.. _pylab_examples-spine_placement_demo: pylab_examples example code: spine_placement_demo.py ==================================================== .. plot:: /home/tcaswell/src/p/matplotlib/doc/mpl_examples/pylab_examples/spine_placement_demo.py :: import numpy as np import matplotlib.pyplot as plt fig = plt.figure() x = np.linspace(-np.pi, np.pi, 100) y = 2*np.sin(x) ax = fig.add_subplot(2, 2, 1) ax.set_title('centered spines') ax.plot(x, y) ax.spines['left'].set_position('center') ax.spines['right'].set_color('none') ax.spines['bottom'].set_position('center') ax.spines['top'].set_color('none') ax.spines['left'].set_smart_bounds(True) ax.spines['bottom'].set_smart_bounds(True) ax.xaxis.set_ticks_position('bottom') ax.yaxis.set_ticks_position('left') ax = fig.add_subplot(2, 2, 2) ax.set_title('zeroed spines') ax.plot(x, y) ax.spines['left'].set_position('zero') ax.spines['right'].set_color('none') ax.spines['bottom'].set_position('zero') ax.spines['top'].set_color('none') ax.spines['left'].set_smart_bounds(True) ax.spines['bottom'].set_smart_bounds(True) ax.xaxis.set_ticks_position('bottom') ax.yaxis.set_ticks_position('left') ax = fig.add_subplot(2, 2, 3) ax.set_title('spines at axes (0.6, 0.1)') ax.plot(x, y) ax.spines['left'].set_position(('axes', 0.6)) ax.spines['right'].set_color('none') ax.spines['bottom'].set_position(('axes', 0.1)) ax.spines['top'].set_color('none') ax.spines['left'].set_smart_bounds(True) ax.spines['bottom'].set_smart_bounds(True) ax.xaxis.set_ticks_position('bottom') ax.yaxis.set_ticks_position('left') ax = fig.add_subplot(2, 2, 4) ax.set_title('spines at data (1, 2)') ax.plot(x, y) ax.spines['left'].set_position(('data', 1)) ax.spines['right'].set_color('none') ax.spines['bottom'].set_position(('data', 2)) ax.spines['top'].set_color('none') ax.spines['left'].set_smart_bounds(True) ax.spines['bottom'].set_smart_bounds(True) ax.xaxis.set_ticks_position('bottom') ax.yaxis.set_ticks_position('left') # ---------------------------------------------------- def adjust_spines(ax, spines): for loc, spine in ax.spines.items(): if loc in spines: spine.set_position(('outward', 10)) # outward by 10 points spine.set_smart_bounds(True) else: spine.set_color('none') # don't draw spine # turn off ticks where there is no spine if 'left' in spines: ax.yaxis.set_ticks_position('left') else: # no yaxis ticks ax.yaxis.set_ticks([]) if 'bottom' in spines: ax.xaxis.set_ticks_position('bottom') else: # no xaxis ticks ax.xaxis.set_ticks([]) fig = plt.figure() x = np.linspace(0, 2*np.pi, 100) y = 2*np.sin(x) ax = fig.add_subplot(2, 2, 1) ax.plot(x, y, clip_on=False) adjust_spines(ax, ['left']) ax = fig.add_subplot(2, 2, 2) ax.plot(x, y, clip_on=False) adjust_spines(ax, []) ax = fig.add_subplot(2, 2, 3) ax.plot(x, y, clip_on=False) adjust_spines(ax, ['left', 'bottom']) ax = fig.add_subplot(2, 2, 4) ax.plot(x, y, clip_on=False) adjust_spines(ax, ['bottom']) plt.show() Keywords: python, matplotlib, pylab, example, codex (see :ref:`how-to-search-examples`)