a data frame of dimension (p,2j),
where p represents the number of products and j the number
of panelists
numr
the number of tableclothe per row (by default 2)
numc
the number of tableclothe per column (by default 2)
color
the color used to display the products
lim
the size of the tableclothe
Value
Returns as many graphs as there are panelists, each graph represents products
positioned by a given panelist on a tablecloth
Details
The data used here refer to a specific experiment, where panelists are
asked to position products on a tableclothe of dimension lim, by default (60,40).
References
Pages J. (2005). Collection and analysis of perceived product inter-distances using multiple factor analysis;
application to the study of ten white wines from the Loire Valley. Food Quality and Preference. 16 (7) pp. 642-649.