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changeset 17023:13a12d01aca5

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Avoid tight limits having a span of zero. script/plot/axis.m: For the "tight" option, avoid a span of zero. (Bug # 39429)
author bpabbott
date Sat, 20 Jul 2013 10:56:24 -0400
parents ddc62f0c7a35
children c358c6e7416b
files scripts/plot/axis.m
diffstat 1 files changed, 20 insertions(+), 5 deletions(-) [+]
line wrap: on
line diff
--- a/scripts/plot/axis.m
+++ b/scripts/plot/axis.m
@@ -344,16 +344,31 @@
 
 function __do_tight_option__ (ca)
 
-  set (ca,
-       "xlim", __get_tight_lims__ (ca, "x"),
-       "ylim", __get_tight_lims__ (ca, "y"));
+  xlim = __get_tight_lims__ (ca, "x");
+  if (all (xlim == 0))
+    xlim = eps () * [-1 1];
+  elseif (diff (xlim == 0))
+    xlim = xlim .* (1 + eps () * [-1, 1]);
+  endif
+  ylim = __get_tight_lims__ (ca, "y");
+  if (all (ylim == 0))
+    ylim = eps () * [-1 1];
+  elseif (diff (ylim == 0))
+    ylim = ylim .* (1 + eps () * [-1, 1]);
+  endif
+  set (ca, "xlim", xlim, "ylim", ylim)
   if (__calc_dimensions__ (ca) > 2)
-    set (ca, "zlim", __get_tight_lims__ (ca, "z"));
+    zlim = __get_tight_lims__ (ca, "z");
+    if (all (zlim == 0))
+      zlim = eps () * [-1 1];
+    elseif (diff (zlim == 0))
+      zlim = zlim .* (1 + eps () * [-1, 1]);
+    endif
+    set (ca, "zlim", zlim);
   endif
 
 endfunction
 
-
 %!demo
 %! clf;
 %! t = 0:0.01:2*pi;