[英]How to add label to plot in matplotlib
I need to add label to graph lines.我需要为图形线添加标签。 Blue line represents left and red line represents right.
蓝线代表左,红线代表右。 How do I do that?
我怎么做? I used set_ylabel but that added label to left of graph as shown in it.
我使用了 set_ylabel 但在图表左侧添加了标签,如图所示。
self.fig = Figure(figsize=(6, 4), dpi=96)
self.ax = self.fig.add_subplot(111)
self.graph = FigureCanvasTkAgg(self.fig, master=self.win)
self.canvas = self.graph.get_tk_widget()
a = self.df["index"].unique()
line, = self.ax.plot(a,self.df.loc[self.df.foot == "right","total_force"].values)
self.ax.set_ylabel("right")
line2, = self.ax.plot(a,self.df.loc[self.df.foot == "left","total_force"].values)
self.clean_button()
self.clean_flush()
self.canvas.place(x= 150, y = 5)
You have to specify something more when you call the plot()
method: Instead of调用
plot()
方法时必须指定更多内容:而不是
line, = self.ax.plot(a,self.df.loc[self.df.foot == "right","total_force"].values)
Use用
line, = self.ax.plot(a,self.df.loc[self.df.foot == "right","total_force"].values,
label = "right")
line2, = self.ax.plot(a,self.df.loc[self.df.foot == "left","total_force"].values
label = "left")
And then show the legend using:然后使用以下方法显示图例:
self.ax.legend()
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