matshow() missing 1 required positional argument: 'Z'
时间: 2023-10-20 13:07:34 浏览: 45
The error "matshow() missing 1 required positional argument: 'Z'" occurs when the matshow() function in the matplotlib library is called without passing the required argument 'Z', which is the data to be plotted as a matrix.
To fix this error, make sure that you pass a valid data matrix as the 'Z' argument to the matshow() function. For example:
``` python
import numpy as np
import matplotlib.pyplot as plt
# create a sample data matrix
data = np.random.rand(5, 5)
# plot the data matrix using matshow()
plt.matshow(data)
# show the plot
plt.show()
```
In this example, we generate a random 5x5 matrix using numpy and then plot it using the matshow() function. The resulting plot shows the matrix as a colored grid.