X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Flanguage%2Fstats%2Ffactor.c;h=d50d6ad3fdf2c5b6eb6c86bbbe3e3044a893f4ac;hb=547d9160972dc6e986e1b4b1f29517f9c072410a;hp=1043173bfeab6d50b082403e40906a483238d844;hpb=f550aee00a62fe1d8baf62d83cd7efef6cc2ee92;p=pspp

diff --git a/src/language/stats/factor.c b/src/language/stats/factor.c
index 1043173bfe..d50d6ad3fd 100644
--- a/src/language/stats/factor.c
+++ b/src/language/stats/factor.c
@@ -211,6 +211,7 @@ idata_free (struct idata *id)
 }
 
 
+#if 0
 static void
 dump_matrix (const gsl_matrix *m)
 {
@@ -249,6 +250,7 @@ dump_vector (const gsl_vector *v)
     }
   printf ("\n");
 }
+#endif
 
 
 static int 
@@ -1692,6 +1694,12 @@ do_factor (const struct cmd_factor *factor, struct casereader *r)
 
   idata->cov = covariance_calculate (cov);
 
+  if (idata->cov == NULL)
+    {
+      msg (MW, _("The dataset contains no complete observations. No analysis will be performed."));
+      goto finish;
+    }
+
   var_matrix = covariance_moments (cov, MOMENT_VARIANCE);
   mean_matrix = covariance_moments (cov, MOMENT_MEAN);
   idata->n = covariance_moments (cov, MOMENT_NONE);