在 Python 中的同一图中绘制列表列表
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Plotting list of lists in a same graph in Python
提问by sivasudhan
I am trying to plot (x,y)where as y = [[1,2,3],[4,5,6],[7,8,9]].
我试图绘制(x,y)where as y = [[1,2,3],[4,5,6],[7,8,9]]。
Say, len(x) = len(y[1]) = len(y[2])..
The length of the y is decided by the User input. I want to plot multiple plots of y in the same graph i.e, (x, y[1],y[2],y[3],...). When I tried using loop it says dimension error.
说，len(x) = len(y[1]) = len(y[2]).. y 的长度由用户输入决定。我想在同一个图中绘制 y 的多个图，即(x, y[1],y[2],y[3],...). 当我尝试使用循环时，它说dimension error。
I also tried: plt.plot(x,y[i] for i in range(1,len(y)))
我也试过： plt.plot(x,y[i] for i in range(1,len(y)))
How do I plot ? Please help.
我如何绘制？请帮忙。
for i in range(1,len(y)):
plt.plot(x,y[i],label = 'id %s'%i)
plt.legend()
plt.show()
回答by Sreejith Menon
Assuming some sample values for x, below is the code that could give you the desired output.
假设 x 的一些示例值，下面是可以为您提供所需输出的代码。
import matplotlib.pyplot as plt
x = [1,2,3]
y = [[1,2,3],[4,5,6],[7,8,9]]
plt.xlabel("X-axis")
plt.ylabel("Y-axis")
plt.title("A test graph")
for i in range(len(y[0])):
plt.plot(x,[pt[i] for pt in y],label = 'id %s'%i)
plt.legend()
plt.show()
Assumptions: xand any element in yare of the same length.
The idea is reading element by element so as to construct the list (x,y[0]'s), (x,y[1]'s)and (x,y[n]'s.
假设：x和任何元素y的长度相同。这个想法是逐个读取元素以构造列表(x,y[0]'s),(x,y[1]'s)和(x,y[n]'s。
Edited: Adapt the code if ycontains more lists.
编辑：如果y包含更多列表，则调整代码。
Below is the plot I get for this case:
下面是我为这个案例得到的情节：
回答by Nathan Pyle
Use a for loop to generate the plots and use the .show()method after the for loop.
使用 for 循环生成图并.show()在 for 循环之后使用该方法。
import matplotlib.pyplot as plt
for impacts in impactData:
timefilteredForce = plt.plot(impacts)
timefilteredForce = plt.xlabel('points')
timefilteredForce = plt.ylabel('Force')
plt.show()
impactData is a list of lists.
ImpactData 是一个列表列表。
