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Revision 9 as of 2010-01-25 12:33:29

location: FAQ / lines

How do I do a multiple line plot of cluster profiles?

Suppose we gave four columns of factor scores, f1av to f4av, which we wish plot for each of two clusters, cluster membership forming a sixth column, as in the table below. [attachment:lines.doc A bit of editing in the chart editor yields this.]

F1av

F2av

F3av

F4av

clus

1

2

2

2

1

2

5

1

4

1

3

4

3

5

2

2

3

4

6

2

A multiple line plot can be drawn using the syntax below. 

VARSTOCASES                                          
/MAKE score FROM f1av TO f4av.                        
LIST.

compute facno=$casenum.
compute facno=mod(facno,4).
if(facno eq 0) facno=4.
exe.


GRAPH
  /title = 'cluster profiles of four factors'
  /LINE(MULTIPLE)MEAN(score) BY facno BY clus
  /MISSING=REPORT.