R help - Sep 2013 - panel multinomial logit

Hi there,
I am trying to apply multinomial Logit for a panel data set. I have 5016
observations for 22 countries (id). Each country has 228 observations over
time domain.
Following table shows the part of my dataset including 10 variables.
      id  t     X1    X2    X3        X4    X5      X6         X7       X8  
X9      X10
500  3 44   NA     NA   NA       NA    NA 150.9211       NA      NA   NA
0.005684
501  3 45   NA     NA   NA       NA    NA 153.6307 0.409641   NA   NA
0.006196
502  3 46   NA     NA   NA       NA    NA 156.1034 0.422223   NA   NA
0.006666
503  3 47   NA     NA   NA       NA    NA 157.7336 0.541157   NA   NA
0.007110
504  3 48   NA     NA   NA       NA    NA 163.7610 0.717920   NA   NA
0.007533
505  3 49   NA     NA   NA       NA    NA 151.5358 0.727861   NA   NA
0.007580
506  3 50   NA     NA   NA       NA    NA 151.9387 0.842376   NA   NA
0.008198
I have generated a dependent variable with 3 states which are 0, 1, 2.
      id  t    y
500  3 44   1
501  3 45   2
502  3 46   0
503  3 47   0
504  3 48   0  
505  3 49   0
506  3 50   1
In order to reshape data from wide to long format I used the command below;
mdat <- mlogit.data (dat, id="id", choice="y", shape =
"long",  alt.levels c("0",
"1","2"))
> mdat[500:510,]
         id  t    X1     X2    X3       X4    X5      X6         X7       
X8  X9      
167.1  3 44   NA     NA   NA       NA    NA 150.9211       NA      NA   NA
167.2  3 45   NA     NA   NA       NA    NA 153.6307 0.409641   NA   NA
168.0  3 46   NA     NA   NA       NA    NA 156.1034 0.422223   NA   NA
168.1  3 47   NA     NA   NA       NA    NA 157.7336 0.541157   NA   NA
168.2  3 48   NA     NA   NA       NA    NA 163.7610 0.717920   NA   NA
169.0  3 49   NA     NA   NA       NA    NA 151.5358 0.727861   NA   NA
169.1  3 50   NA     NA   NA       NA    NA 151.9387 0.842376   NA   NA
             X10         y
167.1 0.005684   TRUE
167.2 0.006196   TRUE
168.0 0.006666   FALSE
168.1 0.007110   FALSE
168.2 0.007533   FALSE
169.0 0.007580   FALSE
169.1 0.008198   TRUE
This code has not given /chid/ or /alt/ columns in the result. These two
columns usually appear when you run the command for reshape the data format.
The problem in here is when I check y it shows True and False. I think it
ignores the other state that I defined for y it just shows 2 states! I am
confused. I don?t know whether the code which I have used for reshaping is
correct?
The main struggle is when I run the mlogit command. I have tried two
commands:
First;
> mlogit.model <- mlogit(y~ X1 + X2 +X3 + X4 + X5 + X6 + X7 + X8 + X9 +
X10,
> data = mdat, reflevel = "0")
I got following error;
Error in if (abs(x - oldx) < ftol) { : 
  missing value where TRUE/FALSE needed
Second;
mlogit.model <- mlogit(y~ X1 + X2 +X3 + X4 + X5 + X6 + X7 + X8 + X9 + X10,
data = mdat, reflevel = "0",  R=50, halton=NA, print.level=0,
panel=TRUE)
 Error in mlogit(y ~ X1 + X2 +X3 + X4 + X5 + X6 + X7 + X8 + X9 + X10 +  : 
  panel is only relevant for mixed logit models.
Now, I would like to know if the mlogit.dat is correct or not? Secondly, how
could I make correct the mlogit command.

Any help would be appreciated in advance.

Best,
Rose 




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I am just testing the possibility of using grep under for loop:
>for(i in 1:10){grep("a",letters)}

nothing came out;

when I ran: 

>grep("a",letters), 

I got "1"

so in my for loop, I expected to see ten "1"s, but I did not.

Could anybody help me to figure out why? Thanks a lot for your help.

Capricy
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