Matlab这段代码哪里错了：Error using plot Invalid data argument. Error in ppmchange (line 17) h = plot(x, y1, '-o', 'color', [79/255 129/255 189/255], x, y2, '-+', 'color', [128/255 100/255 162/255], x, y3, '-*', 'color', [155/255 187/255 89/255], x, y4, '-s', 'color', [192/255 80/255 77/255], 'linewidth', 1.6, 'markersize', 8, 'MarkerEdgeColor', 'k');

这段代码中的问题在于参数列表中每个数据序列的颜色值没有正确指定。在 MATLAB 中，颜色值应该以 RGB（红绿蓝）的形式提供，并且每个值应该在0到1之间。

请将代码中的颜色值部分修改为以下形式：

h = plot(x, y1, '-o', 'color', [79/255, 129/255, 189/255], x, y2, '-+', 'color', [128/255, 100/255, 162/255], x, y3, '-*', 'color', [155/255, 187/255, 89/255], x, y4, '-s', 'color', [192/255, 80/255, 77/255], 'linewidth', 1.6, 'markersize', 8, 'MarkerEdgeColor', 'k');

这样修改后，代码应该可以正确执行。如果还有其他错误，请提供更多的上下文或错误信息，以便我能够更好地帮助您解决问题。

相关问题

plot(mcmc.mh, main="MH Algorithm") Error in character(ncol(y)) : invalid 'length' argument

这个错误通常是因为你的输入数据 `y` 的维度不正确导致的。请确保 `y` 是一个向量或矩阵，并且它的列数大于 1。如果 `y` 是一个数据框，则应该使用 `as.matrix()` 将其转换为矩阵，例如：

y <- as.matrix(data.frame(x = c(1, 2, 3), y = c(4, 5, 6)))
plot(mcmc.mh(y), main = "MH Algorithm")

如果你已经确定 `y` 的维度正确，那么可能是 `mcmc.mh` 函数的问题。请确保你已经正确地安装和加载了所需的 R 包，并且检查 `mcmc.mh` 的文档以了解其正确的用法。

plot() got an unexpected keyword argument 'y'

This error message usually occurs when you are trying to pass an invalid argument to the plot() function in Python.

The 'plot()' function in Python is used to create line plots. It takes two mandatory arguments 'x' and 'y', which represent the values for x-axis and y-axis respectively. Additionally, it also accepts several optional arguments to customize the plot.

In this case, the error message 'plot() got an unexpected keyword argument 'y'' indicates that you are trying to pass an invalid argument to the plot() function. Specifically, you are trying to pass an argument named 'y', which is not a valid argument for the plot() function.

To fix this issue, you should check the arguments you are passing to the plot() function and make sure that they are valid. The valid arguments for the plot() function are 'x', 'y', 'color', 'marker', 'linestyle', 'linewidth', 'label', etc.

For example, if you want to create a line plot with x and y values, you can use the following code:

import matplotlib.pyplot as plt

x = [1, 2, 3, 4, 5]
y = [10, 20, 30, 40, 50]

plt.plot(x, y)
plt.show()

This code will create a line plot with x-axis values from 1 to 5 and y-axis values from 10 to 50.