Error in plot.rpart(model) : fit is not a tree, just a root
时间: 2024-06-03 14:07:33 浏览: 13
As an AI language model, I don't have the context of your code, so I'm going to provide a general answer to this error message.
This error message typically occurs when you try to plot a model that has only one node, or a root, and no branches. This often happens when you have a small dataset, or when the model is too simple to generate a tree structure.
To resolve this error, you can try to increase the complexity of the model or use a larger dataset. Alternatively, you can try to plot the model in a different way, such as using a bar chart or a heatmap.
相关问题
如何解决这个问题Error in plot.xy(xy.coords(x, y), type = type, ...) : plot.new has not been called yet
这个问题通常发生在你想要在 R 里绘制一张图时,但是在调用 `plot()` 函数之前没有调用 `plot.new()` 函数。解决这个问题的方法是在调用 `plot()` 函数之前先调用 `plot.new()` 函数。例如:
```
plot.new()
plot(x, y)
```
在这个例子中,我们先调用了 `plot.new()` 函数,然后再调用 `plot()` 函数来绘制图表。这样就可以避免出现 "Error in plot.xy(xy.coords(x, y), type = type, ...) : plot.new has not been called yet" 的错误。
Error in plot.xy(xy.coords(x, y), type = type, ...) : plot.new has not been called yet
这个错误通常发生在你想要绘制一个新的图形之前没有调用 `plot.new()`。`plot.new()` 函数会创建一个新的空图形,如果你想要在这个图形上绘制的话,就需要先调用 `plot.new()`。你可以在绘图代码之前添加 `plot.new()`,或者在绘图之前调用另一个函数,例如 `plot()` 或者 `hist()`,这些函数会自动调用 `plot.new()`。希望这个回答能够帮到你!
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