Thanks for point TKinter to me. However, I'm stuck again.
I've tried two approaches, one is following what you suggested:
""" Tkinter """
import Tkinter as tk
root = tk.Tk()
from PIL import Image, ImageTk
image = ImageTk.PhotoImage(Image.open('map.png')) # load saved image
#image = ImageTk.PhotoImage(im) # load image from StringIO
tk.Label(root, image=image).pack()
The other is to convert the PIL image to array and show with imshow()
""" PIL to array """
from matplotlib.image import pil_to_array
rgba = pil_to_array(Image.open('map.png')) # load saved image
#rgba = pil_to_array(im) # load image from StringIO
rgba = rgba.astype(np.float32)/255.
imshow(rgba)
Both work fine for a saved image. However, they return strange errors
when I tried to apply them to the image from "StringIO", or even for a
saved image in the same script used to generate them. I guess that
something I import from matplotlib is causing a conflict here.
Here are the error messages:
""" Tkinter """
_tkinter.TclError: image "pyimage9" doesn't exist
""" PIL to array """
terminate called after throwing an instance of 'char const*'
I'm attaching the script.
Aborted
# -*- coding: utf-8 -*-
import matplotlib
import numpy as np
import matplotlib.pyplot as plt
import StringIO, Image
#matplotlib.use('Agg')
matplotlib.use('TkAgg')
from mpl_toolkits.basemap import Basemap
lonmin = -87.5
lonmax = -22.5
latmin = -59.5
latmax = 14.5
m = Basemap( projection = 'merc', llcrnrlat = latmin, urcrnrlat = latmax, llcrnrlon = lonmin, urcrnrlon = lonmax, resolution = 'c' )
fig = plt.figure()
ax = fig.add_subplot(111)
m.ax = ax
m.bluemarble()
""" trim image """
imgdata = StringIO.StringIO()
fig.savefig(imgdata, dpi=150, format='png')
imgdata.seek(0) # rewind the data
im = Image.open(imgdata)
def trim(im, border):
from PIL import ImageChops
bg = Image.new(im.mode, im.size, border)
diff = ImageChops.difference(im, bg)
bbox = diff.getbbox()
if bbox:
return im.crop(bbox)
else:
# found no content
raise ValueError("cannot trim; image was empty")
im = trim(im,'white')
""" PIL to array """
#from matplotlib.image import pil_to_array
#rgba = pil_to_array(Image.open('mapa.png'))
##rgba = pil_to_array(im)
#rgba = rgba.astype(np.float32)/255.
#imshow(rgba)
#show()
""" error when used in the script:
terminate called after throwing an instance of 'char const*'
Aborted"""
""" Tkinter """
import Tkinter as tk
root = tk.Tk()
from PIL import Image, ImageTk
image = ImageTk.PhotoImage(Image.open('mapa.png'))
#image = ImageTk.PhotoImage(im)
tk.Label(root, image=image).pack()
""" error when used in the script:
_tkinter.TclError: image "pyimage9" doesn't exist """------------------------------------------------------------------------------
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