I i am trying Load an image from the file chooser from a screen and trying to show a the matplotlib graph of the image in an other screen for which i have used Kivy_matplotlib library here is the code
import numpy as np
import matplotlib.widgets as widgets
import PIL
import matplotlib as mpl
from matplotlib import pyplot as plt
from PIL import Image
from kivy.app import App
from kivy.lang import Builder
from kivy_matplotlib import MatplotFigure, MatplotNavToolbar
from kivy.uix.screenmanager import ScreenManager, Screen
kv = """
<ScreenTwo>:
id:sc1
BoxLayout:
FileChooserListView:
id: filechooser
on_selection: my_widget.selected(filechooser.selection)
Button:
text: "Go to Screen 1"
on_press:
root.manager.transition.direction = 'right'
root.manager.current = 'screen_one'
<ScreenOne>
BoxLayout:
orientation: 'vertical'
Button:
text:"Choose File"
on_press:
root.manager.transition.direction = 'right'
root.manager.current = 'screen_two'
MatplotFigure:
id: figure_wgt
size_hint: 1, 0.9
MatplotNavToolbar:
id: navbar_wgt
size_hint: 1, 0.1
figure_widget: figure_wgt
"""
class ScreenOne(Screen):
pass
class ScreenTwo(Screen):
pass
# The ScreenManager controls moving between screens
screen_manager = ScreenManager()
# Add the screens to the manager and then supply a name
# that is used to switch screens
screen_manager.add_widget(ScreenOne(name="screen_one"))
screen_manager.add_widget(ScreenTwo(name="screen_two"))
class testApp(App):
title = "Test Matplotlib"
def build(self):
# Matplotlib stuff, figure and plot
fig = mpl.figure.Figure(figsize=(2, 2))
def onselect(eclick, erelease):
if eclick.ydata>erelease.ydata:
eclick.ydata,erelease.ydata=erelease.ydata,eclick.ydata
if eclick.xdata>erelease.xdata:
eclick.xdata,erelease.xdata=erelease.xdata,eclick.xdata
ax.set_ylim(erelease.ydata,eclick.ydata)
ax.set_xlim(eclick.xdata,erelease.xdata)
fig.canvas.draw()
fig = plt.figure()
ax = fig.add_subplot(111)
filename="phase.jpg"
im = Image.open(filename)
arr = np.asarray(im)
plt_image=plt.imshow(arr)
rs=widgets.RectangleSelector(
ax, onselect, drawtype='box',
rectprops = dict(facecolor='red', edgecolor = 'black', alpha=0.5, fill=True))
#plt.show()
print(arr)
# Kivy stuff
root = Builder.load_string(kv)
figure_wgt = ScreenOne.ids['figure_wgt'] # MatplotFigure
figure_wgt.figure = fig
return screen_manager
#testApp().run()
sample_app = testApp()
sample_app.run()
I am stuck as I am getting the following traceback
/home/naveen/Environments/aagnaa/bin/python "/home/naveen/Py files/tut/select and crop2 (copy).py"
[INFO ] [Logger ] Record log in /home/naveen/.kivy/logs/kivy_17-06-01_150.txt
[INFO ] [Kivy ] v1.9.1
[INFO ] [Python ] v3.5.2 (default, Nov 17 2016, 17:05:23)
[GCC 5.4.0 20160609]
[INFO ] [Factory ] 179 symbols loaded
[INFO ] [Image ] Providers: img_tex, img_dds, img_gif, img_sdl2, img_pil (img_ffpyplayer ignored)
[INFO ] [OSC ] using <multiprocessing> for socket
[INFO ] [Window ] Provider: sdl2(['window_egl_rpi'] ignored)
[INFO ] [GL ] OpenGL version <b'2.1 Mesa 12.0.6'>
[INFO ] [GL ] OpenGL vendor <b'Intel Open Source Technology Center'>
[INFO ] [GL ] OpenGL renderer <b'Mesa DRI Intel(R) Ironlake Mobile '>
[INFO ] [GL ] OpenGL parsed version: 2, 1
[INFO ] [GL ] Shading version <b'1.20'>
[INFO ] [GL ] Texture max size <8192>
[INFO ] [GL ] Texture max units <16>
[INFO ] [Window ] auto add sdl2 input provider
[INFO ] [Window ] virtual keyboard allowed, single mode, docked
Traceback (most recent call last):
File "/home/naveen/Py files/tut/select and crop2 (copy).py", line 97, in <module>
sample_app.run()
File "/usr/lib/python3/dist-packages/kivy/app.py", line 802, in run
root = self.build()
File "/home/naveen/Py files/tut/select and crop2 (copy).py", line 89, in build
figure_wgt = ScreenOne.ids['figure_wgt'] # MatplotFigure
TypeError: 'kivy.properties.DictProperty' object is not subscriptable
Process finished with exit code 1
Need help Thanks in advance
