Don't pass axis handle unnecessarily from high level to low level plot functions. * scripts/plot/comet.m, scripts/plot/comet3.m, scripts/plot/compass.m, scripts/plot/contour.m, scripts/plot/contourf.m, scripts/plot/cylinder.m, scripts/plot/ellipsoid.m, scripts/plot/errorbar.m, scripts/plot/feather.m, scripts/plot/mesh.m, scripts/plot/meshc.m, scripts/plot/meshz.m, scripts/plot/pcolor.m, scripts/plot/plot3.m, scripts/plot/rectangle.m, scripts/plot/rose.m, scripts/plot/scatter3.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/surfnorm.m, scripts/plot/trimesh.m, scripts/plot/trisurf.m: Don't pass hax to lower level functions after newplot() has been called.

--- a/scripts/plot/trimesh.m
+++ b/scripts/plot/trimesh.m
@@ -59,13 +59,13 @@
   elseif (ischar (z))
     triplot (tri, x, y, z, varargin{:});
   else
-    newplot ();
+    hax = newplot ();
     handle = patch ("Vertices", [x(:), y(:), z(:)], "Faces", tri,
                     "FaceColor", "none", "EdgeColor", __next_line_color__ (),
                     varargin{:});
     if (! ishold ())
-      set (gca (), "view", [-37.5, 30],
-           "xgrid", "on", "ygrid", "on", "zgrid", "on");
+      set (hax, "view", [-37.5, 30],
+                "xgrid", "on", "ygrid", "on", "zgrid", "on");
     endif
     if (nargout > 0)
       h = handle;