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ensemble_check_compqid

PURPOSE ^

Checks to see if the data structure has a composite question ID variable.

SYNOPSIS ^

function data_st = ensemble_check_compqid(data_st)

DESCRIPTION ^

 Checks to see if the data structure has a composite question ID variable.

 If it has none, it checks to see if there are question_id and subquestion
 variables from which to construct a compqid variable, and proceeds to do so if
 these are available. Otherwise, the function returns empty.

 data_st = ensemble_check_compqid(data_st);

CROSS-REFERENCE INFORMATION ^

This function calls: This function is called by:

SOURCE CODE ^

0001 function data_st = ensemble_check_compqid(data_st)
0002 % Checks to see if the data structure has a composite question ID variable.
0003 %
0004 % If it has none, it checks to see if there are question_id and subquestion
0005 % variables from which to construct a compqid variable, and proceeds to do so if
0006 % these are available. Otherwise, the function returns empty.
0007 %
0008 % data_st = ensemble_check_compqid(data_st);
0009 %
0010 
0011 % 02/06/07 Petr Janata
0012 
0013 col = set_var_col_const(data_st.vars); % set the column constants
0014 
0015 if isfield(col,'compqid')
0016   return % nothing to construct, so return what we received
0017 end
0018 
0019 if ~isfield(col,'compqid') && ~all(isfield(col,{'question_id','subquestion'}))
0020   fprintf(['%s: Did not find necessary question and subquestion or composite question ID' ...
0021     ' information in the input data'], mfilename);
0022   data_st = [];
0023   return
0024 end
0025 
0026 % Build the compqid variable if necessary
0027 data_st.vars{end+1} = 'compqid';
0028 data_st.data{end+1} = make_compqid(data_st.data{col.question_id}, ...
0029     data_st.data{col.subquestion});
0030   
0031 end

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