.. _axes_grid-parasite_simple2: axes_grid example code: parasite_simple2.py =========================================== .. plot:: /home/tcaswell/other_source/matplotlib/doc/mpl_examples/axes_grid/parasite_simple2.py :: import matplotlib.transforms as mtransforms import matplotlib.pyplot as plt from mpl_toolkits.axes_grid1.parasite_axes import SubplotHost obs = [["01_S1", 3.88, 0.14, 1970, 63], ["01_S4", 5.6, 0.82, 1622, 150], ["02_S1", 2.4, 0.54, 1570, 40], ["03_S1", 4.1, 0.62, 2380, 170]] fig = plt.figure() ax_kms = SubplotHost(fig, 1,1,1, aspect=1.) # angular proper motion("/yr) to linear velocity(km/s) at distance=2.3kpc pm_to_kms = 1./206265.*2300*3.085e18/3.15e7/1.e5 aux_trans = mtransforms.Affine2D().scale(pm_to_kms, 1.) ax_pm = ax_kms.twin(aux_trans) ax_pm.set_viewlim_mode("transform") fig.add_subplot(ax_kms) for n, ds, dse, w, we in obs: time = ((2007+(10. + 4/30.)/12)-1988.5) v = ds / time * pm_to_kms ve = dse / time * pm_to_kms ax_kms.errorbar([v], [w], xerr=[ve], yerr=[we], color="k") ax_kms.axis["bottom"].set_label("Linear velocity at 2.3 kpc [km/s]") ax_kms.axis["left"].set_label("FWHM [km/s]") ax_pm.axis["top"].set_label("Proper Motion [$^{''}$/yr]") ax_pm.axis["top"].label.set_visible(True) ax_pm.axis["right"].major_ticklabels.set_visible(False) ax_kms.set_xlim(950, 3700) ax_kms.set_ylim(950, 3100) # xlim and ylim of ax_pms will be automatically adjusted. plt.draw() plt.show() Keywords: python, matplotlib, pylab, example, codex (see :ref:`how-to-search-examples`)