IPMATRIX= constructs a rectangular matrix in which there is one row for each person and one column for each item, or vice-versa. The entries in the matrix are selected from the following screen:
The first rows and columns can be the entry numbers, measures, labels and/or fields from the labels.
The matrix contents are selected from the "Select the field you want" pull-down menu (red arrow above). The identifying numbers in the drop-down list are those for XFILE=.
The "Person Label field" and "Item Label field" boxes enable you to select columns from the person and item labels to use as demographics. These can be typed in or chosen from the pull-down menu.
Depending on CSV=, data values are separated by "tab" or comma characters. In fixed field format, all fields are 7 characters long, separated by a blank. Missing data codes are "." as standard, but can be any character, or nothing.
When IPMATRIX=filename.txt is included in a control file, the default options are used. These can be changed with the "Make default" button.
a) in a standard run of Winsteps:
First do IPMATRIX= from the Output Files menu.
"Set as default" the settings you want.
b) Then you can IPMATRIX=response.csv in your control file or batch file.
use CSV= in your control file for the separators in the .csv file: CSV=, or CSV=Tab
Example:
