如何在python动画中添加图例标签
我正在使用Matplotlib/Python从数据库绘制数据(计数)。我不知道如何制作动画传奇。我希望图例显示线的当前值 代码是:如何在python动画中添加图例标签,python,animation,matplotlib,plot,Python,Animation,Matplotlib,Plot,我正在使用Matplotlib/Python从数据库绘制数据(计数)。我不知道如何制作动画传奇。我希望图例显示线的当前值 代码是: def db_count(): ### Connect to db and run query ... return count x_data, y_data = [], [] figure = plt.figure() count = db_count() line, = plt.plot_date(x_data, y_data, '-', la
def db_count():
### Connect to db and run query ...
return count
x_data, y_data = [], []
figure = plt.figure()
count = db_count()
line, = plt.plot_date(x_data, y_data, '-', label=count)
def update(frame):
x_data.append(datetime.now())
count = db_count()
y_data.append(count)
line.set_data(x_data, y_data)
figure.gca().autoscale_view()
figure.gca().relim()
return line,
animation = FuncAnimation(figure, update, interval=60000)
plt.xlabel('Time')
plt.ylabel('Counts')
plt.title('Total counts')
plt.legend(bbox_to_anchor=(1.05, 0.05))
plt.gcf().autofmt_xdate()
plt.xticks(rotation=45)
plt.show()
谢谢您需要使用
line在update
函数中设置行的标签。设置标签(计数)
,然后调用plt.legend()
:
@我没问题。如果某个答案对您有帮助,则您可以根据自己的意愿投票和/或接受该答案,如中所述
def db_count():
### Connect to db and run query ...
return count
x_data, y_data = [], []
figure = plt.figure()
count = db_count()
line, = plt.plot_date(x_data, y_data, '-', label=count)
def update(frame):
x_data.append(datetime.now())
count = db_count()
y_data.append(count)
line.set_data(x_data, y_data)
line.set_label(count) # set the label and draw the legend
plt.legend(bbox_to_anchor=(1.05, 0.05))
figure.gca().autoscale_view()
figure.gca().relim()
return line,
animation = FuncAnimation(figure, update, interval=60000)
plt.xlabel('Time')
plt.ylabel('Counts')
plt.title('Total counts')
plt.gcf().autofmt_xdate()
plt.xticks(rotation=45)
plt.show()