在Python中绘制同一图中的列表列表 [英] Plotting list of lists in a same graph in Python

问题描述

我试图将(x,y)绘制为y = [[1,2,3],[4,5,6],[7,8,9]].

说，len(x) = len(y[1]) = len(y[2]) .. y的长度由用户输入决定.我想在同一张图中绘制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.

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.

我也尝试过:plt.plot(x,y[i] for i in range(1,len(y)))

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()

推荐答案

假定x的一些示例值，下面的代码可以为您提供所需的输出.

Assuming some sample values for x, below is the code that could give you the desired output.

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()

假设:x和y中的任何元素都具有相同的长度. 想法是逐个元素地读取，以便构造列表(x,y[0]'s)，(x,y[1]'s)和(x,y[n]'s.

Assumptions: x and any element in y are 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.

已如果y包含更多列表，请修改代码.

Edited: Adapt the code if y contains more lists.

以下是我在这种情况下得到的情节:

Below is the plot I get for this case:

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