How to display an image from a numpy array in tkinter?












1















The following short code is meant to create an array with numpy, convert it into an image object with PIL and then insert into a canvas on a tkinter window.



from tkinter import *
from PIL import Image

root = Tk()
array = np.ones((40,40))*150
img = Image.fromarray(array)
canvas = Canvas(root,width=300,height=300)
canvas.pack()
canvas.create_image(20,20,anchor=NW,image=img)

root.mainloop()


This throws the error:



TclError: image "<PIL.Image.Image image mode=F size=40x40 at 0x7F42D3BC3290>" doesn't exist









share|improve this question




















  • 1





    Well you are importing * but using tk.. Should probably fix that first.

    – Mike - SMT
    Nov 14 '18 at 21:15


















1















The following short code is meant to create an array with numpy, convert it into an image object with PIL and then insert into a canvas on a tkinter window.



from tkinter import *
from PIL import Image

root = Tk()
array = np.ones((40,40))*150
img = Image.fromarray(array)
canvas = Canvas(root,width=300,height=300)
canvas.pack()
canvas.create_image(20,20,anchor=NW,image=img)

root.mainloop()


This throws the error:



TclError: image "<PIL.Image.Image image mode=F size=40x40 at 0x7F42D3BC3290>" doesn't exist









share|improve this question




















  • 1





    Well you are importing * but using tk.. Should probably fix that first.

    – Mike - SMT
    Nov 14 '18 at 21:15
















1












1








1








The following short code is meant to create an array with numpy, convert it into an image object with PIL and then insert into a canvas on a tkinter window.



from tkinter import *
from PIL import Image

root = Tk()
array = np.ones((40,40))*150
img = Image.fromarray(array)
canvas = Canvas(root,width=300,height=300)
canvas.pack()
canvas.create_image(20,20,anchor=NW,image=img)

root.mainloop()


This throws the error:



TclError: image "<PIL.Image.Image image mode=F size=40x40 at 0x7F42D3BC3290>" doesn't exist









share|improve this question
















The following short code is meant to create an array with numpy, convert it into an image object with PIL and then insert into a canvas on a tkinter window.



from tkinter import *
from PIL import Image

root = Tk()
array = np.ones((40,40))*150
img = Image.fromarray(array)
canvas = Canvas(root,width=300,height=300)
canvas.pack()
canvas.create_image(20,20,anchor=NW,image=img)

root.mainloop()


This throws the error:



TclError: image "<PIL.Image.Image image mode=F size=40x40 at 0x7F42D3BC3290>" doesn't exist






python tkinter






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Nov 14 '18 at 21:16







hirschme

















asked Nov 14 '18 at 21:05









hirschmehirschme

13119




13119








  • 1





    Well you are importing * but using tk.. Should probably fix that first.

    – Mike - SMT
    Nov 14 '18 at 21:15
















  • 1





    Well you are importing * but using tk.. Should probably fix that first.

    – Mike - SMT
    Nov 14 '18 at 21:15










1




1





Well you are importing * but using tk.. Should probably fix that first.

– Mike - SMT
Nov 14 '18 at 21:15







Well you are importing * but using tk.. Should probably fix that first.

– Mike - SMT
Nov 14 '18 at 21:15














1 Answer
1






active

oldest

votes


















1














You need to use PhotoImage from ImageTk.



Do this instead:



import tkinter as tk
import numpy as np
from PIL import Image, ImageTk

root = tk.Tk()

array = np.ones((40,40))*150
img = ImageTk.PhotoImage(image=Image.fromarray(array))

canvas = tk.Canvas(root,width=300,height=300)
canvas.pack()
canvas.create_image(20,20, anchor="nw", image=img)

root.mainloop()





share|improve this answer
























  • I get "TclError: image "pyimage1" doesn't exist". Does that code work for you?

    – hirschme
    Nov 15 '18 at 0:06











  • OK, the code works after adding the master=root attribute to PhotoImage.

    – hirschme
    Nov 15 '18 at 0:24











  • That should not matter here. I have never used master with PhotoImage and this code works fine on my end.

    – Mike - SMT
    Nov 15 '18 at 0:26











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1 Answer
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active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes









1














You need to use PhotoImage from ImageTk.



Do this instead:



import tkinter as tk
import numpy as np
from PIL import Image, ImageTk

root = tk.Tk()

array = np.ones((40,40))*150
img = ImageTk.PhotoImage(image=Image.fromarray(array))

canvas = tk.Canvas(root,width=300,height=300)
canvas.pack()
canvas.create_image(20,20, anchor="nw", image=img)

root.mainloop()





share|improve this answer
























  • I get "TclError: image "pyimage1" doesn't exist". Does that code work for you?

    – hirschme
    Nov 15 '18 at 0:06











  • OK, the code works after adding the master=root attribute to PhotoImage.

    – hirschme
    Nov 15 '18 at 0:24











  • That should not matter here. I have never used master with PhotoImage and this code works fine on my end.

    – Mike - SMT
    Nov 15 '18 at 0:26
















1














You need to use PhotoImage from ImageTk.



Do this instead:



import tkinter as tk
import numpy as np
from PIL import Image, ImageTk

root = tk.Tk()

array = np.ones((40,40))*150
img = ImageTk.PhotoImage(image=Image.fromarray(array))

canvas = tk.Canvas(root,width=300,height=300)
canvas.pack()
canvas.create_image(20,20, anchor="nw", image=img)

root.mainloop()





share|improve this answer
























  • I get "TclError: image "pyimage1" doesn't exist". Does that code work for you?

    – hirschme
    Nov 15 '18 at 0:06











  • OK, the code works after adding the master=root attribute to PhotoImage.

    – hirschme
    Nov 15 '18 at 0:24











  • That should not matter here. I have never used master with PhotoImage and this code works fine on my end.

    – Mike - SMT
    Nov 15 '18 at 0:26














1












1








1







You need to use PhotoImage from ImageTk.



Do this instead:



import tkinter as tk
import numpy as np
from PIL import Image, ImageTk

root = tk.Tk()

array = np.ones((40,40))*150
img = ImageTk.PhotoImage(image=Image.fromarray(array))

canvas = tk.Canvas(root,width=300,height=300)
canvas.pack()
canvas.create_image(20,20, anchor="nw", image=img)

root.mainloop()





share|improve this answer













You need to use PhotoImage from ImageTk.



Do this instead:



import tkinter as tk
import numpy as np
from PIL import Image, ImageTk

root = tk.Tk()

array = np.ones((40,40))*150
img = ImageTk.PhotoImage(image=Image.fromarray(array))

canvas = tk.Canvas(root,width=300,height=300)
canvas.pack()
canvas.create_image(20,20, anchor="nw", image=img)

root.mainloop()






share|improve this answer












share|improve this answer



share|improve this answer










answered Nov 14 '18 at 21:18









Mike - SMTMike - SMT

9,58221434




9,58221434













  • I get "TclError: image "pyimage1" doesn't exist". Does that code work for you?

    – hirschme
    Nov 15 '18 at 0:06











  • OK, the code works after adding the master=root attribute to PhotoImage.

    – hirschme
    Nov 15 '18 at 0:24











  • That should not matter here. I have never used master with PhotoImage and this code works fine on my end.

    – Mike - SMT
    Nov 15 '18 at 0:26



















  • I get "TclError: image "pyimage1" doesn't exist". Does that code work for you?

    – hirschme
    Nov 15 '18 at 0:06











  • OK, the code works after adding the master=root attribute to PhotoImage.

    – hirschme
    Nov 15 '18 at 0:24











  • That should not matter here. I have never used master with PhotoImage and this code works fine on my end.

    – Mike - SMT
    Nov 15 '18 at 0:26

















I get "TclError: image "pyimage1" doesn't exist". Does that code work for you?

– hirschme
Nov 15 '18 at 0:06





I get "TclError: image "pyimage1" doesn't exist". Does that code work for you?

– hirschme
Nov 15 '18 at 0:06













OK, the code works after adding the master=root attribute to PhotoImage.

– hirschme
Nov 15 '18 at 0:24





OK, the code works after adding the master=root attribute to PhotoImage.

– hirschme
Nov 15 '18 at 0:24













That should not matter here. I have never used master with PhotoImage and this code works fine on my end.

– Mike - SMT
Nov 15 '18 at 0:26





That should not matter here. I have never used master with PhotoImage and this code works fine on my end.

– Mike - SMT
Nov 15 '18 at 0:26




















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