$schemamarkup = get_post_meta(get_the_ID(), 'schemamarkup', true); if(!empty($schemamarkup)) { echo $schemamarkup; }

How to Install Matplotlib on Gnu/Linux Distros

GNU/Linux Installing Matplotlib Guide

Hi! The Tutorial shows you Step-by-Step How to Install Matplotlib in GNU/Linux Desktops.

And Matplotlib for Linux is a Plotting Library for the Python and its Numerical Mathematics extension NumPy.

Moreover, it provides an Object-Oriented API for embedding Plots into Apps using general-purpose GUI Toolkits like Tkinter, wxPython, Qt, or GTK+.

Step-by-step Install Matplotlib in Linux - Featured

GNU/Linux Matplotlib Installation Guide