I have one, two, or three plots in a canvas of Tkinter. Let's assume I don't have any Mouse. There only is a keyboard. I want a cursor on these plots that moves at the same horizontal axis on all graphs in the canvas and of course when the Tk window shows up the yellow cursors (mplcursors) on all graphs be at the first point of graphs without any mouse movement and clicks(if you run the following code there are two cursors yellow and green). The yellow cursors move together by right/left arrow keys on the keyboard.
from matplotlib.widgets import MultiCursor
import matplotlib.pyplot as plt
import numpy as np
from tkinter import *
from matplotlib.figure import Figure
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg, NavigationToolbar2Tk
import mplcursors
root = Tk()
fig = Figure(figsize=(8,6))
fig, (ax1, ax2) = plt.subplots(nrows=2, sharex=True)
x = np.linspace(-np.pi, np.pi, 256, endpoint=True)
y = np.sin(x)
z = np.cos(x)
ax1.plot(x, y, label="sin function")
ax1.legend(loc="upper right")
ax2.plot(x, z, label="cos function")
canvas = FigureCanvasTkAgg(fig,root)
c1 = mplcursors.cursor(ax1, multiple=True,hover=False,highlight=False,bindings={"toggle_visible": "h", "toggle_enabled": "e","left": "left","right": "right"})
c2 = mplcursors.cursor(ax2, multiple=True,hover=False,highlight=False,bindings={"toggle_visible": "h", "toggle_enabled": "e","left": "left","right": "right"})
multi = MultiCursor(fig.canvas, (ax1, ax2), color='g', lw=0.5, horizOn=True, vertOn=True)
ax2.legend(loc="upper left")
canvas.draw()
#pack canavs
canvas.get_tk_widget().pack(side = BOTTOM, fill=BOTH, expand=True)
#create Navigation Toolbar
toolbar = NavigationToolbar2Tk(canvas, root) #add to canvas
canvas._tkcanvas.pack(side = TOP, fill=BOTH, expand=True)
root.mainloop()
Do you have any suggestions? Can I also make the Multi-Cursor (green lines) to move with mplcursors on plots and stick to them too?
I have tried multi-threading from this link, used mouse controlling from this link and getting pixels of first plot points by this question but I couldn't handle the first display event and it needed the mouse to be clicked first on both plots separately to show the cursors.
My plots are more complicated, they are signals and I have multiple pages in my application.
