Don't use ifelse in plot fcns to avoid unnecessary fcn evaluations. * scripts/plot/area.m, scripts/plot/axis.m, scripts/plot/caxis.m, scripts/plot/comet.m, scripts/plot/comet3.m, scripts/plot/compass.m, scripts/plot/contour.m, scripts/plot/contour3.m, scripts/plot/contourf.m, scripts/plot/cylinder.m, scripts/plot/ellipsoid.m, scripts/plot/errorbar.m, scripts/plot/feather.m, scripts/plot/fill.m, scripts/plot/loglog.m, scripts/plot/loglogerr.m, scripts/plot/mesh.m, scripts/plot/meshc.m, scripts/plot/meshz.m, scripts/plot/pcolor.m, scripts/plot/pie.m, scripts/plot/pie3.m, scripts/plot/plot.m, scripts/plot/plot3.m, scripts/plot/polar.m, scripts/plot/private/__bar__.m, scripts/plot/private/__ezplot__.m, scripts/plot/private/__stem__.m, scripts/plot/quiver.m, scripts/plot/quiver3.m, scripts/plot/rectangle.m, scripts/plot/ribbon.m, scripts/plot/rose.m, scripts/plot/scatter.m, scripts/plot/scatter3.m, scripts/plot/semilogx.m, scripts/plot/semilogxerr.m, scripts/plot/semilogy.m, scripts/plot/semilogyerr.m, scripts/plot/slice.m, scripts/plot/sphere.m, scripts/plot/stairs.m, scripts/plot/surf.m, scripts/plot/surfc.m, scripts/plot/surfl.m, scripts/plot/surfnorm.m, scripts/time/datetick.m: Don't use ifelse in plot fcns to avoid unnecessary fcn evaluations.

--- a/scripts/plot/caxis.m
+++ b/scripts/plot/caxis.m
@@ -43,7 +43,10 @@
 
   [hax, varargin, nargin] = __plt_get_axis_arg__ ("caxis", varargin{:});
 
-  oldfig = ifelse (isempty (hax), [], get (0, "currentfigure"));
+  oldfig = [];
+  if (isempty (hax))
+    oldfig = get (0, "currentfigure");
+  endif
   unwind_protect
     if (isempty (hax))
       hax = gca ();