I want tkinter to display the graph I created with matplotlib, and I want to be able to change the range of the x-axis and y-axis with buttons.

I was able to draw the graph using the code below, but I couldn't find a way to change the range of the x and y axes after that, so please let me know.

import numpy as np
import matplotlib.pyplot asplt
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
import tkinter as tk
from tkinter import filedialog

root=tk.Tk()

config=plt.figure()
ax=fig.add_subplot()

def file_select():
    idir=r'C:\Users'
    file_path1=tk.filedialog.askopenfilename (initialdir=idir)
    input_box.insert(tk.END, file_path1)

    data=np.loadtxt(file_path1, comments="*")
    ax.plot(data[:,0], np.log10(data[:,1]*data[:,2]), label="Si", linewidth=0.4)
    canvas=FigureCanvasTkAgg(fig,master=root)
    canvas.draw()
    canvas.get_tk_widget().pack()

plt.title("sample")# Graph Title
plt.xlabel(r"x")# Name of the x-axis
plt.ylabel("y")# y-axis name
plt.xlim(20,70)# x-axis range
plt.ylim(0,25)# y-axis range
plt.legend(bbox_to_anchor=(0,0.85), loc='upper left', borderaxespad=1,fontsize=12)

input_box=tk.Entry(width=40)
input_box.place(x=10,y=100)
input_box.pack()

# Button 1
btn1 = tk.Button(root, text="reference", command=file_select)
btn1.pack()
# Button 2
btn2=tk.Button(root, text="End", command=lambda:root.quit())
btn2.pack()

root.withdraw()
root.update()
root.deiconify()
root.mainloop()

Thank you metroplis and Kunif.I'll think about it myself from here.

python matplotlib tkinter

2022-09-30 13:46

1 Answers

I tried using matplotlib.widgets.RangeSlide instead of buttons.

import numpy as np
import matplotlib.pyplot asplt
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
from matplotlib.widgets import RangeSlider
import tkinter as tk
from tkinter import filedialog
from functools import partial

defplot_data(ax):
    # select data file
    idir=r'C:\Users'
    file_path1=tk.filedialog.askopenfilename (initialdir=idir)
    input_box.insert(tk.END, file_path1)

    # import data and lot
    data=np.loadtxt(file_path1, comments='*')
    ax.plot(
      data[:,0], np.log10 (data[:,1]*data[:,2]),
      label='Si', linewidth=0.4)
    canvas=FigureCanvasTkAgg(fig,master=root)
    canvas.draw()

    # add range slider to x-axis
    slx = plt.axes ([0.2, 0.07, 0.7, 0.03])
    x_slider=RangeSlider(
        ax=slx, label=', valmin=20, valmax=70,
        validate=(20,70), valstep=1)
    
    # add range slider to y-axis
    sly = plt.axes ([0.08, 0.2, 0.025, 0.68])
    y_slider = RangeSlider(
        ax=sly, label=', valmin=0, valmax=25,
        validate=(0,25), valstep=1, orientation='vertical')

    # callback function when moving slider
    default(val):
        ax.set_xlim (*(x_slider.val))
        ax.set_ylim(*(y_slider.val))
        canvas.draw()

    x_slider.on_changed (update)
    y_slider.on_changed (update)

    canvas.get_tk_widget().pack()

if__name__=='__main__':
    root=tk.Tk()
    config,ax=plt.subplots()
    plt.subplots_adjust (left=0.2, bottom=0.2)

    plt.title('sample')# Graph Title
    plt.xlabel('x')# Name of the x-axis
    Name of the plt.ylabel('y')#y axis
    plt.xlim(20,70)# x-axis range
    plt.ylim(0,25)# y-axis range
    plt.legend(
      bbox_to_anchor=(0,0.85), loc='upper left',
      borderaxespad=1, fontsize=12)

    input_box=tk.Entry(width=40)
    input_box.place(x=10,y=100)
    input_box.pack()

    # Button 1
    btn1 = tk.Button(
      root, text='reference', command=partial(plot_data,ax))
    btn1.pack()

    # Button 2
    btn2 = tk.Button(
      root, text='End', command=lambda:root.quit())
    btn2.pack()

    root.withdraw()
    root.update()
    root.deiconify()
    root.mainloop()

2022-09-30 13:46

If you have any answers or tips

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