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Commitf70bcb7

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Simplify "artist reference" example.
In particular, add each artist directly to its own axes, instead ofshifting each of them by some offset and grouping all of them togetherin a PatchCollection. Note that this makes the example no longershowcase the use of PatchCollection, but at least based on the docstringthat was not the intent of the example anyways, and PatchCollection isshowcased elsewhere (in the patch_collection.py example, in particular).
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‎examples/shapes_and_collections/artist_reference.py

Lines changed: 34 additions & 86 deletions
Original file line numberDiff line numberDiff line change
@@ -3,66 +3,25 @@
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Reference for Matplotlib artists
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================================
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This example displays several of Matplotlib's graphics primitives (artists)
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drawn using matplotlib API. A full list of artists and the documentation is
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available at :ref:`the artist API <artist-api>`.
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This example displays several of Matplotlib's graphics primitives (artists).
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A full list of artists is documented at :ref:`the artist API <artist-api>`.
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See also :doc:`/gallery/shapes_and_collections/patch_collection`, which groups
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all artists into a single `.PatchCollection` instead.
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Copyright (c) 2010, Bartosz Telenczuk
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BSD License
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"""
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importmatplotlib.pyplotasplt
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importnumpyasnp
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importmatplotlib.pathasmpath
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importmatplotlibasmpl
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importmatplotlib.linesasmlines
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importmatplotlib.patchesasmpatches
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frommatplotlib.collectionsimportPatchCollection
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deflabel(xy,text):
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y=xy[1]-0.15# shift y-value for label so that it's below the artist
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plt.text(xy[0],y,text,ha="center",family='sans-serif',size=14)
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fig,ax=plt.subplots()
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# create 3x3 grid to plot the artists
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grid=np.mgrid[0.2:0.8:3j,0.2:0.8:3j].reshape(2,-1).T
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patches= []
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# add a circle
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circle=mpatches.Circle(grid[0],0.1,ec="none")
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patches.append(circle)
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label(grid[0],"Circle")
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# add a rectangle
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rect=mpatches.Rectangle(grid[1]- [0.025,0.05],0.05,0.1,ec="none")
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patches.append(rect)
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label(grid[1],"Rectangle")
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# add a wedge
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wedge=mpatches.Wedge(grid[2],0.1,30,270,ec="none")
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patches.append(wedge)
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label(grid[2],"Wedge")
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# add a Polygon
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polygon=mpatches.RegularPolygon(grid[3],5,radius=0.1)
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patches.append(polygon)
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label(grid[3],"Polygon")
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# add an ellipse
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ellipse=mpatches.Ellipse(grid[4],0.2,0.1)
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patches.append(ellipse)
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label(grid[4],"Ellipse")
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# add an arrow
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arrow=mpatches.Arrow(grid[5,0]-0.05,grid[5,1]-0.05,0.1,0.1,
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width=0.1)
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patches.append(arrow)
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label(grid[5],"Arrow")
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importmatplotlib.pathasmpath
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importmatplotlib.pyplotasplt
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#add a path patch
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#Prepare the data for the PathPatch below.
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Path=mpath.Path
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path_data=[
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codes,verts=zip(*[
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(Path.MOVETO, [0.018,-0.11]),
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(Path.CURVE4, [-0.031,-0.051]),
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(Path.CURVE4, [-0.115,0.073]),
@@ -71,35 +30,28 @@ def label(xy, text):
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(Path.CURVE4, [0.043,0.121]),
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(Path.CURVE4, [0.075,-0.005]),
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(Path.CURVE4, [0.035,-0.027]),
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(Path.CLOSEPOLY, [0.018,-0.11])]
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codes,verts=zip(*path_data)
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path=mpath.Path(verts+grid[6],codes)
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patch=mpatches.PathPatch(path)
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patches.append(patch)
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label(grid[6],"PathPatch")
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# add a fancy box
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fancybox=mpatches.FancyBboxPatch(
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grid[7]- [0.025,0.05],0.05,0.1,
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boxstyle=mpatches.BoxStyle("Round",pad=0.02))
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patches.append(fancybox)
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label(grid[7],"FancyBboxPatch")
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# add a line
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x,y= ([-0.06,0.0,0.1], [0.05,-0.05,0.05])
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line=mlines.Line2D(x+grid[8,0],y+grid[8,1],lw=5.,alpha=0.3)
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label(grid[8],"Line2D")
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colors=np.linspace(0,1,len(patches))
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collection=PatchCollection(patches,cmap=plt.cm.hsv,alpha=0.3)
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collection.set_array(colors)
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ax.add_collection(collection)
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ax.add_line(line)
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plt.axis('equal')
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plt.axis('off')
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plt.tight_layout()
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(Path.CLOSEPOLY, [0.018,-0.11])])
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artists= [
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mpatches.Circle((0,0),0.1,ec="none"),
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mpatches.Rectangle((-0.025,-0.05),0.05,0.1,ec="none"),
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mpatches.Wedge((0,0),0.1,30,270,ec="none"),
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mpatches.RegularPolygon((0,0),5,radius=0.1),
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mpatches.Ellipse((0,0),0.2,0.1),
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mpatches.Arrow(-0.05,-0.05,0.1,0.1,width=0.1),
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mpatches.PathPatch(mpath.Path(verts,codes),ec="none"),
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mpatches.FancyBboxPatch((-0.025,-0.05),0.05,0.1,ec="none",
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boxstyle=mpatches.BoxStyle("Round",pad=0.02)),
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mlines.Line2D([-0.06,0.0,0.1], [0.05,-0.05,0.05],lw=5),
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]
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axs=plt.figure(figsize=(6,6),layout="constrained").subplots(3,3)
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fori, (ax,artist)inenumerate(zip(axs.flat,artists)):
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artist.set(color=mpl.colormaps["hsv"](i/len(artists)))
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ax.add_artist(artist)
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ax.set(title=type(artist).__name__,
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aspect=1,xlim=(-.2,.2),ylim=(-.2,.2))
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ax.set_axis_off()
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plt.show()
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#############################################################################
@@ -122,8 +74,4 @@ def label(xy, text):
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# - `matplotlib.patches.PathPatch`
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# - `matplotlib.patches.FancyBboxPatch`
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# - `matplotlib.patches.RegularPolygon`
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# - `matplotlib.collections`
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# - `matplotlib.collections.PatchCollection`
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# - `matplotlib.cm.ScalarMappable.set_array`
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# - `matplotlib.axes.Axes.add_collection`
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# - `matplotlib.axes.Axes.add_line`
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# - `matplotlib.axes.Axes.add_artist`

‎examples/shapes_and_collections/patch_collection.py

Lines changed: 3 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -4,6 +4,9 @@
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============================
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This example demonstrates how to use `.collections.PatchCollection`.
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See also :doc:`/gallery/shapes_and_collections/artist_reference`, which instead
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adds each artist separately to its own axes.
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"""
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importnumpyasnp

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