bar`` style is currently not
+well defined, it may be changed in the future).
+
+.. plot:: users/plotting/examples/connectionstyle_demo.py
+
+
+The connecting path (after clipping and shrinking) is then mutated to
+an arrow patch, according to the given ``arrowstyle``.
+
+ ========== =============================================
+ Name Attrs
+ ========== =============================================
+ ``-`` None
+ ``->`` head_length=0.4,head_width=0.2
+ ``-[`` widthB=1.0,lengthB=0.2,angleB=None
+ ``-|>`` 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
+ ========== =============================================
+
+.. plot:: mpl_examples/pylab_examples/fancyarrow_demo.py
+
+Some arrowstyles only work with connection style that generates a
+quadratic-spline segment. They are ``fancy``, ``simple``, and ``wedge``.
+For these arrow styles, you must use "angle3" or "arc3" connection
+style.
+
+If the annotation string is given, the patchA is set to the bbox patch
+of the text by default.
+
+.. plot:: users/plotting/examples/annotate_simple02.py
+
+As in the text command, a box around the text can be drawn using
+the ``bbox`` argument.
+
+.. plot:: users/plotting/examples/annotate_simple03.py
+
+By default, the starting point is set to the center of the text
+extent. This can be adjusted with ``relpos`` key value. The values
+are normalized to the extent of the text. For example, (0,0) means
+lower-left corner and (1,1) means top-right.
+
+.. plot:: users/plotting/examples/annotate_simple04.py
+
+
+Using ConnectorPatch
+====================
+
+The ConnectorPatch is like an annotation without a text. While the
+annotate function is recommended in most of situation, the
+ConnectorPatch is useful when you want to connect points in different
+axes. ::
+
+ from matplotlib.patches import ConnectionPatch
+ xy = (0.2, 0.2)
+ con = ConnectionPatch(xyA=xy, xyB=xy, coordsA="data", coordsB="data",
+ axesA=ax1, axesB=ax2)
+ ax2.add_artist(con)
+
+The above code connects point xy in data coordinate of ``ax1`` to
+point xy int data coordiante of ``ax2``. Here is a simple example.
+
+.. plot:: users/plotting/examples/connect_simple01.py
+
+
+While the ConnectorPatch instance can be added to any axes, but you
+may want it to be added to the axes in the latter (?) of the axes
+drawing order to prevent overlap (?) by other axes.
+
+
+Placing Artist at the anchored location of the Axes
+===================================================
+
+There are class of artist that can be placed at the anchored location
+of the Axes. A common example is the legend. This type of artists can
+be created by using the OffsetBox class. A few predefined classes are
+available in ``mpl_toolkits.axes_grid.anchored_artists``. ::
+
+ from mpl_toolkits.axes_grid.anchored_artists import AnchoredText
+ at = AnchoredText("Figure 1a",
+ prop=dict(size=8), frameon=True,
+ loc=2,
+ )
+ at.patch.set_boxstyle("round,pad=0.,rounding_size=0.2")
+ ax.add_artist(at)
+
+
+.. plot:: users/plotting/examples/anchored_box01.py
+
+
+The *loc* keyword has same meaning as in the legend command.
+
+A simple application is when the size of the artist (or collection of
+artists) is knwon in pixel size during the time of creation. For
+example, If you want to draw a circle with fixed size of 20 pixel x 20
+pixel (radius = 10 pixel), you can utilize
+``AnchoredDrawingArea``. The instance is created with a size of the
+drawing area (in pixel). And user can add arbitrary artist to the
+drawing area. Note that the extents of the artists that are added to
+the drawing area has nothing to do with the placement of the drawing
+area itself. The initial size only matters. ::
+
+ from mpl_toolkits.axes_grid.anchored_artists import AnchoredDrawingArea
+
+ ada = AnchoredDrawingArea(20, 20, 0, 0,
+ loc=1, pad=0., frameon=False)
+ p1 = Circle((10, 10), 10)
+ ada.drawing_area.add_artist(p1)
+ p2 = Circle((30, 10), 5, fc="r")
+ ada.drawing_area.add_artist(p2)
+
+The artists that are added to the drawing area should not have
+transform set (they will be overridden) and the dimension of those
+artists are interpreted as a pixel coordinate, i.e., the radius of the
+circles in above example are 10 pixel and 5 pixel, respectively.
+
+.. plot:: users/plotting/examples/anchored_box02.py
+
+Sometimes, you want to your artists scale with data coordinate (or
+other coordinate than canvas pixel). You can use
+``AnchoredAuxTransformBox`` class. This is similar to
+``AnchoredDrawingArea`` except that the extent of the artist is
+determined during the drawing time respecting the specified transform. ::
+
+ from mpl_toolkits.axes_grid.anchored_artists import AnchoredAuxTransformBox
+
+ box = AnchoredAuxTransformBox(ax.transData, loc=2)
+ el = Ellipse((0,0), width=0.1, height=0.4, angle=30) # in data coordinates!
+ box.drawing_area.add_artist(el)
+
+The ellipse in the above example will have width and height
+corresponds to 0.1 and 0.4 in data coordinate and will be
+automatically scaled when the view limits of the axes change.
+
+.. plot:: users/plotting/examples/anchored_box03.py
+
+As in the legend, the bbox_to_anchor argument can be set. Using the
+HPacker and VPacker, you can have an arrangement(?) of artist as in the
+legend (as a matter of fact, this is how the legend is created).
+
+.. plot:: users/plotting/examples/anchored_box04.py
+
+Note that unlike the legend, the ``bbox_transform`` is set
+to IdentityTransform by default.
+
+Advanced Topics
+***************
+
+Zoom effect between Axes
+========================
+
+mpl_toolkits.axes_grid.inset_locator defines some patch classs useful
+for interconnect two axes. Understanding the code requires some
+knowledge of how mpl's transform works. But, utilizing it will be
+straight forward.
+
+
+.. plot:: mpl_examples/pylab_examples/axes_zoom_effect.py
+
+
+Define Custom BoxStyle
+======================
+
+You can use a custom box style. The value for the ``boxstyle`` can be a
+callable object in following forms.::
+
+ def __call__(self, x0, y0, width, height, mutation_size,
+ aspect_ratio=1.):
+ """
+ Given the location and size of the box, return the path of
+ the box around it.
+
+ - *x0*, *y0*, *width*, *height* : location and size of the box
+ - *mutation_size* : a reference scale for the mutation.
+ - *aspect_ratio* : aspect-ration for the mutation.
+ """
+ path = ...
+ return path
+
+Here is a complete example.
+
+.. plot:: users/plotting/examples/custom_boxstyle01.py
+
+However, it is recommended that you derive from the
+matplotlib.patches.BoxStyle._Base as demonstrated below.
+
+.. plot:: users/plotting/examples/custom_boxstyle02.py
+ :include-source:
+
+
+Similarly, you can define custom ConnectionStyle and Custome ArrowStyle.
+See the source code of ``lib/matplotlib/patches.py`` and check
+how each style class is defined.
Added: trunk/matplotlib/doc/users/plotting/examples/anchored_box01.py
===================================================================
--- trunk/matplotlib/doc/users/plotting/examples/anchored_box01.py (rev 0)
+++ trunk/matplotlib/doc/users/plotting/examples/anchored_box01.py 2009-07-14 21:24:07 UTC (rev 7262)
@@ -0,0 +1,14 @@
+import matplotlib.pyplot as plt
+from mpl_toolkits.axes_grid.anchored_artists import AnchoredText
+
+fig=plt.figure(1, figsize=(3,3))
+ax = plt.subplot(111)
+
+at = AnchoredText("Figure 1a",
+ prop=dict(size=15), frameon=True,
+ loc=2,
+ )
+at.patch.set_boxstyle("round,pad=0.,rounding_size=0.2")
+ax.add_artist(at)
+
+plt.show()
Added: trunk/matplotlib/doc/users/plotting/examples/anchored_box02.py
===================================================================
--- trunk/matplotlib/doc/users/plotting/examples/anchored_box02.py (rev 0)
+++ trunk/matplotlib/doc/users/plotting/examples/anchored_box02.py 2009-07-14 21:24:07 UTC (rev 7262)
@@ -0,0 +1,18 @@
+from matplotlib.patches import Circle
+import matplotlib.pyplot as plt
+from mpl_toolkits.axes_grid.anchored_artists import AnchoredDrawingArea
+
+fig=plt.figure(1, figsize=(3,3))
+ax = plt.subplot(111)
+
+
+ada = AnchoredDrawingArea(40, 20, 0, 0,
+ loc=1, pad=0., frameon=False)
+p1 = Circle((10, 10), 10)
+ada.drawing_area.add_artist(p1)
+p2 = Circle((30, 10), 5, fc="r")
+ada.drawing_area.add_artist(p2)
+
+ax.add_artist(ada)
+
+plt.show()
Added: trunk/matplotlib/doc/users/plotting/examples/anchored_box03.py
===================================================================
--- trunk/matplotlib/doc/users/plotting/examples/anchored_box03.py (rev 0)
+++ trunk/matplotlib/doc/users/plotting/examples/anchored_box03.py 2009-07-14 21:24:07 UTC (rev 7262)
@@ -0,0 +1,14 @@
+from matplotlib.patches import Ellipse
+import matplotlib.pyplot as plt
+from mpl_toolkits.axes_grid.anchored_artists import AnchoredAuxTransformBox
+
+fig=plt.figure(1, figsize=(3,3))
+ax = plt.subplot(111)
+
+box = AnchoredAuxTransformBox(ax.transData, loc=2)
+el = Ellipse((0,0), width=0.1, height=0.4, angle=30) # in data coordinates!
+box.drawing_area.add_artist(el)
+
+ax.add_artist(box)
+
+plt.show()
Added: trunk/matplotlib/doc/users/plotting/examples/anchored_box04.py
===================================================================
--- trunk/matplotlib/doc/users/plotting/examples/anchored_box04.py (rev 0)
+++ trunk/matplotlib/doc/users/plotting/examples/anchored_box04.py 2009-07-14 21:24:07 UTC (rev 7262)
@@ -0,0 +1,35 @@
+from matplotlib.patches import Ellipse
+import matplotlib.pyplot as plt
+from matplotlib.offsetbox import AnchoredOffsetbox, TextArea, DrawingArea, HPacker
+
+fig=plt.figure(1, figsize=(3,3))
+ax = plt.subplot(111)
+
+box1 = TextArea(" Test : ", textprops=dict(color="k"))
+
+box2 = DrawingArea(60, 20, 0, 0)
+el1 = Ellipse((10, 10), width=16, height=5, angle=30, fc="r")
+el2 = Ellipse((30, 10), width=16, height=5, angle=170, fc="g")
+el3 = Ellipse((50, 10), width=16, height=5, angle=230, fc="b")
+box2.add_artist(el1)
+box2.add_artist(el2)
+box2.add_artist(el3)
+
+
+box = HPacker(children=[box1, box2],
+ align="center",
+ pad=0, sep=5)
+
+anchored_box = AnchoredOffsetbox(loc=3,
+ child=box, pad=0.,
+ frameon=True,
+ bbox_to_anchor=(0., 1.02),
+ bbox_transform=ax.transAxes,
+ borderpad=0.,
+ )
+
+
+ax.add_artist(anchored_box)
+
+fig.subplots_adjust(top=0.8)
+plt.show()
Added: trunk/matplotlib/doc/users/plotting/examples/annotate_explain.py
===================================================================
--- trunk/matplotlib/doc/users/plotting/examples/annotate_explain.py (rev 0)
+++ trunk/matplotlib/doc/users/plotting/examples/annotate_explain.py 2009-07-14 21:24:07 UTC (rev 7262)
@@ -0,0 +1,103 @@
+
+import matplotlib.pyplot as plt
+import matplotlib.patches as mpatches
+
+x1, y1 = 0.3, 0.3
+x2, y2 = 0.7, 0.7
+
+fig = plt.figure(1, figsize=(8,3))
+fig.clf()
+from mpl_toolkits.axes_grid.axes_grid import AxesGrid
+from mpl_toolkits.axes_grid.anchored_artists import AnchoredText
+
+#from matplotlib.font_manager import FontProperties
+
+def add_at(ax, t, loc=2):
+ fp = dict(size=10)
+ _at = AnchoredText(t, loc=loc, prop=fp)
+ ax.add_artist(_at)
+ return _at
+
+
+grid = AxesGrid(fig, 111, (1, 4), label_mode="1", share_all=True)
+
+grid[0].set_autoscale_on(False)
+
+ax = grid[0]
+ax.plot([x1, x2], [y1, y2], ".")
+el = mpatches.Ellipse((x1, y1), 0.3, 0.4, angle=30, alpha=0.2)
+ax.add_artist(el)
+ax.annotate("",
+ xy=(x1, y1), xycoords='data',
+ xytext=(x2, y2), textcoords='data',
+ arrowprops=dict(arrowstyle="-", #linestyle="dashed",
+ color="0.5",
+ patchB=None,
+ shrinkB=0,
+ connectionstyle="arc3,rad=0.3",
+ ),
+ )
+
+add_at(ax, "connect", loc=2)
+
+ax = grid[1]
+ax.plot([x1, x2], [y1, y2], ".")
+el = mpatches.Ellipse((x1, y1), 0.3, 0.4, angle=30, alpha=0.2)
+ax.add_artist(el)
+ax.annotate("",
+ xy=(x1, y1), xycoords='data',
+ xytext=(x2, y2), textcoords='data',
+ arrowprops=dict(arrowstyle="-", #linestyle="dashed",
+ color="0.5",
+ patchB=el,
+ shrinkB=0,
+ connectionstyle="arc3,rad=0.3",
+ ),
+ )
+
+add_at(ax, "clip", loc=2)
+
+
+ax = grid[2]
+ax.plot([x1, x2], [y1, y2], ".")
+el = mpatches.Ellipse((x1, y1), 0.3, 0.4, angle=30, alpha=0.2)
+ax.add_artist(el)
+ax.annotate("",
+ xy=(x1, y1), xycoords='data',
+ xytext=(x2, y2), textcoords='data',
+ arrowprops=dict(arrowstyle="-", #linestyle="dashed",
+ color="0.5",
+ patchB=el,
+ shrinkB=5,
+ connectionstyle="arc3,rad=0.3",
+ ),
+ )
+
+add_at(ax, "shrink", loc=2)
+
+
+ax = grid[3]
+ax.plot([x1, x2], [y1, y2], ".")
+el = mpatches.Ellipse((x1, y1), 0.3, 0.4, angle=30, alpha=0.2)
+ax.add_artist(el)
+ax.annotate("",
+ xy=(x1, y1), xycoords='data',
+ xytext=(x2, y2), textcoords='data',
+ arrowprops=dict(arrowstyle="fancy", #linestyle="dashed",
+ color="0.5",
+ patchB=el,
+ shrinkB=5,
+ connectionstyle="arc3,rad=0.3",
+ ),
+ )
+
+add_at(ax, "mutate", loc=2)
+
+grid[0].set_xlim(0, 1)
+grid[0].set_ylim(0, 1)
+grid[0].axis["bottom"].toggle(ticklabels=False)
+grid[0].axis["left"].toggle(ticklabels=False)
+fig.subplots_adjust(left=0.05, right=0.95, bottom=0.05, top=0.95)
+
+plt.draw()
+plt.show()
Added: trunk/matplotlib/doc/users/plotting/examples/annotate_simple01.py
===================================================================
--- trunk/matplotlib/doc/users/plotting/examples/annotate_simple01.py (rev 0)
+++ trunk/matplotlib/doc/users/plotting/examples/annotate_simple01.py 2009-07-14 21:24:07 UTC (rev 7262)
@@ -0,0 +1,14 @@
+import matplotlib.pyplot as plt
+
+plt.figure(1, figsize=(3,3))
+ax = plt.subplot(111)
+
+ax.annotate("",
+ xy=(0.2, 0.2), xycoords='data',
+ xytext=(0.8, 0.8), textcoords='data',
+ arrowprops=dict(arrowstyle="->",
+ connectionstyle="arc3"),
+ )
+
+plt.show()
+
Added: trunk/matplotlib/doc/users/plotting/examples/annotate_simple02.py
===================================================================
--- trunk/matplotlib/doc/users/plotting/examples/annotate_simple02.py (rev 0)
+++ trunk/matplotlib/doc/users/plotting/examples/annotate_simple02.py 2009-07-14 21:24:07 UTC (rev 7262)
@@ -0,0 +1,15 @@
+import matplotlib.pyplot as plt
+
+plt.figure(1, figsize=(3,3))
+ax = plt.subplot(111)
+
+ax.annotate("Test",
+ xy=(0.2, 0.2), xycoords='data',
+ xytext=(0.8, 0.8), textcoords='data',
+ size=20, va="center", ha="center",
+ arrowprops=dict(arrowstyle="simple",
+ connectionstyle="arc3,rad=-0.2"),
+ )
+
+plt.show()
+
Added: trunk/matplotlib/doc/users/plotting/examples/annotate_simple03.py
===================================================================
--- trunk/matplotlib/doc/users/plotting/examples/annotate_simple03.py (rev 0)
+++ trunk/matplotlib/doc/users/plotting/examples/annotate_simple03.py 2009-07-14 21:24:07 UTC (rev 7262)
@@ -0,0 +1,17 @@
+import matplotlib.pyplot as plt
+
+plt.figure(1, figsize=(3,3))
+ax = plt.subplot(111)
+
+ann = ax.annotate("Test",
+ xy=(0.2, 0.2), xycoords='data',
+ xytext=(0.8, 0.8), textcoords='data',
+ size=20, va="center", ha="center",
+ bbox=dict(boxstyle="round4", fc="w"),
+ arrowprops=dict(arrowstyle="-|>",
+ connectionstyle="arc3,rad=-0.2",
+ fc="w"),
+ )
+
+plt.show()
+
Added: trunk/matplotlib/doc/users/plotting/examples/annotate_simple04.py
===================================================================
--- trunk/matplotlib/doc/users/plotting/examples/annotate_simple04.py (rev 0)
+++ trunk/matplotlib/doc/users/plotting/examples/annotate_simple04.py 2009-07-14 21:24:07 UTC (rev 7262)
@@ -0,0 +1,29 @@
+import matplotlib.pyplot as plt
+
+plt.figure(1, figsize=(3,3))
+ax = plt.subplot(111)
+
+ann = ax.annotate("Test",
+ xy=(0.2, 0.2), xycoords='data',
+ xytext=(0.8, 0.8), textcoords='data',
+ size=20, va="center", ha="center",
+ bbox=dict(boxstyle="round4", fc="w"),
+ arrowprops=dict(arrowstyle="-|>",
+ connectionstyle="arc3,rad=0.2",
+ relpos=(0., 0.),
+ fc="w"),
+ )
+
+ann = ax.annotate("Test",
+ xy=(0.2, 0.2), xycoords='data',
+ xytext=(0.8, 0.8), textcoords='data',
+ size=20, va="center", ha="center",
+ bbox=dict(boxstyle="round4", fc="w"),
+ arrowprops=dict(arrowstyle="-|>",
+ connectionstyle="arc3,rad=-0.2",
+ relpos=(1., 0.),
+ fc="w"),
+ )
+
+plt.show()
+
Added: trunk/matplotlib/doc/users/plotting/examples/annotate_text_arrow.py
===================================================================
--- trunk/matplotlib/doc/users/plotting/examples/annotate_text_arrow.py (rev 0)
+++ trunk/matplotlib/doc/users/plotting/examples/annotate_text_arrow.py 2009-07-14 21:24:07 UTC (rev 7262)
@@ -0,0 +1,38 @@
+
+import numpy.random
+import matplotlib.pyplot as plt
+
+fig = plt.figure(1, figsize=(5,5))
+fig.clf()
+
+ax = fig.add_subplot(111)
+ax.set_aspect(1)
+
+x1 = -1 + numpy.random.randn(100)
+y1 = -1 + numpy.random.randn(100)
+x2 = 1. + numpy.random.randn(100)
+y2 = 1. + numpy.random.randn(100)
+
+ax.scatter(x1, y1, color="r")
+ax.scatter(x2, y2, color="g")
+
+bbox_props = dict(boxstyle="round", fc="w", ec="0.5", alpha=0.9)
+ax.text(-2, -2, "Sample A", ha="center", va="center", size=20,
+ bbox=bbox_props)
+ax.text(2, 2, "Sample B", ha="center", va="center", size=20,
+ bbox=bbox_props)
+
+
+bbox_props = dict(boxstyle="rarrow", fc=(0.8,0.9,0.9), ec="b", lw=2)
+t = ax.text(0, 0, "Direction", ha="center", va="center", rotation=45,
+ size=15,
+ bbox=bbox_props)
+
+bb = t.get_bbox_patch()
+bb.set_boxstyle("rarrow", pad=0.6)
+
+ax.set_xlim(-4, 4)
+ax.set_ylim(-4, 4)
+
+plt.draw()
+plt.show()
Added: trunk/matplotlib/doc/users/plotting/examples/axes_zoom_effect.py
===================================================================
--- trunk/matplotlib/doc/users/plotting/examples/axes_zoom_effect.py (rev 0)
+++ trunk/matplotlib/doc/users/plotting/examples/axes_zoom_effect.py 2009-07-14 21:24:07 UTC (rev 7262)
@@ -0,0 +1 @@
+../../../../examples/pylab_examples/axes_zoom_effect.py
\ No newline at end of file
Added: trunk/matplotlib/doc/users/plotting/examples/connect_simple01.py
===================================================================
--- trunk/matplotlib/doc/users/plotting/examples/connect_simple01.py (rev 0)
+++ trunk/matplotlib/doc/users/plotting/examples/connect_simple01.py 2009-07-14 21:24:07 UTC (rev 7262)
@@ -0,0 +1,31 @@
+from matplotlib.patches import ConnectionPatch
+import matplotlib.pyplot as plt
+
+fig = plt.figure(1, figsize=(6,3))
+ax1 = plt.subplot(121)
+xyA=(0.2, 0.2)
+xyB=(0.8, 0.8)
+coordsA="data"
+coordsB="data"
+con = ConnectionPatch(xyA, xyB, coordsA, coordsB,
+ arrowstyle="-|>", shrinkA=5, shrinkB=5,
+ mutation_scale=20, fc="w")
+ax1.plot([xyA[0], xyB[0]], [xyA[1], xyB[1]], "o")
+ax1.add_artist(con)
+
+ax2 = plt.subplot(122)
+#xyA=(0.7, 0.7)
+xy=(0.3, 0.2)
+coordsA="data"
+coordsB="data"
+con = ConnectionPatch(xyA=xy, xyB=xy, coordsA=coordsA, coordsB=coordsB,
+ axesA=ax2, axesB=ax1,
+ arrowstyle="->", shrinkB=5)
+ax2.add_artist(con)
+
+ax1.set_xlim(0, 1)
+ax1.set_ylim(0, 1)
+ax2.set_xlim(0, .5)
+ax2.set_ylim(0, .5)
+plt.draw()
+plt.show()
Added: trunk/matplotlib/doc/users/plotting/examples/connectionstyle_demo.py
===================================================================
--- trunk/matplotlib/doc/users/plotting/examples/connectionstyle_demo.py (rev 0)
+++ trunk/matplotlib/doc/users/plotting/examples/connectionstyle_demo.py 2009-07-14 21:24:07 UTC (rev 7262)
@@ -0,0 +1,109 @@
+
+import matplotlib.pyplot as plt
+import matplotlib.patches as mpatches
+
+fig = plt.figure(1, figsize=(8,5))
+fig.clf()
+from mpl_toolkits.axes_grid.axes_grid import AxesGrid
+from mpl_toolkits.axes_grid.anchored_artists import AnchoredText
+
+#from matplotlib.font_manager import FontProperties
+
+def add_at(ax, t, loc=2):
+ fp = dict(size=8)
+ _at = AnchoredText(t, loc=loc, prop=fp)
+ ax.add_artist(_at)
+ return _at
+
+
+grid = AxesGrid(fig, 111, (3, 5), label_mode="1", share_all=True)
+
+grid[0].set_autoscale_on(False)
+
+
+x1, y1 = 0.3, 0.3
+x2, y2 = 0.7, 0.7
+
+
+def demo_con_style(ax, connectionstyle, label=None):
+
+ if label is None:
+ label = connectionstyle
+
+ x1, y1 = 0.3, 0.2
+ x2, y2 = 0.8, 0.6
+
+ ax.plot([x1, x2], [y1, y2], ".")
+ ax.annotate("",
+ xy=(x1, y1), xycoords='data',
+ xytext=(x2, y2), textcoords='data',
+ arrowprops=dict(arrowstyle="->", #linestyle="dashed",
+ color="0.5",
+ shrinkA=5, shrinkB=5,
+ patchA=None,
+ patchB=None,
+ connectionstyle=connectionstyle,
+ ),
+ )
+
+ add_at(ax, label, loc=2)
+
+column = grid.axes_column[0]
+
+demo_con_style(column[0], "angle3,angleA=90,angleB=0",
+ label="angle3,\nangleA=90,\nangleB=0")
+demo_con_style(column[1], "angle3,angleA=0,angleB=90",
+ label="angle3,\nangleA=0,\nangleB=90")
+
+
+
+column = grid.axes_column[1]
+
+demo_con_style(column[0], "arc3,rad=0.")
+demo_con_style(column[1], "arc3,rad=0.3")
+demo_con_style(column[2], "arc3,rad=-0.3")
+
+
+
+column = grid.axes_column[2]
+
+demo_con_style(column[0], "angle,angleA=-90,angleB=180,rad=0",
+ label="angle,\nangleA=-90,\nangleB=180,\nrad=0")
+demo_con_style(column[1], "angle,angleA=-90,angleB=180,rad=5",
+ label="angle,\nangleA=-90,\nangleB=180,\nrad=5")
+demo_con_style(column[2], "angle,angleA=-90,angleB=10,rad=5",
+ label="angle,\nangleA=-90,\nangleB=10,\nrad=0")
+
+
+column = grid.axes_column[3]
+
+demo_con_style(column[0], "arc,angleA=-90,angleB=0,armA=30,armB=30,rad=0",
+ label="arc,\nangleA=-90,\nangleB=0,\narmA=30,\narmB=30,\nrad=0")
+demo_con_style(column[1], "arc,angleA=-90,angleB=0,armA=30,armB=30,rad=5",
+ label="arc,\nangleA=-90,\nangleB=0,\narmA=30,\narmB=30,\nrad=5")
+demo_con_style(column[2], "arc,angleA=-90,angleB=0,armA=0,armB=40,rad=0",
+ label="arc,\nangleA=-90,\nangleB=0,\narmA=0,\narmB=40,\nrad=0")
+
+
+column = grid.axes_column[4]
+
+demo_con_style(column[0], "bar,fraction=0.3",
+ label="bar,\nfraction=0.3")
+demo_con_style(column[1], "bar,fraction=-0.3",
+ label="bar,\nfraction=-0.3")
+demo_con_style(column[2], "bar,angle=180,fraction=-0.2",
+ label="bar,\nangle=180,\nfraction=-0.2")
+
+
+#demo_con_style(column[1], "arc3,rad=0.3")
+#demo_con_style(column[2], "arc3,rad=-0.3")
+
+
+grid[0].set_xlim(0, 1)
+grid[0].set_ylim(0, 1)
+grid.axes_llc.axis["bottom"].toggle(ticklabels=False)
+grid.axes_llc.axis["left"].toggle(ticklabels=False)
+fig.subplots_adjust(left=0.05, right=0.95, bottom=0.05, top=0.95)
+
+plt.draw()
+plt.show()
Added: trunk/matplotlib/doc/users/plotting/examples/custom_boxstyle01.py
===================================================================
--- trunk/matplotlib/doc/users/plotting/examples/custom_boxstyle01.py (rev 0)
+++ trunk/matplotlib/doc/users/plotting/examples/custom_boxstyle01.py 2009-07-14 21:24:07 UTC (rev 7262)
@@ -0,0 +1,47 @@
+from matplotlib.path import Path
+
+def custom_box_style(x0, y0, width, height, mutation_size, mutation_aspect=1):
+ """
+ Given the location and size of the box, return the path of
+ the box around it.
+
+ - *x0*, *y0*, *width*, *height* : location and size of the box
+ - *mutation_size* : a reference scale for the mutation.
+ - *aspect_ratio* : aspect-ration for the mutation.
+ """
+
+ # note that we are ignoring mutation_aspect. This is okay in general.
+
+ # padding
+ mypad = 0.3
+ pad = mutation_size * mypad
+
+ # width and height with padding added.
+ width, height = width + 2.*pad, \
+ height + 2.*pad,
+
+ # boundary of the padded box
+ x0, y0 = x0-pad, y0-pad,
+ x1, y1 = x0+width, y0 + height
+
+ cp = [(x0, y0),
+ (x1, y0), (x1, y1), (x0, y1),
+ (x0-pad, (y0+y1)/2.), (x0, y0),
+ (x0, y0)]
+
+ com = [Path.MOVETO,
+ Path.LINETO, Path.LINETO, Path.LINETO,
+ Path.LINETO, Path.LINETO,
+ Path.CLOSEPOLY]
+
+ path = Path(cp, com)
+
+ return path
+
+
+import matplotlib.pyplot as plt
+
+plt.figure(1, figsize=(3,3))
+ax = plt.subplot(111)
+ax.text(0.5, 0.5, "Test", size=30, va="center", ha="center",
+ bbox=dict(boxstyle=custom_box_style, alpha=0.2))
Added: trunk/matplotlib/doc/users/plotting/examples/custom_boxstyle02.py
===================================================================
--- trunk/matplotlib/doc/users/plotting/examples/custom_boxstyle02.py (rev 0)
+++ trunk/matplotlib/doc/users/plotting/examples/custom_boxstyle02.py 2009-07-14 21:24:07 UTC (rev 7262)
@@ -0,0 +1,74 @@
+from matplotlib.path import Path
+from matplotlib.patches import BoxStyle
+import matplotlib.pyplot as plt
+
+# we may derive from matplotlib.patches.BoxStyle._Base class.
+# You need to overide transmute method in this case.
+
+class MyStyle(BoxStyle._Base):
+ """
+ A simple box.
+ """
+
+ def __init__(self, pad=0.3):
+ """
+ The arguments need to be floating numbers and need to have
+ default values.
+
+ *pad*
+ amount of padding
+ """
+
+ self.pad = pad
+ super(MyStyle, self).__init__()
+
+ def transmute(self, x0, y0, width, height, mutation_size):
+ """
+ Given the location and size of the box, return the path of
+ the box around it.
+
+ - *x0*, *y0*, *width*, *height* : location and size of the box
+ - *mutation_size* : a reference scale for the mutation.
+
+ Often, the *mutation_size* is the font size of the text.
+ You don't need to worry about the rotation as it is
+ automatically taken care of.
+ """
+
+ # padding
+ pad = mutation_size * self.pad
+
+ # width and height with padding added.
+ width, height = width + 2.*pad, \
+ height + 2.*pad,
+
+ # boundary of the padded box
+ x0, y0 = x0-pad, y0-pad,
+ x1, y1 = x0+width, y0 + height
+
+ cp = [(x0, y0),
+ (x1, y0), (x1, y1), (x0, y1),
+ (x0-pad, (y0+y1)/2.), (x0, y0),
+ (x0, y0)]
+
+ com = [Path.MOVETO,
+ Path.LINETO, Path.LINETO, Path.LINETO,
+ Path.LINETO, Path.LINETO,
+ Path.CLOSEPOLY]
+
+ path = Path(cp, com)
+
+ return path
+
+
+# register the custom style
+BoxStyle._style_list["angled"] = MyStyle
+
+plt.figure(1, figsize=(3,3))
+ax = plt.subplot(111)
+ax.text(0.5, 0.5, "Test", size=30, va="center", ha="center", rotation=30,
+ bbox=dict(boxstyle="angled,pad=0.5", alpha=0.2))
+
+del BoxStyle._style_list["angled"]
+
+plt.show()
Added: trunk/matplotlib/doc/users/plotting/examples/simple_annotate01.py
===================================================================
--- trunk/matplotlib/doc/users/plotting/examples/simple_annotate01.py (rev 0)
+++ trunk/matplotlib/doc/users/plotting/examples/simple_annotate01.py 2009-07-14 21:24:07 UTC (rev 7262)
@@ -0,0 +1,131 @@
+
+import matplotlib.pyplot as plt
+import matplotlib.patches as mpatches
+
+x1, y1 = 0.3, 0.3
+x2, y2 = 0.7, 0.7
+
+fig = plt.figure(1)
+fig.clf()
+from mpl_toolkits.axes_grid.axes_grid import Grid
+from mpl_toolkits.axes_grid.anchored_artists import AnchoredText
+
+from matplotlib.font_manager import FontProperties
+
+def add_at(ax, t, loc=2):
+ fp = dict(size=10)
+ _at = AnchoredText(t, loc=loc, prop=fp)
+ ax.add_artist(_at)
+ return _at
+
+
+grid = Grid(fig, 111, (4, 4), label_mode="1", share_all=True)
+
+grid[0].set_autoscale_on(False)
+
+ax = grid[0]
+ax.plot([x1, x2], [y1, y2], "o")
+ax.annotate("",
+ xy=(x1, y1), xycoords='data',
+ xytext=(x2, y2), textcoords='data',
+ arrowprops=dict(arrowstyle="->"))
+
+add_at(ax, "A $->$ B", loc=2)
+
+ax = grid[1]
+ax.plot([x1, x2], [y1, y2], "o")
+ax.annotate("",
+ xy=(x1, y1), xycoords='data',
+ xytext=(x2, y2), textcoords='data',
+ arrowprops=dict(arrowstyle="->",
+ connectionstyle="arc3,rad=0.3"))
+
+add_at(ax, "connectionstyle=arc3", loc=2)
+
+
+ax = grid[2]
+ax.plot([x1, x2], [y1, y2], "o")
+ax.annotate("",
+ xy=(x1, y1), xycoords='data',
+ xytext=(x2, y2), textcoords='data',
+ arrowprops=dict(arrowstyle="->",
+ connectionstyle="arc3,rad=0.3",
+ shrinkB=5,
+ )
+ )
+
+add_at(ax, "shrinkB=5", loc=2)
+
+
+ax = grid[3]
+ax.plot([x1, x2], [y1, y2], "o")
+el = mpatches.Ellipse((x1, y1), 0.3, 0.4, angle=30, alpha=0.5)
+ax.add_artist(el)
+ax.annotate("",
+ xy=(x1, y1), xycoords='data',
+ xytext=(x2, y2), textcoords='data',
+ arrowprops=dict(arrowstyle="->",
+ connectionstyle="arc3,rad=0.2",
+ )
+ )
+
+
+ax = grid[4]
+ax.plot([x1, x2], [y1, y2], "o")
+el = mpatches.Ellipse((x1, y1), 0.3, 0.4, angle=30, alpha=0.5)
+ax.add_artist(el)
+ax.annotate("",
+ xy=(x1, y1), xycoords='data',
+ xytext=(x2, y2), textcoords='data',
+ arrowprops=dict(arrowstyle="->",
+ connectionstyle="arc3,rad=0.2",
+ patchB=el,
+ )
+ )
+
+
+add_at(ax, "patchB", loc=2)
+
+
+
+ax = grid[5]
+ax.plot([x1], [y1], "o")
+ax.annotate("Test",
+ xy=(x1, y1), xycoords='data',
+ xytext=(x2, y2), textcoords='data',
+ ha="center", va="center",
+ bbox=dict(boxstyle="round",
+ fc="w",
+ ),
+ arrowprops=dict(arrowstyle="->",
+ #connectionstyle="arc3,rad=0.2",
+ )
+ )
+
+
+add_at(ax, "annotate", loc=2)
+
+
+ax = grid[6]
+ax.plot([x1], [y1], "o")
+ax.annotate("Test",
+ xy=(x1, y1), xycoords='data',
+ xytext=(x2, y2), textcoords='data',
+ ha="center", va="center",
+ bbox=dict(boxstyle="round",
+ fc="w",
+ ),
+ arrowprops=dict(arrowstyle="->",
+ #connectionstyle="arc3,rad=0.2",
+ relpos=(0., 0.)
+ )
+ )
+
+
+add_at(ax, "relpos=(0,0)", loc=2)
+
+
+
+#ax.set_xlim(0, 1)
+#ax.set_ylim(0, 1)
+plt.draw()
Modified: trunk/matplotlib/doc/users/plotting.rst
===================================================================
--- trunk/matplotlib/doc/users/plotting.rst 2009-07-14 21:18:58 UTC (rev 7261)
+++ trunk/matplotlib/doc/users/plotting.rst 2009-07-14 21:24:07 UTC (rev 7262)
@@ -146,5 +146,11 @@
:ref:`plotting-guide-legend`
+Annotating plot
+===============
+:func:`~matplotlib.pyplot.text` and :func:`~matplotlib.pyplot.annotate`
+
+:ref:`plotting-guide-annotation`
+
TODO; see :ref:`how-to-contribute-docs`.
Added: trunk/matplotlib/examples/pylab_examples/axes_zoom_effect.py
===================================================================
--- trunk/matplotlib/examples/pylab_examples/axes_zoom_effect.py (rev 0)
+++ trunk/matplotlib/examples/pylab_examples/axes_zoom_effect.py 2009-07-14 21:24:07 UTC (rev 7262)
@@ -0,0 +1,120 @@
+from matplotlib.transforms import Bbox, TransformedBbox, \
+ blended_transform_factory
+
+from mpl_toolkits.axes_grid.inset_locator import BboxPatch, BboxConnector,\
+ BboxConnectorPatch
+
+
+def connect_bbox(bbox1, bbox2,
+ loc1a, loc2a, loc1b, loc2b,
+ prop_lines, prop_patches=None):
+ if prop_patches is None:
+ prop_patches = prop_lines.copy()
+ prop_patches["alpha"] = prop_patches.get("alpha", 1)*0.2
+
+ c1 = BboxConnector(bbox1, bbox2, loc1=loc1a, loc2=loc2a, **prop_lines)
+ c1.set_clip_on(False)
+ c2 = BboxConnector(bbox1, bbox2, loc1=loc1b, loc2=loc2b, **prop_lines)
+ c2.set_clip_on(False)
+
+ bbox_patch1 = BboxPatch(bbox1, **prop_patches)
+ bbox_patch2 = BboxPatch(bbox2, **prop_patches)
+
+ p = BboxConnectorPatch(bbox1, bbox2,
+ #loc1a=3, loc2a=2, loc1b=4, loc2b=1,
+ loc1a=loc1a, loc2a=loc2a, loc1b=loc1b, loc2b=loc2b,
+ **prop_patches)
+ p.set_clip_on(False)
+
+ return c1, c2, bbox_patch1, bbox_patch2, p
+
+
+def zoom_effect01(ax1, ax2, xmin, xmax, **kwargs):
+ u"""
+ ax1 : the main axes
+ ax1 : the zoomed axes
+ (xmin,xmax) : the limits of the colored area in both plot axes.
+
+ connect ax1 & ax2. The x-range of (xmin, xmax) in both axes will
+ be marked. The keywords parameters will be used ti create
+ patches.
+
+ """
+
+ trans1 = blended_transform_factory(ax1.transData, ax1.transAxes)
+ trans2 = blended_transform_factory(ax2.transData, ax2.transAxes)
+
+ bbox = Bbox.from_extents(xmin, 0, xmax, 1)
+
+ mybbox1 = TransformedBbox(bbox, trans1)
+ mybbox2 = TransformedBbox(bbox, trans2)
+
+ prop_patches=kwargs.copy()
+ prop_patches["ec"]="none"
+ prop_patches["alpha"]="0.2"
+
+ c1, c2, bbox_patch1, bbox_patch2, p = \
+ connect_bbox(mybbox1, mybbox2,
+ loc1a=3, loc2a=2, loc1b=4, loc2b=1,
+ prop_lines=kwargs, prop_patches=prop_patches)
+
+ ax1.add_patch(bbox_patch1)
+ ax2.add_patch(bbox_patch2)
+ ax2.add_patch(c1)
+ ax2.add_patch(c2)
+ ax2.add_patch(p)
+
+ return c1, c2, bbox_patch1, bbox_patch2, p
+
+
+def zoom_effect02(ax1, ax2, **kwargs):
+ u"""
+ ax1 : the main axes
+ ax1 : the zoomed axes
+
+ Similar to zoom_effect01. The xmin & xmax will be taken from the
+ ax1.viewLim.
+ """
+
+ tt = ax1.transScale + (ax1.transLimits + ax2.transAxes)
+ trans = blended_transform_factory(ax2.transData, tt)
+
+ mybbox1 = ax1.bbox
+ mybbox2 = TransformedBbox(ax1.viewLim, trans)
+
+ prop_patches=kwargs.copy()
+ prop_patches["ec"]="none"
+ prop_patches["alpha"]="0.2"
+
+ c1, c2, bbox_patch1, bbox_patch2, p = \
+ connect_bbox(mybbox1, mybbox2,
+ loc1a=3, loc2a=2, loc1b=4, loc2b=1,
+ prop_lines=kwargs, prop_patches=prop_patches)
+
+ ax1.add_patch(bbox_patch1)
+ ax2.add_patch(bbox_patch2)
+ ax2.add_patch(c1)
+ ax2.add_patch(c2)
+ ax2.add_patch(p)
+
+ return c1, c2, bbox_patch1, bbox_patch2, p
+
+
+if __name__ == "__main__":
+ import matplotlib.pyplot as plt
+
+ plt.figure(1, figsize=(5,5))
+ ax1 = plt.subplot(221)
+ ax2 = plt.subplot(212)
+ ax2.set_xlim(0, 1)
+ ax2.set_xlim(0, 5)
+ zoom_effect01(ax1, ax2, 0.2, 0.8)
+
+
+ ax1 = plt.subplot(222)
+ ax1.set_xlim(2, 3)
+ ax2.set_xlim(0, 5)
+ zoom_effect02(ax1, ax2)
+
+ plt.show()
+
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