在R中选择一行，结果是一个新表

Question

I try to select just one row in my data but the result come out in new data and I can't compute the mean of this, because the header is showing. But when I select the column, there is no problem and I can see the result as a value. You can see the result of the code in the photo that y is in data and X is in the value.

y=mydata[1,]
X=mydata[,4]

enter image description here

Answer 1

you should use rowMeans. When you select a row you are selecting multiple variables and that results in giving you a dataframe.