如何从因子变量(以及ggplot图表)中删除NA? [英] How to remove NA from a factor variable (and from a ggplot chart)?

问题描述

由于ggplot将它们包括在图中，就好像它们是另一个类别/级别一样，我对因子变量中的NA有问题.我想删除丢失的数据. 很抱歉，我目前没有任何方便的代码，我试图从在data()处找到的数据集中删除因子水平，但它不起作用.

I have a problem with NA in a factor variable since ggplot includes them in the plot as if they are another category/level. I would like to drop the missing data. I am sorry I don't have code handy at the moment, I tried to remove factor levels from dataset that I found at data() and it did not work.

有人遇到了同样的问题吗?

Had someone the same problem?

我尝试了此处建议的解决方案从以下位置删除未使用的因子水平: ggplot条形图，但出现错误

I tried the solution suggested here Remove unused factor levels from a ggplot bar plot but I get an error

错误:mycode中出现意外符号

Error: unexpected symbol in: mycode

有人可以提出建议吗?

此外，如果无法从ggplot代码中删除它们，该如何从因子变量中删除NA?

Also, if there is no way to remove them from inside the ggplot code, how can I remove the NA from a factor variable?

推荐答案

假设您的数据位于名为dat

assuming your data is in a data frame called dat

newdat <- dat[!is.na(dat$Factor), ]

不确定如何解决ggplot代码内部的问题

not sure how to solve the problem inside of ggplot code

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