python100天95画丰富的形状图。FancyBboxPatch

　　Matplotlib绘制精美的盒子
　　import matplotlib.pyplot as plt import matplotlib.transforms as mtransforms import matplotlib.patches as mpatch from matplotlib.patches import FancyBboxPatchstyles = mpatch.BoxStyle.get_styles() spacing = 1.2  figheight = (spacing * len(styles) + .5) fig1 = plt.figure(1, (4 / 1.5, figheight / 1.5)) fontsize = 0.3 * 72  for i, stylename in enumerate(sorted(styles)):     fig1.text(0.5, (spacing * (len(styles) - i) - 0.5) / figheight, stylename,               ha=＂center＂,               size=fontsize,               transform=fig1.transFigure,               bbox=dict(boxstyle=stylename, fc=＂w＂, ec=＂k＂))  plt.show()
　　可以看到这样一些常用 的盒子开头
　　显示更多 的盒子# Bbox object around which the fancy box will be drawn. bb = mtransforms.Bbox([[0.3, 0.4], [0.7, 0.6]])   def draw_bbox(ax, bb):     # boxstyle=square with pad=0, i.e. bbox itself.     p_bbox = FancyBboxPatch((bb.xmin, bb.ymin),                             abs(bb.width), abs(bb.height),                             boxstyle=＂square,pad=0.＂,                             ec=＂k＂, fc=＂none＂, zorder=10.,                             )     ax.add_patch(p_bbox)   def test1(ax):      # a fancy box with round corners. pad=0.1     p_fancy = FancyBboxPatch((bb.xmin, bb.ymin),                              abs(bb.width), abs(bb.height),                              boxstyle=＂round,pad=0.1＂,                              fc=(1., .8, 1.),                              ec=(1., 0.5, 1.))      ax.add_patch(p_fancy)      ax.text(0.1, 0.8,             r＂ boxstyle=＂round,pad=0.1＂＂,             size=10, transform=ax.transAxes)      # draws control points for the fancy box.     # l = p_fancy.get_path().vertices     # ax.plot(l[:,0], l[:,1], ＂.＂)      # draw the original bbox in black     draw_bbox(ax, bb)   def test2(ax):      # bbox=round has two optional argument. pad and rounding_size.     # They can be set during the initialization.     p_fancy = FancyBboxPatch((bb.xmin, bb.ymin),                              abs(bb.width), abs(bb.height),                              boxstyle=＂round,pad=0.1＂,                              fc=(1., .8, 1.),                              ec=(1., 0.5, 1.))      ax.add_patch(p_fancy)      # boxstyle and its argument can be later modified with     # set_boxstyle method. Note that the old attributes are simply     # forgotten even if the boxstyle name is same.      p_fancy.set_boxstyle(＂round,pad=0.1, rounding_size=0.2＂)     # or     # p_fancy.set_boxstyle(＂round＂, pad=0.1, rounding_size=0.2)      ax.text(0.1, 0.8,             ＂ boxstyle=＂round,pad=0.1  rounding_size=0.2＂＂,             size=10, transform=ax.transAxes)      # draws control points for the fancy box.     # l = p_fancy.get_path().vertices     # ax.plot(l[:,0], l[:,1], ＂.＂)      draw_bbox(ax, bb)   def test3(ax):        p_fancy = FancyBboxPatch((bb.xmin, bb.ymin),                              abs(bb.width), abs(bb.height),                              boxstyle=＂round,pad=0.1＂,                              mutation_scale=2.,                              fc=(1., .8, 1.),                              ec=(1., 0.5, 1.))      ax.add_patch(p_fancy)      ax.text(0.1, 0.8,             ＂ boxstyle=＂round,pad=0.1＂  mutation_scale=2＂,             size=10, transform=ax.transAxes)      # draws control points for the fancy box.     # l = p_fancy.get_path().vertices     # ax.plot(l[:,0], l[:,1], ＂.＂)      draw_bbox(ax, bb)   def test4(ax):      # When the aspect ratio of the axes is not 1, the fancy box may     # not be what you expected (green)      p_fancy = FancyBboxPatch((bb.xmin, bb.ymin),                              abs(bb.width), abs(bb.height),                              boxstyle=＂round,pad=0.2＂,                              fc=＂none＂,                              ec=(0., .5, 0.), zorder=4)      ax.add_patch(p_fancy)      # You can compensate this by setting the mutation_aspect (pink).     p_fancy = FancyBboxPatch((bb.xmin, bb.ymin),                              abs(bb.width), abs(bb.height),                              boxstyle=＂round,pad=0.3＂,                              mutation_aspect=.5,                              fc=(1., 0.8, 1.),                              ec=(1., 0.5, 1.))      ax.add_patch(p_fancy)      ax.text(0.1, 0.8,             ＂ boxstyle=＂round,pad=0.3＂  mutation_aspect=.5＂,             size=10, transform=ax.transAxes)      draw_bbox(ax, bb)   def test_all():     plt.clf()      ax = plt.subplot(2, 2, 1)     test1(ax)     ax.set_xlim(0., 1.)     ax.set_ylim(0., 1.)     ax.set_title(＂test1＂)     ax.set_aspect(1.)      ax = plt.subplot(2, 2, 2)     ax.set_title(＂test2＂)     test2(ax)     ax.set_xlim(0., 1.)     ax.set_ylim(0., 1.)     ax.set_aspect(1.)      ax = plt.subplot(2, 2, 3)     ax.set_title(＂test3＂)     test3(ax)     ax.set_xlim(0., 1.)     ax.set_ylim(0., 1.)     ax.set_aspect(1)      ax = plt.subplot(2, 2, 4)     ax.set_title(＂test4＂)     test4(ax)     ax.set_xlim(-0.5, 1.5)     ax.set_ylim(0., 1.)     ax.set_aspect(2.)      plt.show()   test_all()