[Tutor] Matplotlib in Tkinter

Sun Feb 26 16:02:22 EST 2017

Hi,

(CCing Python Tutor again). I meant something like below. I am sending this from my phone, which is cumbersome to use an understatement, so the indentation is lost. But I hope you get the idea. You need to inherit from Frame.

Btw, this is useful if you would like to create an interactive graph: http://stackoverflow.com/questions/22052532/matplotlib-python-clickable-points

from Tkinter import *

import matplotlib
matplotlib.use("TkAgg")
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg, NavigationToolbar2TkAgg
from matplotlib.figure import Figure

class PlotGraph(Frame):. # inherits from Frame
def __init__(self, root, xaxis, yaxis):
Frame.__init__(self, root, *args, **kwargs)  # execute __init__ from super class
self.root = root
root.title("Plotting a graph")
self.xaxis = xaxis
self.yaxis = yaxis
self.f = Figure(figsize = (5,5), dpi = 90)
self.a = self.f.add_subplot(111)
self.a.plot(self.xaxis,self.yaxis)

self.canvas = FigureCanvasTkAgg(self.f,self.root)
self.canvas.show()
self.canvas.get_tk_widget().pack(side = TOP, fill = BOTH, expand = True)

# Navigation Toolbar:
self.toolbar = NavigationToolbar2TkAgg(self.canvas,self.root)
self.toolbar.update()
self.canvas._tkcanvas.pack()

if __name__ == '__main__':
root = Tk()
root.title( "Creating a plot")
xaxis = [1,2,3,4,5,6]
yaxis = [7,8,9,10,11,12]
my_plot = PlotGraph(root, xaxis, yaxis, relief=SUNKEN) # you can add any of the arguments for the Frame initializer
my_plot.grid(row=0, column=0) # use grid here
button = Button (root, text="quit", fg='red', command=root.quit)
button.grid(row=1, column=0)
root.mainloop()
________________________________
From: Pooja Bhalode <poojabhalode11 at gmail.com>
Sent: Sunday, February 26, 2017 3:47:37 PM
To: Albert-Jan Roskam
Subject: Re: [Tutor] Matplotlib in Tkinter

Hi Albert,

Thank you so much for getting back to me. I tried your approach but it still fails for me. I created a class with pack(). But when I try using grid for the Label highlighted below, the gui hangs up and does not show anything.
Can you please shed more light on how to use my_plot as one unit and use grid packing for its instances?
Thank you so much.

Also, does using class with a pack layout help with screen blackening or two plots getting created?

Please let me know.
Yours truly,
Pooja

Code:

import matplotlib
matplotlib.use("TkAgg")
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg, NavigationToolbar2TkAgg
from matplotlib.figure import Figure

from Tkinter import *
root = Tk()

Label(root, text = "Creating a plot").pack()

class PlotGraph:
def __init__(self, root, xaxis, yaxis):
self.root = root
root.title("Plotting a graph")
self.xaxis = xaxis
self.yaxis = yaxis
self.f = Figure(figsize = (5,5), dpi = 90)
self.a = self.f.add_subplot(111)
self.a.plot(self.xaxis,self.yaxis)

self.canvas = FigureCanvasTkAgg(self.f,self.root)
self.canvas.show()
self.canvas.get_tk_widget().pack(side = TOP, fill = BOTH, expand = True)

# Navigation Toolbar:
self.toolbar = NavigationToolbar2TkAgg(self.canvas,self.root)
self.toolbar.update()
self.canvas._tkcanvas.pack()

self.CloseButton = Button(root, text = "Close", command = root.quit)
self.CloseButton.pack()

xaxis = [1,2,3,4,5,6]
yaxis = [7,8,9,10,11,12]
my_plot = PlotGraph(root, xaxis, yaxis)
root.mainloop()

On Sun, Feb 26, 2017 at 1:22 AM, Albert-Jan Roskam <sjeik_appie at hotmail.com<mailto:sjeik_appie at hotmail.com>> wrote:
(Sorry for top-posting)

Hi, I recently ran into the same problem when I wanted to embed an interactive Matplotlib choropleth in my Tkinter app. I solved it by creating a separate class MyPlot for plot + toolbar (it inherited from Tkinter.Frame). MyPlot internally uses the pack geometry manager as given in the example from the mpl website. Then, you use MyPlot as 'one unit', and you use the grid method on its instances.

Best wishes,
Albert-Jan
________________________________
From: Tutor <tutor-bounces+sjeik_appie=hotmail.com at python.org<mailto:hotmail.com at python.org>> on behalf of Pooja Bhalode <poojabhalode11 at gmail.com<mailto:poojabhalode11 at gmail.com>>
Sent: Sunday, February 19, 2017 7:36:32 PM
To: tutor at python.org<mailto:tutor at python.org>
Subject: [Tutor] Matplotlib in Tkinter

Hi,

I am trying to create a graph in Tkinter window. And following is a snipet
of the code.

Code:
  simroot = Toplevel(root)
simroot.title("Simulation of experiments")
Label(simroot, text = "Displaying concentration profiles with respect to
time:").pack(side = TOP)

Label(simroot, text = "Select the experiments to be displayed: ").pack(side
= TOP)
optionexp = ['Experiment 1', 'Experiment 2', 'Experiment 3', 'Experiment
4', 'Experiment 5']
expsim = StringVar()
dropexp = OptionMenu(simroot, expsim, *optionexp)
dropexp.pack(side = TOP)
dropexp.config(width = 15)

# Row 1 would print the name of the experiment selected and the species
displayed would be in row3.
Label(simroot, text = "Select concentration species:").pack(side = TOP)
concsim = StringVar()
optionlistsim = ['A', 'B', 'C', 'D', 'E']
dropsim = OptionMenu(simroot, concsim, *optionlistsim)
dropsim.pack(side = TOP)
dropsim.config(width = 8)
Label(simroot, text = "").pack(side = LEFT)

def Submitplot():
print "Create plot"

f = Figure(figsize = (5,5), dpi = 80)
a = f.add_subplot(111)
a.plot([1,2,3,4,5],[10,11,12,14,15])

canvas = FigureCanvasTkAgg(f, simroot)
canvas.show()
canvas.get_tk_widget().pack(side = BOTTOM)

toolbar = NavigationToolbar2TkAgg(canvas, simroot)
toolbar.update()
canvas._tkcanvas.pack(side = BOTTOM)
Button(simroot, text = "Submit and Plot", command = Submitplot).pack(side =
BOTTOM)

Here, the output comes as:
[image: Inline image 1]
The problem is I am not able to use grid layout instead of pack (used
here). I want to place the text to the left, top side in the window.

Also, when I hover the mouse over the figure and the x and y values are
shown, it flickers really fast and the white space in the Tkinter window
turns black when it flickers. Can someone please tell me what the issue
could be? Also, the toolbar should have been at the bottom but it shows up
at the top.

I am using pack in this Toplevel of the main root whereas in the rest of
the code, I am using grid layout. I switched to pack for this
snipet because I could not figure out how grid would work for this part.

Can someone please let me know how to correct these issues?
Thankyou so much.

Pooja
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