pseudocubic questions

pseudocubic answers

• numpy.gradient() seems to produce erroneous boundary values (using first differences)
• Removing numpy meshgrid points outside of a Shapely polygon
• Matplotlib plt.show() isn't showing graph
• Matplotlib subplots figure - savefig() won't output PDF. "NoneType" error
• LaTeX document and BoundingBox of an eps file created by matplotlib