错误: unexpected symbol在"plot(sale,type="o',col="blue"里

这个错误是因为你在 `plot()` 函数的参数列表中使用了单引号而不是双引号。在R语言中，字符串需要使用双引号括起来。你需要将 `type="o',col="blue"` 中的单引号改为双引号，如下所示：

plot(sale, type = "o", col = "blue")

尝试这样修改代码看看是否能够解决问题。

相关问题

Error: unexpected symbol in: " data = a addOverall"

This error is likely due to a missing operator or a syntax error in the code. Without more context or information about the code, it is difficult to determine the exact cause of the error. However, here are a few possible solutions or suggestions:

- Check for any missing or misplaced operators, such as commas, parentheses, brackets, or quotation marks.
- Make sure that the code is properly formatted and indented, to help identify any syntax errors or mismatches.
- Verify that all variables and functions are properly defined and initialized before they are used.
- Consider using a code editor or IDE that provides syntax highlighting or error checking features to help identify and fix errors more easily.
- If the error persists, try to isolate the problematic code and run it separately to see if the error message provides more specific information.

numvar=c("or" ,"or_lci95","or_uci95") Error: unexpected symbol in: " colClasses ="character" ) numvar"

这个错误提示可能是因为代码中存在语法错误。请检查一下代码是否正确，比如是否漏掉了某个括号、引号或符号等。在这段代码中，似乎引号没有配对，你可以尝试修改一下，让代码符合 R 语言的语法要求，例如这样：

numvar <- c("or", "or_lci95", "or_uci95")

这样代码就可以正确运行了。