In grid.Call.graphics(C_upviewport, as.integer(n))

As an AI language model, I do not have access to the context in which this line of code is being used. However, I can provide some general information about the function and its parameters.

The function grid.Call.graphics() is part of the graphics package in R and is used to create graphical output. The C_upviewport parameter is a function that sets up a new viewport (a rectangular region of the graphics device) in the current viewport. The as.integer(n) parameter is used to specify the number of rows or columns in the new viewport.

Overall, this line of code appears to be setting up a new viewport with a specified number of rows or columns for use in creating graphical output.

相关问题

Error in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y, : 字体类别出错

这个错误通常是因为在绘制图形时使用了无法识别的字体。您可以尝试以下操作：

1. 检查您的代码中是否有手动设置字体的语句，如果有，请尝试注释掉或者修改字体。

2. 检查您的系统中是否有设置好的字体库，如果没有，请尝试安装或者添加字体库。

3. 尝试在绘图函数中指定已知的字体类型，例如： font.family = "Arial"。

如果以上三种情况都无法解决问题，您可以提供更多的上下文信息和背景，以便我们更好地帮助您解决问题。