This casual note is to record how to use R to replace the NA with 0 or any string. Generally, NA can be generated for different reasons, like unclean data, data transformation, or missing values. Otherwise, we have to convert NA to zero or other stings in order to present them in tab...
避免使用 which。它是一个外部进程,相对而言 hash、type 或 command 这样的内置程序执行效率更高,你还...
在第一次调用replace_na(df$n,0)时,第一个参数是一个向量(df$n),replace必须是一个值(标量)...
在第一次调用replace_na(df$n,0)时,第一个参数是一个向量(df$n),replace必须是一个值(标量)。然而,在第二个表达式df%>%replace_na(n,0)中,第一个data参数是一个框架,所以replace必须是一个命名列表,其中的名称指示要查找和替换NA值的列。我们将使用list(n=0),因为您希望在名为n的列中将NA值...
Using Manually Predicted Values The process of constructing a similar plot inggplot()follows the same general procedure as that for a simple linear regression. First, make a data frame that has the observed variables used in the model and predicted values and confidence limits for each observation...