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我试图打开一个excel文件并做回归分析,但出现了一些错误。所以我在这里writen的命令,如果有人会这么好来帮我我没有用过这个节目不仅仅是几次..R项目文件打开问题
> library(RODBC)
> library(mlogit)
Loading required package: Formula
Loading required package: statmod
Loading required package: lmtest
Loading required package: zoo
Attaching package: 'zoo'
The following object(s) are masked from 'package:base':
as.Date
Loading required package: maxLik
Loading required package: miscTools
> z<-odbcConnectExcel("C:\\2008 Racedata.xls")
> y<-sqlFetch(z,"Sheet1")
> x<-mlogit.data(y,choice="winner",shape="long",id.var="datekey",alt.var="horseno")
Error in `row.names<-.data.frame`(`*tmp*`, value = c("1.8", "1.11", "1.6", :
duplicate 'row.names' are not allowed
In addition: Warning message:
non-unique values when setting 'row.names': ‘10.2’, ‘10.4’, ‘10.8’, ‘100.7’, ‘101.1
你能请张贴在最起码'STR(Y)'的结果吗?你能否告诉我们过去对于不同数据集的类似分析是否有效?请阅读http://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example,并考虑相应地编辑您的文章... –
我不认为这是一个文件打开错误。你的错误发生在'mlogit.data'中,它对数据格式非常特别。也就是说,'mlogit'软件包有**全面的**手册和小插图,用于描述数据的外观。将您的数据格式与http://cran.r-project.org/web/packages/mlogit/mlogit.pdf比较 – Andrie