Pagebreak inside Subplot? Matplotlib subplot over mulitple pages

Question

I want to create a python programm that is able to plot multiple graphs into one PDF file, however the number of subplots is variable. I did this already with one plot per page.

Answer 1

You can use matplotlib's PdfPages as follows.

from matplotlib.backends.backend_pdf import PdfPages
import matplotlib.pyplot as plt 
import numpy as np

pp = PdfPages('multipage.pdf')

x=np.arange(1,10)
y=np.arange(1,10)

fig=plt.figure()
ax1=fig.add_subplot(211)
# ax1.set_title("cell" + keyInTags)
# ax1.plot(x, y, color='k')
# ax.plot(x, y_red, color='k')
ax2=fig.add_subplot(212)

pp.savefig(fig)

fig2=plt.figure()
ax1=fig2.add_subplot(321)
ax1.plot(x, y, color='k')
ax2=fig2.add_subplot(322)
ax2.plot(x, y, color='k')
ax3=fig2.add_subplot(313)

pp.savefig(fig2)

pp.close()

Play with these subplot numbers a little bit, so you would understand how to handle which graph goes where.