Hello,
currently the printing.preview function needs an LaTeX installation to
compile
the expression to an image/document. Given that a LaTeX installation is not
always available, and matplotlib has already implemented a sizeable subset
of
the most common LaTeX math commands, would it be possible to provide an
alternative preview function that does not depend on LaTeX itself?
A rough example of how this could work:
def alternative_preview(expr, **kwargs):
"""Show rendered preview of expr"""
from matplotlib import pyplot as plt
latex_str = r"$ %s $" % sp.latex(expr, **kwargs)
# matplotlib does not recognize \operatorname, but does work with
\mathrm
latex_str = latex_str.replace("operatorname","mathrm")
plt.figure(figsize = (15, 2))
plt.text(0.5, 0.5, latex_str, fontsize=30, horizontalalignment='center')
plt.axis('off')
plt.show()
Maybe it would be possible to check whether LaTeX is installed, and fall
back
to this if it is not. I reckon most sympy users also have matplotlib
installed,
so this additional dependency would be acceptable, i.e. users can "choose
their dependency", matplotlib or LaTeX.
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