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I have the following code: from mpl_toolkits.axes_grid.axislines import SubplotZero from matplotlib.transforms import BlendedGenericTransform import matplotlib.pyplot as plt import numpy if 1: fig = plt.figure(1) ax = SubplotZero(fig, 111) fig.add_subplot(ax) ax.axhline(linewidth=1.7, color="black") ax.axvline(linewidth=1.7, color="black") plt.xticks([1]) plt.yticks([]) ax.text(0, 1.05, 'y', transform=BlendedGenericTransform(ax.transData, ax.transAxes), ha='center') ax.text(1.05, 0, 'x', transform=BlendedGenericTransform(ax.transAxes, ax.transData), va='center') for direction in ["xzero", "yzero"]: ax.axis[direction].set_axisline_style("-|>") ax.axis[direction].set_visible(True) for direction in ["left", "right", "bottom", "top"]: ax.axis[direction].set_visible(False) x = numpy.linspace(-0.5, 1., 1000) ax.plot(x, numpy.sin(x*numpy.pi), linewidth=1.2, color="black") plt.show() which produces the following image: The axis arrowheads look vestigial in comparison to the actual graph. How do I size them up a little so that they look normal with respect to the width of the axes. Also - it is difficult to see here, but the interior of the arrows is blue - how do I change that to black?

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