理想情况下,此实现是在图例标签旁边使用十字来实现的,可以单击该标签以将其从图中删除。现在,我试图通过单击图例条目的行以从绘图中删除图形来做到这一点。我是通过字典将图例条目映射到情节上的行的方式来实现的。我遇到的问题是,只要将多条线添加到绘图中,我就可以删除除第一条绘图以外的所有线。我怀疑这个问题可能是由于我重新创建了图例,可能与字典映射搞混了。
像这样在类init方法中初始化图
f = Figure(figsize=(1, 1), dpi=100)
self.chart = f.add_subplot(111)
self.lined = dict()
self.canvas = FigureCanvasTkAgg(f, self)
self.canvas.draw()
self.canvas.get_tk_widget().pack(side=tk.BOTTOM, fill=tk.BOTH, expand=True)
self.canvas.mpl_connect('pick_event', self.remove_graph)
这些是与绘制线条并将其删除有关的功能。
def plot_prices(self, event=None):
ticker = self.entry.get().upper()
with open(suffixed_ticker_dump_path, 'rb') as tickers:
tickers = pickle.load(tickers)
if ticker not in tickers:
self.popupmsg("Invalid ticker input. Enter a valid ticker.")
else:
df = pd.read_csv(os.path.join(daily_data_dir, '{}.csv'.format(ticker)),
index_col=0, parse_dates=True)
prices = df['adjusted_close'].replace(0, np.nan)
line,=self.chart.plot(prices.interpolate(), label=ticker)
self.leg = self.chart.legend(loc='lower right')
legline = self.leg.get_lines()[-1]
legline.set_picker(5)
self.lined[legline] = line
self.canvas.draw()
def remove_graph(self, event=None):
legline = event.artist
origline = self.lined[legline]
origline.remove()
self.leg = self.chart.legend(loc='lower right')
self.canvas.draw()
答案 0 :(得分:-1)
最终通过简单地清除或重设字典映射图例条目到图表上的线条(绘制了一条线或删除了一条线)而解决了该问题。我想它由于某些技术性而无法使用,因为图例和图表中对线条的引用有所不同,除非有人有更好的解决方案,否则我将使用它,因为它不需要太多代码。
def plot_prices(self, event=None):
ticker = self.entry.get().upper()
with open(suffixed_ticker_dump_path, 'rb') as tickers:
tickers = pickle.load(tickers)
if ticker not in tickers:
self.popupmsg("Invalid ticker input. Enter a valid ticker.")
else:
df = pd.read_csv(os.path.join(daily_data_dir, '{}.csv'.format(ticker)),
index_col=0, parse_dates=True)
prices = df['adjusted_close'].replace(0, np.nan)
line,=self.chart.plot(prices.interpolate(), label=ticker)
self.leg = self.chart.legend(loc='lower right')
self.reset_line_dict()
self.canvas.draw()
def remove_graph(self, event=None):
legline = event.artist
origline = self.lined[legline]
self.chart.lines.remove(origline)
self.leg = self.chart.legend(loc='lower right')
self.reset_line_dict()
self.canvas.draw()
def reset_line_dict(self):
self.lined.clear()
for legline, origline in zip(self.leg.get_lines(), self.chart.get_lines()):
legline.set_picker(5) # 5 pts tolerance
self.lined[legline] = origline