[R] Error in `[[<-.data.frame`(`*tmp*`, alt.name, value = integer(0)) with mlogit

[peter dalgaard]

> On 27 Jul 2017, at 18:03 , Jeff Newmiller <jdnewmil at dcn.davis.ca.us> wrote:
> 
> Looks like you need to pay attention to how you read in your data.  In general, you should always execute one statement at a time until you know your script is working.  All the errors after the first one are unhelpful to you or us. 
> 
> If you actually pay attention to what is in your horse.data data frame after you have read it in, the columns did not get separated out. The "csv" in in read.csv stands for "comma", and your file appears to use semicolons. Read the help for read.csv using
> 
> ?read.csv
> 
> and use the sep=";" argument. You should always use the str() function to look at your data and make sure it looks reasonable before you start trying to give it to other functions to analyze.

Or use read.csv2 which exists for that reason. (It may be "c" for comma, but in locales that use comma as the decimal point it is replaced by the semicolon, as you'll find out if you save an Excel file as CSV in, say, France. This is due to some idiotic decisions from early 1990s, but there you are...) 

-pd


> -- 
> Sent from my phone. Please excuse my brevity.
> 
> On July 27, 2017 8:01:12 AM PDT, sandoz at free.fr wrote:
>> Hi,
>> Please  help about the error I am getting after the h1.dat<- line :
>> this line worked with much more independant variables and bigger data.
>> This time I want to work with just 2 variables cteD & cteTh.
>> What is wrong ?
>> 
>>> setwd("C:/Rstudio/Trot")
>>> library(mlogit)
>>> horse1.data<-read.csv("cte2.csv")
>>> 
>> h1.dat<-mlogit.data(data=horse1.data,choice="win",chid.var="raceid",alt.var="nbChev",shape="long")
>> 
>> Error in `[[<-.data.frame`(`*tmp*`, alt.name, value = integer(0)) : 
>> le tableau de remplacement a 0 lignes, le tableau remplacé en a 26
>> 
>> 
>>> mul1.model<-mlogit(win~cteD+cteTh|0|0,data=h1.dat)
>> Error in mlogit(win ~ cteD + cteTh | 0 | 0, data = h1.dat) : 
>> object 'h1.dat' not found
>> 
>> 
>>> head(horse.data,27)
>>  raceid.nbChev.cteD.cteTh.win
>> 1              1;9;29.6;23.8;no
>> 2                1;9;5.3;6.7;no
>> 3              1;9;10.9;11.5;no
>> 4               1;9;8.2;6.7;yes
>> 5              1;9;17.8;18.2;no
>> 6                  1;9;26;30;no
>> 7                1;9;4.4;5.7;no
>> 8                  1;9;4.9;6;no
>> 9                1;9;4.5;6.9;no
>> 10            2;17;32.1;48.3;no
>> 11             2;17;8.8;24.5;no
>> 12            2;17;36.7;18.3;no
>> 13            2;17;6.7;11.8;yes
>> 14            2;17;10.3;12.8;no
>> 15            2;17;61.6;68.5;no
>> 16              2;17;2.5;6.7;no
>> 17            2;17;27.7;30.9;no
>> 18             2;17;8.4;10.5;no
>> 19            2;17;56.5;40.7;no
>> 20            2;17;95.5;11.9;no
>> 21             2;17;12.7;6.4;no
>> 22            2;17;19.6;14.2;no
>> 23           2;17;269.6;67.2;no
>> 24             2;17;300;75.6;no
>> 25            2;17;300;114.3;no
>> 26            2;17;36.3;16.9;no
>> 
>> ______________________________________________
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>> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
> 
> ______________________________________________
> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.

-- 
Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Office: A 4.23
Email: pd.mes at cbs.dk  Priv: PDalgd at gmail.com