Tkinter spinbox textvariable

Question

我想在Tkinter中創建一個簡單的GUI來顯示一些xy數據。數據安排在試驗中，目標是建立一個旋轉盒，讓您選擇要查看哪個試驗。我不明白爲什麼，但在下面的代碼文本變量的值沒有更新，所以我總是最終看到相同的審判。有什麼明顯的我失蹤了？代碼如下。 Tk.IntVar被設置在init中，與spinbox關聯（非常底部）並在updateDataToPlot中使用。

#graphing stuff 
import matplotlib 
matplotlib.use('TkAgg') 
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg, NavigationToolbar2TkAgg 
from matplotlib.figure import Figure 
from matplotlib.lines import Line2D 
import Tkinter as Tk 

import numpy as np 
import matplotlib.pyplot as plt 
from scipy import randn 
from collections import defaultdict 

class DataPlotter: 
    def __init__(self, ax, data): 

     self.ax = ax 
     self.canvas = ax.figure.canvas 
     self.data = data 

     self.xRaw = [] 
     self.yRaw = [] 

     self.lineRaw = Line2D(self.xRaw, self.yRaw, animated=True, marker = None, color = 'black') 
     self.ax.add_line(self.lineRaw) 

     self.background = None 
     self.canvas.mpl_connect('draw_event', self.updateBackground) 
     self.ax.set_ylim(-3,3) 
     self.ax.set_xlim(-3,3) 

     self.ax.set_xlabel('X Pos (mm)') 
     self.ax.set_ylabel('Y Pos (mm)') 

     self.TrialNum = Tk.IntVar() 
     self.TrialNum.set(0) 

    def updateBackground(self, event): 
     self.background = self.canvas.copy_from_bbox(self.ax.bbox) 

    def updateDataToPlot(self): 
     trialNum = self.TrialNum.get() 
     print trialNum 

     self.xRaw = self.data['polaris_rawPositions'][trialNum][:,0] 
     self.yRaw = self.data['polaris_rawPositions'][trialNum][:,1] 

     self.updateView() 

    def updateView(self): 
     if self.background is None: return True 

     self.ax.figure.canvas.draw() 
     self.canvas.restore_region(self.background) 

     self.lineRaw.set_data(self.xRaw, self.yRaw) 
     self.ax.draw_artist(self.lineRaw) 

     self.canvas.blit(self.ax.bbox) 

data = defaultdict(list) 
for i in range(100): 
    data['polaris_rawPositions'].append(randn(200,2)) 

root = Tk.Tk() 
root.wm_title("Data Explorer") 

f = Figure() 
ax = f.add_subplot(111) 

canvas = FigureCanvasTkAgg(f, master=root) 
canvas.get_tk_widget().pack(side=Tk.TOP, fill=Tk.BOTH, expand=1) 
canvas.show() 

Plotter = DataPlotter(ax, data) 

spinbox = Tk.Spinbox(master=root, textvariable = Plotter.TrialNum, command = Plotter.updateDataToPlot, fg= 'black', from_ = 0, to = 100, increment = 1) 
spinbox.pack(side=Tk.BOTTOM, anchor='e', padx = 5) 

root.mainloop() 

Answer 1

我這裏測試的tk.spinbox和完美的工作作爲您的佈局，只是檢查你的代碼，你不獲得任何異常？

#self.data = '/data/data', is this right? 
#'/data/data'['polaris_rawPositions'] 
#also [:,0] using period, should use dots [:.0] 
self.xRaw = self.data['polaris_rawPositions'][trialNum][:,0] 

也爲調試porpuse嘗試把一個打印那裏，所以你可以檢查值

trialNum = self.TrialNum.get() 
print(trialNum) 

對不起，如果我失去了一些東西，我真的從來不碰matplotlib模塊。