Python 3.9 on Mac running OS 11.6.1. My application involves placing a plot on a frame inside my root window, and I’m struggling to get the plot to take up a larger portion of the window. I thought rcParams in matplotlib.pyplot would take care of this, but I must be overlooking something.
Here’s what I have so far:
import numpy as np
from tkinter import Tk,Frame,TOP,BOTH
import matplotlib
from matplotlib import pyplot as plt
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
plt.rcParams["figure.figsize"] = [18,10]
root=Tk()
root.wm_title("Root Window")
root.geometry('1500x1000')
x = np.linspace(0, 2 * np.pi, 400)
y = np.sin(x ** 2)
fig, ax = plt.subplots()
ax.plot(x, y)
canvas_frame=Frame(root) # also tried adjusting size of frame but that didn't help
canvas_frame.pack(side=TOP,expand=True)
canvas = FigureCanvasTkAgg(fig, master=canvas_frame)
canvas.draw()
canvas.get_tk_widget().pack(side=TOP,fill=BOTH,expand=True)
root.mainloop()
For my actual application, I need for canvas to have a frame as its parent and not simply root, which is why canvas_frame is introduced above.
11
2 Answers
try something like this:
fig.subplots_adjust(left=0.05, bottom=0.07, right=0.95, top=0.95, wspace=0, hspace=0)
this is output, figure now takes more screen area %
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I addition to the suggestion of changing the margins, you could also add fill=BOTH to the canvas widget.
canvas_frame.pack(side=TOP,expand=True,fill=BOTH)
This makes the figure canvas take up more space, but the plot doesn’t take the whole window. However, if I resize the window, then the plot takes the whole window.
“I need for canvas to have a frame as its parent and not simply root” It’s not clear what is stopping you from doing that. Is the problem as simple as adding
fill="both"when callingcanvas_frame.pack?This problem doesn’t have to do with adding the canvas to the window in the correct way so much as removing the extra space from inside the canvas. If you add a line after creating the canvas that fills it with red, and then rapidly drag the window’s sides around to resize it, the plot will flicker, and you can see the red behind. The red fills the whole window, so the canvas is filling as much of the window as it can. Changing the way you add the canvas to the window is not going to do much. Just eliminating the possibilities.
To fill the canvas with a certain color, you can use
bg="red". To test this yourself, just addcanvas.get_tk_widget().config(bg="red")right before you callroot.mainloop(). Then, unmaximize the window and drag one of the sides quickly back and forth. If your computer is slow enough (like mine), you should be able to see flickers of red filling the window.Yes, I have–see response above from 1/5 20:23. This merely moves the plot to the top left of my window.
Would you mind including a screenshot of how this looks for you, and what improvement you would like to see?