Deprecate Array::length() and Sparse::length() in favour of ::numel(). * liboctave/array/Array.h (Array::length): deprecate for ::numel. * liboctave/array/Sparse.h (Sparse::length): deprecate for ::numel. * libgui/graphics/QtHandlesUtils.cc, libgui/src/octave-qt-link.cc, libinterp/corefcn/Cell.cc, libinterp/corefcn/__contourc__.cc, libinterp/corefcn/__pchip_deriv__.cc, libinterp/corefcn/__qp__.cc, libinterp/corefcn/cellfun.cc, libinterp/corefcn/daspk.cc, libinterp/corefcn/dasrt.cc, libinterp/corefcn/dassl.cc, libinterp/corefcn/data.cc, libinterp/corefcn/filter.cc, libinterp/corefcn/find.cc, libinterp/corefcn/gl-render.cc, libinterp/corefcn/gl-render.h, libinterp/corefcn/graphics.cc, libinterp/corefcn/graphics.in.h, libinterp/corefcn/help.cc, libinterp/corefcn/hex2num.cc, libinterp/corefcn/input.cc, libinterp/corefcn/load-path.cc, libinterp/corefcn/load-save.cc, libinterp/corefcn/ls-oct-ascii.h, libinterp/corefcn/lsode.cc, libinterp/corefcn/matrix_type.cc, libinterp/corefcn/oct-hist.cc, libinterp/corefcn/oct-map.cc, libinterp/corefcn/oct-map.h, libinterp/corefcn/oct-obj.h, libinterp/corefcn/oct-stream.cc, libinterp/corefcn/oct-stream.h, libinterp/corefcn/pr-output.cc, libinterp/corefcn/quadcc.cc, libinterp/corefcn/rand.cc, libinterp/corefcn/regexp.cc, libinterp/corefcn/strfns.cc, libinterp/corefcn/sub2ind.cc, libinterp/corefcn/symtab.h, libinterp/corefcn/syscalls.cc, libinterp/corefcn/tsearch.cc, libinterp/corefcn/urlwrite.cc, libinterp/corefcn/utils.cc, libinterp/corefcn/variables.cc, libinterp/corefcn/xdiv.cc, libinterp/corefcn/xpow.cc, libinterp/dldfcn/__glpk__.cc, libinterp/dldfcn/__init_fltk__.cc, libinterp/dldfcn/__magick_read__.cc, libinterp/dldfcn/audiodevinfo.cc, libinterp/dldfcn/ccolamd.cc, libinterp/dldfcn/colamd.cc, libinterp/octave-value/ov-cell.cc, libinterp/octave-value/ov-class.cc, libinterp/octave-value/ov-class.h, libinterp/octave-value/ov-fcn-inline.cc, libinterp/octave-value/ov-java.cc, libinterp/octave-value/ov-perm.cc, libinterp/octave-value/ov-struct.cc, libinterp/octave-value/ov-typeinfo.cc, libinterp/octave-value/ov.cc, libinterp/operators/op-int.h, libinterp/parse-tree/pt-pr-code.cc, liboctave/array/Array-util.cc, liboctave/array/Array.cc, liboctave/array/CColVector.cc, liboctave/array/CDiagMatrix.cc, liboctave/array/CMatrix.cc, liboctave/array/CRowVector.cc, liboctave/array/DiagArray2.cc, liboctave/array/DiagArray2.h, liboctave/array/MArray.cc, liboctave/array/PermMatrix.cc, liboctave/array/PermMatrix.h, liboctave/array/Sparse.cc, liboctave/array/boolMatrix.cc, liboctave/array/chMatrix.cc, liboctave/array/chNDArray.cc, liboctave/array/dColVector.cc, liboctave/array/dDiagMatrix.cc, liboctave/array/dMatrix.cc, liboctave/array/dRowVector.cc, liboctave/array/fCColVector.cc, liboctave/array/fCDiagMatrix.cc, liboctave/array/fCMatrix.cc, liboctave/array/fCRowVector.cc, liboctave/array/fColVector.cc, liboctave/array/fDiagMatrix.cc, liboctave/array/fMatrix.cc, liboctave/array/fRowVector.cc, liboctave/array/idx-vector.cc, liboctave/array/intNDArray.cc, liboctave/numeric/CmplxCHOL.cc, liboctave/numeric/CmplxLU.cc, liboctave/numeric/CmplxQR.cc, liboctave/numeric/DASPK.cc, liboctave/numeric/DASRT.cc, liboctave/numeric/DASSL.cc, liboctave/numeric/LSODE.cc, liboctave/numeric/ODES.cc, liboctave/numeric/ODES.h, liboctave/numeric/base-dae.h, liboctave/numeric/base-lu.cc, liboctave/numeric/dbleCHOL.cc, liboctave/numeric/dbleLU.cc, liboctave/numeric/dbleQR.cc, liboctave/numeric/eigs-base.cc, liboctave/numeric/fCmplxCHOL.cc, liboctave/numeric/fCmplxLU.cc, liboctave/numeric/fCmplxQR.cc, liboctave/numeric/floatCHOL.cc, liboctave/numeric/floatLU.cc, liboctave/numeric/floatQR.cc, liboctave/numeric/lo-specfun.cc, liboctave/numeric/oct-rand.cc, liboctave/numeric/oct-spparms.cc, liboctave/numeric/sparse-base-chol.cc, liboctave/operators/mx-inlines.cc, liboctave/system/file-ops.cc, liboctave/util/glob-match.h, liboctave/util/kpse.cc, liboctave/util/lo-regexp.cc, liboctave/util/oct-glob.cc, liboctave/util/pathsearch.cc, liboctave/util/str-vec.cc, liboctave/util/str-vec.h, liboctave/util/url-transfer.cc: replace all usage of Array::length() and Sparse::length() with ::numel().

--- a/libinterp/corefcn/graphics.cc
+++ b/libinterp/corefcn/graphics.cc
@@ -9566,7 +9566,7 @@
           fcn = c(0).function_value ();
           if (! error_state)
             {
-              for (int i = 1; i < c.length () ; i++)
+              for (int i = 1; i < c.numel () ; i++)
                 args(1+i) = c(i);
             }
         }
@@ -9865,7 +9865,7 @@
       if (! error_state)
         {
           // loop over graphics objects
-          for (octave_idx_type n = 0; n < hcv.length (); n++)
+          for (octave_idx_type n = 0; n < hcv.numel (); n++)
             gh_manager::get_object (hcv(n)).reset_default_properties ();
 
           if (! error_state)
@@ -10080,7 +10080,7 @@
           bool request_drawnow = false;
 
           // loop over graphics objects
-          for (octave_idx_type n = 0; n < hcv.length (); n++)
+          for (octave_idx_type n = 0; n < hcv.numel (); n++)
             {
               graphics_object obj = gh_manager::get_object (hcv(n));
 
@@ -10094,7 +10094,7 @@
                           obj.set (args(1).cellstr_value (),
                                    args(2).cell_value (), 0);
                         }
-                      else if (hcv.length () == args(2).cell_value ().rows ())
+                      else if (hcv.numel () == args(2).cell_value ().rows ())
                         {
                           obj.set (args(1).cellstr_value (),
                                    args(2).cell_value (), n);
@@ -10102,7 +10102,7 @@
                       else
                         {
                           error ("set: number of graphics handles must match number of value rows (%d != %d)",
-                                 hcv.length (), args(2).cell_value ().rows ());
+                                 hcv.numel (), args(2).cell_value ().rows ());
                           break;
 
                         }
@@ -10232,7 +10232,7 @@
 
       if (! error_state)
         {
-          octave_idx_type len = hcv.length ();
+          octave_idx_type len = hcv.numel ();
 
           if (nargin == 1 && len > 1)
             {
@@ -10396,7 +10396,7 @@
 
       if (! error_state)
         {
-          octave_idx_type len = hcv.length ();
+          octave_idx_type len = hcv.numel ();
 
           vals.resize (dim_vector (len, 1));
 
@@ -10630,7 +10630,7 @@
     {
       Matrix kids = go.get_properties ().get_children ();
 
-      for (octave_idx_type i = 0; i < kids.length (); i++)
+      for (octave_idx_type i = 0; i < kids.numel (); i++)
         {
           graphics_handle hnd = gh_manager::lookup (kids(i));
 
@@ -11197,7 +11197,7 @@
         {
           Matrix hlist = gh_manager::figure_handle_list (true);
 
-          for (int i = 0; ! error_state && i < hlist.length (); i++)
+          for (int i = 0; ! error_state && i < hlist.numel (); i++)
             {
               graphics_handle h = gh_manager::lookup (hlist(i));