In one of the cells in my notebook, I already plotted something with
myplot = plt.figure()
plt.plot(x,y)
Now, in a different cell, I'd like to plot the exact same figure again, but add new plots on top of it (similar to what happens with two consecutive calls to plt.plot()). What I tried was adding the following in the new cell:
myplot
plt.plot(xnew,ynew)
However, the only thing I get in the new cell is the new plot, without the former one.
How can one achieve this?
There are essentially two ways to tackle this.
Use the object-oriented approach, i.e. keep handles to the figure and/or axes and reuse them in later cells.
import matplotlib.pyplot as plt
%matplotlib inline
fig, ax=plt.subplots()
ax.plot([1,2,3])
Then in a later cell,
ax.plot([4,5,6])
Suggested reading:
How to keep the current figure when using ipython notebook with %matplotlib inline?
How to add plot commands to a figure in more than one cell, but display it only in the end?
How do I show the same matplotlib figure several times in a single IPython notebook?
The other option is to tell the matplotlib inline backend to keep the figures open at the end of a cell.
import matplotlib.pyplot as plt
%matplotlib inline
%config InlineBackend.close_figures=False # keep figures open in pyplot
plt.plot([1,2,3])
Then in a later cell
plt.plot([4,5,6])
Suggested reading:
