我有一个long格式的df。这是一个示例：
Dates Names Point.Forecast
1 2000-03-01 MSCI ACWI 0.16309946
2 2000-04-03 MSCI ACWI 0.21412161
3 2000-05-01 MSCI ACWI 0.04679327
4 2000-03-01 DJGlbl 0.1810070
5 2000-04-03 DJGlbl 0.1293746
6 2000-05-01 DJGlbl 0.7411549
7 2000-03-01 IBOXX 0.2861171
8 2000-04-03 IBOXX 0.25387063
9 2000-05-01 IBOXX 0.29944246
str(df)
'data.frame': 3408 obs. of 3 variables:
$ Dates : chr "2000-03-01" "2000-04-03" "2000-05-01" "2000-06-01" ...
$ Names : chr "MSCI ACWI" "MSCI ACWI" "MSCI ACWI" "MSCI ACWI" ...
$ Point.Forecast: num 0.1631 0.2141 0.0468 -0.1833 0.252 ...
我想将它转换为wide格式，所以它看起来像：
Dates MSCI ACWI DJGlbl IBOXX
2000-03-01 0.16309946 0.21412161 0.04679327
2000-04-03 0.1810070 0.1293746 0.7411549
2000-05-01 0.2861171 0.25387063 0.29944246
我得到一个error：
dfd=dcast(df,Dates~Names,value.var="Point.Forecast")
Aggregation function missing: defaulting to length
有什么建议么？
此致