X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Flanguage%2Fstats%2Ffactor.c;h=93358373df3eee57684e7d0abdcdefd7f050662c;hb=a258e53c63a08b0ec48aea8f03808eb651729424;hp=a2a8e5df037a15f0a67361d079002d7f70bc33e7;hpb=5f68c60b8283f6a410de20f927e9b12792ea58b3;p=pspp

diff --git a/src/language/stats/factor.c b/src/language/stats/factor.c
index a2a8e5df03..93358373df 100644
--- a/src/language/stats/factor.c
+++ b/src/language/stats/factor.c
@@ -1631,7 +1631,7 @@ show_correlation_matrix (const struct cmd_factor *factor, const struct idata *id
       if (factor->print & PRINT_SIG)
 	{
 	  const double y = heading_rows + y_pos_sig * factor->n_vars;
-	  tab_text (t, 0, y, TAT_TITLE, _("Sig. 1-tailed"));
+	  tab_text (t, 0, y, TAT_TITLE, _("Sig. (1-tailed)"));
 
 	  for (i = 0; i < factor->n_vars; ++i)
 	    {
@@ -1694,6 +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);