# HG changeset patch
# User Kai Habel <kai.habel@gmx.de>
# Date 1317292299 -7200
# Node ID e36c2f4ea8f554771386c04228af81071681ca73
# Parent  0c69a564f2beb9b417cdb7da61335275b6cf819a
Set clim correctly for patch objects:

src/graphics.cc: (update_axis_limits): set min_val correctly.
scripts/plot/patch.m: test for this fix.

diff --git a/scripts/plot/patch.m b/scripts/plot/patch.m
--- a/scripts/plot/patch.m
+++ b/scripts/plot/patch.m
@@ -172,3 +172,15 @@
 %! unwind_protect_cleanup
 %!   close (hf);
 %! end_unwind_protect
+
+%!test
+%! hf = figure ("visible", "off");
+%! c = 0.9;
+%! unwind_protect
+%!   h = patch ([0 1 0], [0 1 1], c);
+%!   assert (get (gca, "clim"), [c - 1, c + 1]);
+%!   h = patch ([0 1 0], [0 1 1], 2 * c);
+%!   assert (get (gca, "clim"), [c, 2 * c]);
+%! unwind_protect_cleanup
+%!   close (hf);
+%! end_unwind_protect
\ No newline at end of file
diff --git a/src/graphics.cc b/src/graphics.cc
--- a/src/graphics.cc
+++ b/src/graphics.cc
@@ -5668,7 +5668,10 @@
               max_val = 1;
             }
           else if (min_val == max_val)
-            max_val = min_val + 1;
+            {
+              max_val = min_val + 1;
+              min_val -= 1;
+            }
 
           limits.resize (1, 2);
 
@@ -5829,7 +5832,10 @@
               max_val = 1;
             }
           else if (min_val == max_val)
-            max_val = min_val + 1;
+            {
+              max_val = min_val + 1;
+              min_val -= 1;
+            }
 
           limits.resize (1, 2);