maint: use rows() and columns() to clarify m-files. * gradient.m, interp1q.m, rat.m, tsearchn.m, image.m, imwrite.m, area.m, contourc.m, hist.m, isocolors.m, isonormals.m, meshz.m, print.m, __bar__.m, __go_draw_axes__.m, __interp_cube__.m, __marching_cube__.m, __patch__.m, __print_parse_opts__.m, __quiver__.m, rose.m, shrinkfaces.m, stairs.m, surfnorm.m, tetramesh.m, text.m, deconv.m, spline.m, intersect.m, setdiff.m, setxor.m, union.m, periodogram.m, pcg.m, perms.m: Replace size (x,1) with rows (x) and size(x,2) with columns(x).

--- a/scripts/plot/rose.m
+++ b/scripts/plot/rose.m
@@ -80,7 +80,7 @@
   x1 = xx(1:end-1) + diff (xx, 1) / 2;
   x1 = [x1 ; x1; x1; x1](:);
   th = [0; 0; x1; 2*pi ; 2*pi];
-  r = zeros (4 * size (nn, 1), size (nn, 2));
+  r = zeros (4 * rows (nn), columns (nn));
   r(2:4:end, :) = nn;
   r(3:4:end, :) = nn;