[R] help

[arun]

HI,

It is better to provide a reproducible example.  From the nature of the error, it looks like the problem is similar to the one in the link below:

http://r.789695.n4.nabble.com/mlogit-error-td4663601.html

A.K.


----- Original Message -----
From: "Haghpanahan, Houra" <hh132 at leicester.ac.uk>
To: "'r-help at r-project.org'" <r-help at r-project.org>
Cc: 
Sent: Sunday, September 1, 2013 12:35 PM
Subject: [R] help

Hi there,

I am trying to apply mlogit for a panel data set. I have 22 individuals (countries), for a 228 points in time domain, and 8 variables. I set my data in Excel in long format (I think!). I am trying to write a command to prepare data for mlogit by applying the following code.

mdat<- mlogit.data (dat ,choice = "y", id="id", shape = "long", alt.var = "y")
But I get the error below;

Error in `row.names<-.data.frame`(`*tmp*`, value = c("1.0", "1.0", "1.0",  :   duplicate 'row.names' are not allowed
In addition: Warning message:
non-unique values when setting 'row.names': '1.0', '100.1', '1000.0', '1001.1', '1002.0', '1003.0', '1004.0', '1005.0', '1006.0', '1007.0', '1008.0', '1009.0', '1010.0', '1011.1', '1012.2', '1013.1', '1015.0', '1016.0', '102.1', '1020.0', '1021.1', '1023.1', '1024.1', '1025.1', '1026.2', '1027.1', '103.1', '1030.1', '1034.1', '1036.0', '1037.1', '1038.0', '1039.0', '1040.1', '1042.2', '1043.1', '1044.2', '1045.1', '1046.1', '1048.1', '1049.0', '105.1', '1050.0', '1051.0', '1053.0', '1054.1', '1055.0', '1056.0', '1057.1', '1059.0', '106.1', '1061.1', '1062.1', '1063.0', '1064.0', '1065.0', '1066.0', '1067.0', '1068.0', '1069.0', '107.1', '1070.0', '1071.0', '1072.0', '1073.0', '1074.0', '1075.0', '1076.0', '1077.0', '1078.0', '1079.1', '1080.0', '1081.0', '1082.0', '1083.0', '1085.0', '1086.0', '1087.0', '1088.0', '1089.0', '109.1', '1090.0', '1091.0', '1092.0', '1093.0', '1095.0', '1096.0', '1097.1', '1098.2', '1099.1', '11.1', '110.0', '1101.1',
 '1102.0', '1103.0', '1104.1'!
, '1105.0', [... truncated]

I would say 'y' is an independent variable that takes 3 states i.e. 0,1,2.

By the way, when I run the following command, it seems every thin is fine without any error but in 'mdat' data,  'chid' and 'alt' would not appear! I think there is something wrong with that.
mdat <- mlogit.data(dat, id="id", choice="y",
shape = "long", varying = NULL, alt.levels=c("0", "1", "2"),sep = "")

Any help would be appreciated in advance.
Regards,
Houra


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