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Realcom assumes that the data is tab delimited and that the first three lines don't have extra tabs. If you are familiar with Matlab the data is read in as follows:


[a]=importdata(Inputfile, '\t', 4);
eval(['c_nimpute=' a.textdata{1}]);
eval(['c_naux=' a.textdata{2}]);
eval(['c_vartype=[' a ...

I am not sure why it would only apply the change to one variable, it's possible that there is a bug. Could you check whether it works okay if you replace the 9999 values with the default missing value before importing the data?

In that case I think that we will need to see an example of the files that you have having trouble with. If you could send this to Professor Goldstein (contact details here: http://www.bris.ac.uk/cmm/team/hg/) then he should be able to check this next week.

Like MLwiN, Realcom-Impute determines the number of level-2 units by the number of times that the code changes within the ID variable. This means that the data will need to be sorted by this ID before importing it. If it isn't sorted then you will see more units than you expect, so this may explain ...

If you have access to Stata then you will probably find it easiest to use the realcom-impute Stata package (see http://missingdata.lshtm.ac.uk/index.php?option=com_content&view=article&id=50&Itemid=102 ).

If not then you will need to generate an input (text) file that matches the specification ...

There may be better ways to do this, but here is one way that I believe you can achieve what you want (This assumes c100 to c103 are free in your worksheet, if not then substitute columns that are):

1) Create a zero/one variable indicating whether the record has the required characteristic. This ...

Would it be possible for you to send the files that you are having problems with to Professor Goldstein (contact details here: http://www.bris.ac.uk/cmm/team/hg/) and he will try to determine what the problem is?

The number of cases displayed in the equations window (and the hierarchy viewer) is based on the data currently loaded into memory. During the imputation analysis run this is replaced by each of your imputed datasets and the combined results are put into C1096...C1099 so that they appear in the ...

Assuming that the values of the variable are integer and that the categories are only defined once each (you can check this with the view categories button in the names window) then this sounds like a bug. Would it be possible for you to send me some example data, along with information on the ...

Are you using the most recent version of MLwiN? The tabulate command was originally written for mln, which was a text based application limited to 80 columns of text per line. Because of this any output which was longer than this had to be wrapped around onto the line below. This should have been ...