agree Agreement chart for n x n table agree

Visualizing Categorical Data: agree

$Version: 1.1 (12 Jan 1998)
Michael Friendly
York University

The agree program ( [download] get agree.sas)

Agreement chart for n x n table

The AGREE program is a collection of SAS/IML modules for preparing observer agreement charts which portray the agreement between two raters.

Usage

The modules are typically loaded into the SAS/IML workspace with the %include statement. The required input parameters are specified with IML statements, and the AGREE module is called as follows, 
  proc iml;
     %include 'path/to/agree.sas';
     *-- set global variables, if desired;     
     font = 'hwpsl009';

     *-- data, labels, title, weights;
     freq = { ... };
     vnames = {...};
     lnames = {...};
     title  = '...';
     w = 1;         *-- diagonals only;
     run agree(freq, w, vnames, lnames, title);

Parameters

The required parameters for the RUN AGREE statement are:
table
A square numeric matrix containing the contingency table to be analyzed.
weight
A vector of one or more weights used to give ``partial credit'' for disagreements by one or more categories. To ignore all but exact agreements, let weight=1. To take into account agreements one-step apart (with a weight of 5/6), let weight={1 5/6}.
vnames
A character vector of two elements, containing the names of the row and column variables.
lnames
A character vector containing the names of the row and column categories. If table is n x n, then lnames should contain n elements.
title
A character string containing the title for the plot.

Global input variables

The program uses two global variables to determine the font and character height for text in the agreement chart.
font
A character string specifying the font used. The default is Helvetica ('hwpsl009') if a PostScript driver is being used, SWISS otherwise.
htext
A numeric value specifying the height of text characters.

Example

proc iml;
   %include iml(agree);
   table =
     {  7     7     2      3,
        2     8     3      7,
        1     5     4      9,
        2     8     9     14 };
   title  = "Agreement Chart: Husband's and Wife's Sexual Fun";
   vnames = {"Husband's Rating" "Wife's rating"};
   lnames = {'Never fun' 'Fairly Often' 'Very Often' 'Always fun'} ;
   font = 'hwpsl009';
   
   w=1;
   run agree(table, w, vnames, lnames, title);
   w = w || (8/9);
   run agree(table, w, vnames, lnames, title);
quit;

See also

mosaic Macro interface for mosaic displays
sieve Sieve diagrams for two-way tables
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