From: John Darrington <john@darrington.wattle.id.au>
Date: Mon, 28 Dec 2009 10:45:26 +0000 (+0100)
Subject: FACTOR: Check that the number of factors does not exceed the number of variables
X-Git-Tag: fc11-i386-build68~1
X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?p=pspp-builds.git;a=commitdiff_plain;h=9e01a02f3eb20eed09edc144bb579f2768e18ea4

FACTOR: Check that the number of factors does not exceed the number of variables
---

diff --git a/src/language/stats/factor.c b/src/language/stats/factor.c
index 72a06640..cfec4a9a 100644
--- a/src/language/stats/factor.c
+++ b/src/language/stats/factor.c
@@ -1467,6 +1467,12 @@ do_factor (const struct cmd_factor *factor, struct casereader *r)
       msg (MW, _("The FACTOR criteria result in zero factors extracted. Therefore no analysis will be performed."));
       goto finish;
     }
+
+  if (idata->n_extractions > factor->n_vars)
+    {
+      msg (MW, _("The FACTOR criteria result in more factors than variables, which is not meaningful. No analysis will be performed."));
+      goto finish;
+    }
     
   {
     const gsl_vector *extracted_eigenvalues = NULL;