I am running a loop. In this loop new data frame(with same number and name of columns) is created everytime and is appended in the previous table. Ex: for i = 1
我正在运行一个循环。在此循环中，每次都会创建新数据框（具有相同的列数和名称），并将其附加到上一个表中。例如：因为i = 1
i have df1 = df1(n rows, m column)
df1$new_col <- "some value"
df = rbind(df0,df1)
for i = 2
i have df1 = df1(0 rows, m column)
df1$new_col <- "some val"
Error in `$<-.data.frame`(`*tmp*`, "new_col", value = "some_value") :
replacement has 1 row, data has 0
how do i add a new column to a df with zero rows ?
如何将新列添加到零行的df？
1 个解决方案
#1
1
You can try something like this:
你可以尝试这样的事情：
df<-data.frame()
dim(df)
x<-1:100
df=rbind(df,x)
df=t(df)
dim(df)
#1
1
You can try something like this:
你可以尝试这样的事情：
df<-data.frame()
dim(df)
x<-1:100
df=rbind(df,x)
df=t(df)
dim(df)