Missing top axis boundary and tick mark

[nt229]

Hi, I have the following code (from #192 ) for plotting a truncated ternary, which works well, except there is no boundary line on the top of the plot, and the tick mark at 50 on the left hand axis is missing, and the one on the right hand axis is thinner than the others?

I can force a fix for the issue regarding the missing boundary (plotting two points and drawing a line between them), which incidentally can also be used to fix the thin tick mark (by simply extending the line). (see the commented out part with line, line1 etc).

There must be a better way to fix these small-ish issues, that I'm just completely missing? It could be somewhere in #198 and I'm just missing it. Thanks

figure, tax = ternary.figure (scale = 100)

tax.boundary(linewidth=1)
tax.gridlines(c="black", multiple = 10, alpha = 0.3)

ycut_cartesian = np.sqrt(3)/2 * 50
limits = {'b':(0,110,10), 'r':(0,60,10), 'l':(50,110,10)} # limits = {which_axis:(minimum_limit, maximum_limit, step_size)}


#line = (53, 50, 0)
#line1 = (0, 50, 50)
#tax.line(line, line1, linewidth = 2, color = 'black', linestyle = "-", zorder = 0)

tax.scatter(mil03346, marker = 'o', s = 7, c = "yellowgreen", zorder = 2, label = "MIL 03346",linewidth = 0.1, edgecolors = "white")
tax.scatter(mil090030, marker = 'o', s = 7, c = "greenyellow", zorder = 2,linewidth = 0.1, edgecolors = "white")
tax.scatter(mil090032, marker = 'o', s = 7, c = "green", zorder = 2,linewidth = 0.1, edgecolors = "white")
tax.scatter(mil090136, marker = 'o', s = 7, c = "limegreen", zorder = 2,linewidth = 0.1, edgecolors = "white")
tax.scatter(nwa5790, marker = '^', s = 7, c = "black", zorder = 2,linewidth = 0.1, edgecolors = "white")
tax.scatter(nwa817, marker = 's', s = 7, c = "black", zorder = 2, linewidth = 0.1, edgecolors = "white")
tax.scatter(yamato, marker = 'D', s = 7, c = "black", zorder = 2, linewidth = 0.1, edgecolors = "white")
tax.scatter(nakhla, marker = 'X', s = 7, c = "black", zorder = 2, linewidth = 0.1, edgecolors = "white")
tax.scatter(gov_val, marker = 'v', s = 7, c = "black", zorder = 2, linewidth = 0.1, edgecolors = "white")
tax.scatter(laf, marker = '^', s = 7, c = "bisque", zorder = 2, linewidth = 0.1, edgecolors = "black")
tax.scatter(nwa998, marker = 's', s = 7, color = "bisque", zorder = 2, linewidth = 0.1, edgecolors = "black")

tax.legend(loc = "upper right", fontsize = 4, handletextpad = 0.05, markerscale = 1, fancybox = False, frameon=False)
tax.get_axes().axis('off')
tax.set_background_color(color = "white", alpha = 0.0)

tax.top_corner_label("Olivine", fontsize = 5, offset = 0.2)
tax.right_corner_label("Pyroxene", fontsize = 5, offset=0.01, )
tax.left_corner_label("Mesostasis", fontsize = 5, offset=0.01)

tax.get_axes().set_ylim(ymax = ycut_cartesian)
ManualTicks(tax, limits)
tax.get_axes().set_aspect(1) #sets as equilateral triangle, needs to be the last step of plotting
tax._redraw_labels() #see above

ternary.plt.show()
plt.savefig(fpath+'Truncated Nakhlite Modal Abundances.png', format = 'png', dpi = 400, bbox_inches = 'tight')