Mercurial > octave-nkf
view scripts/plot/draw/private/__contour__.m @ 19627:446c46af4b42 stable
strip trailing whitespace from most source files
* Makefile.am, NEWS, build-aux/common.mk, configure.ac,
doc/Makefile.am, doc/doxyhtml/Makefile.am,
doc/interpreter/Makefile.am, doc/interpreter/arith.txi,
doc/interpreter/audio.txi, doc/interpreter/basics.txi,
doc/interpreter/bugs.txi, doc/interpreter/container.txi,
doc/interpreter/cp-idx.txi, doc/interpreter/data.txi,
doc/interpreter/debug.txi, doc/interpreter/diagperm.txi,
doc/interpreter/diffeq.txi, doc/interpreter/doccheck/README,
doc/interpreter/doccheck/spellcheck, doc/interpreter/emacs.txi,
doc/interpreter/errors.txi, doc/interpreter/eval.txi,
doc/interpreter/expr.txi, doc/interpreter/external.txi,
doc/interpreter/fn-idx.txi, doc/interpreter/func.txi,
doc/interpreter/geometry.txi, doc/interpreter/geometryimages.m,
doc/interpreter/gpl.txi, doc/interpreter/grammar.txi,
doc/interpreter/gui.txi, doc/interpreter/image.txi,
doc/interpreter/install.txi, doc/interpreter/interp.txi,
doc/interpreter/interpimages.m, doc/interpreter/intro.txi,
doc/interpreter/io.txi, doc/interpreter/java.txi,
doc/interpreter/linalg.txi, doc/interpreter/macros.texi,
doc/interpreter/matrix.txi, doc/interpreter/munge-texi.pl,
doc/interpreter/nonlin.txi, doc/interpreter/numbers.txi,
doc/interpreter/obsolete.txi, doc/interpreter/octave-config.1,
doc/interpreter/octave.texi, doc/interpreter/oop.txi,
doc/interpreter/op-idx.txi, doc/interpreter/optim.txi,
doc/interpreter/package.txi, doc/interpreter/plot.txi,
doc/interpreter/poly.txi, doc/interpreter/preface.txi,
doc/interpreter/quad.txi, doc/interpreter/set.txi,
doc/interpreter/signal.txi, doc/interpreter/sparse.txi,
doc/interpreter/sparseimages.m, doc/interpreter/splineimages.m,
doc/interpreter/stats.txi, doc/interpreter/stmt.txi,
doc/interpreter/strings.txi, doc/interpreter/system.txi,
doc/interpreter/testfun.txi, doc/interpreter/tips.txi,
doc/interpreter/var.txi, doc/interpreter/vectorize.txi,
doc/liboctave/Makefile.am, doc/liboctave/array.texi,
doc/liboctave/bugs.texi, doc/liboctave/cp-idx.texi,
doc/liboctave/dae.texi, doc/liboctave/diffeq.texi,
doc/liboctave/error.texi, doc/liboctave/factor.texi,
doc/liboctave/fn-idx.texi, doc/liboctave/gpl.texi,
doc/liboctave/install.texi, doc/liboctave/intro.texi,
doc/liboctave/liboctave.texi, doc/liboctave/matvec.texi,
doc/liboctave/nleqn.texi, doc/liboctave/nlfunc.texi,
doc/liboctave/ode.texi, doc/liboctave/optim.texi,
doc/liboctave/preface.texi, doc/liboctave/quad.texi,
doc/liboctave/range.texi, doc/refcard/Makefile.am,
doc/refcard/refcard.tex, etc/HACKING, etc/NEWS.1, etc/NEWS.2,
etc/NEWS.3, etc/OLD-ChangeLogs/ChangeLog,
etc/OLD-ChangeLogs/doc-ChangeLog,
etc/OLD-ChangeLogs/scripts-ChangeLog,
etc/OLD-ChangeLogs/src-ChangeLog, etc/OLD-ChangeLogs/test-ChangeLog,
etc/PROJECTS, etc/README.Cygwin, etc/README.MacOS, etc/README.MinGW,
etc/README.gnuplot, etc/gdbinit, etc/icons/Makefile.am,
examples/@polynomial/end.m, examples/@polynomial/subsasgn.m,
examples/Makefile.am, examples/standalonebuiltin.cc,
libgui/Makefile.am, libgui/qterminal/libqterminal/README,
libgui/qterminal/libqterminal/unix/BlockArray.cpp,
libgui/qterminal/libqterminal/unix/BlockArray.h,
libgui/qterminal/libqterminal/unix/Character.h,
libgui/qterminal/libqterminal/unix/CharacterColor.h,
libgui/qterminal/libqterminal/unix/Emulation.cpp,
libgui/qterminal/libqterminal/unix/Emulation.h,
libgui/qterminal/libqterminal/unix/Filter.cpp,
libgui/qterminal/libqterminal/unix/Filter.h,
libgui/qterminal/libqterminal/unix/History.cpp,
libgui/qterminal/libqterminal/unix/History.h,
libgui/qterminal/libqterminal/unix/KeyboardTranslator.cpp,
libgui/qterminal/libqterminal/unix/KeyboardTranslator.h,
libgui/qterminal/libqterminal/unix/LineFont.h,
libgui/qterminal/libqterminal/unix/QUnixTerminalImpl.cpp,
libgui/qterminal/libqterminal/unix/QUnixTerminalImpl.h,
libgui/qterminal/libqterminal/unix/Screen.cpp,
libgui/qterminal/libqterminal/unix/Screen.h,
libgui/qterminal/libqterminal/unix/ScreenWindow.cpp,
libgui/qterminal/libqterminal/unix/ScreenWindow.h,
libgui/qterminal/libqterminal/unix/TerminalCharacterDecoder.cpp,
libgui/qterminal/libqterminal/unix/TerminalCharacterDecoder.h,
libgui/qterminal/libqterminal/unix/Vt102Emulation.h,
libgui/qterminal/libqterminal/win32/QWinTerminalImpl.cpp,
libgui/qterminal/qterminal/main.cpp,
libgui/src/m-editor/file-editor-tab.cc, libgui/src/octave-gui.cc,
libgui/src/octave-qt-link.cc, libinterp/corefcn/data.cc,
libinterp/corefcn/defun-int.h, libinterp/corefcn/det.cc,
libinterp/corefcn/gl2ps-renderer.cc, libinterp/corefcn/graphics.cc,
libinterp/corefcn/graphics.in.h, libinterp/corefcn/ls-mat5.cc,
libinterp/corefcn/lu.cc, libinterp/corefcn/oct-tex-parser.yy,
libinterp/corefcn/oct-tex-symbols.in, libinterp/corefcn/quadcc.cc,
libinterp/corefcn/zfstream.cc, libinterp/dldfcn/__eigs__.cc,
libinterp/dldfcn/__voronoi__.cc, libinterp/gendoc.pl,
libinterp/genprops.awk, libinterp/mk-errno-list, libinterp/mk-pkg-add,
libinterp/mkbuiltins, libinterp/mkdefs, libinterp/mkdocs,
libinterp/mkops, libinterp/octave-value/ov-java.cc,
libinterp/parse-tree/lex.ll, libinterp/parse-tree/oct-parse.in.yy,
libinterp/parse-tree/octave.gperf, liboctave/Makefile.am,
liboctave/array/Array.cc, liboctave/array/module.mk,
liboctave/cruft/daspk/datv.f, liboctave/cruft/daspk/dcnst0.f,
liboctave/cruft/daspk/dcnstr.f, liboctave/cruft/daspk/ddasic.f,
liboctave/cruft/daspk/ddasid.f, liboctave/cruft/daspk/ddasik.f,
liboctave/cruft/daspk/ddaspk.f, liboctave/cruft/daspk/ddstp.f,
liboctave/cruft/daspk/ddwnrm.f, liboctave/cruft/daspk/dfnrmd.f,
liboctave/cruft/daspk/dfnrmk.f, liboctave/cruft/daspk/dhels.f,
liboctave/cruft/daspk/dheqr.f, liboctave/cruft/daspk/dinvwt.f,
liboctave/cruft/daspk/dlinsd.f, liboctave/cruft/daspk/dlinsk.f,
liboctave/cruft/daspk/dmatd.f, liboctave/cruft/daspk/dnedd.f,
liboctave/cruft/daspk/dnedk.f, liboctave/cruft/daspk/dnsd.f,
liboctave/cruft/daspk/dnsid.f, liboctave/cruft/daspk/dnsik.f,
liboctave/cruft/daspk/dnsk.f, liboctave/cruft/daspk/dorth.f,
liboctave/cruft/daspk/dslvd.f, liboctave/cruft/daspk/dslvk.f,
liboctave/cruft/daspk/dspigm.f, liboctave/cruft/daspk/dyypnw.f,
liboctave/cruft/dasrt/ddasrt.f, liboctave/cruft/dasrt/drchek.f,
liboctave/cruft/dassl/ddaslv.f, liboctave/cruft/dassl/ddassl.f,
liboctave/cruft/misc/blaswrap.c, liboctave/cruft/misc/module.mk,
liboctave/cruft/odepack/cfode.f, liboctave/cruft/odepack/dlsode.f,
liboctave/cruft/odepack/ewset.f, liboctave/cruft/odepack/intdy.f,
liboctave/cruft/odepack/prepj.f, liboctave/cruft/odepack/sintdy.f,
liboctave/cruft/odepack/slsode.f, liboctave/cruft/odepack/solsy.f,
liboctave/cruft/odepack/ssolsy.f, liboctave/cruft/odepack/stode.f,
liboctave/cruft/odepack/vnorm.f, liboctave/cruft/ranlib/Basegen.doc,
liboctave/cruft/ranlib/README, liboctave/cruft/ranlib/genbet.f,
liboctave/cruft/ranlib/genexp.f, liboctave/cruft/ranlib/gennch.f,
liboctave/cruft/ranlib/gennf.f, liboctave/cruft/ranlib/gennor.f,
liboctave/cruft/ranlib/getsd.f, liboctave/cruft/ranlib/initgn.f,
liboctave/cruft/ranlib/phrtsd.f, liboctave/cruft/ranlib/randlib.fdoc,
liboctave/cruft/ranlib/setsd.f, liboctave/cruft/ranlib/tstgmn.for,
liboctave/cruft/ranlib/tstmid.for, liboctave/cruft/slatec-fn/atanh.f,
liboctave/cruft/slatec-fn/datanh.f,
liboctave/cruft/slatec-fn/xgmainc.f,
liboctave/cruft/slatec-fn/xsgmainc.f, liboctave/numeric/module.mk,
liboctave/operators/mk-ops.awk, liboctave/operators/mx-ops,
liboctave/operators/sparse-mk-ops.awk,
liboctave/operators/sparse-mx-ops, liboctave/operators/vx-ops,
liboctave/util/module.mk, run-octave.in, scripts/@ftp/ftp.m,
scripts/audio/wavread.m, scripts/deprecated/java_convert_matrix.m,
scripts/deprecated/java_debug.m, scripts/deprecated/java_invoke.m,
scripts/deprecated/java_new.m,
scripts/deprecated/java_unsigned_conversion.m,
scripts/deprecated/javafields.m, scripts/deprecated/javamethods.m,
scripts/deprecated/shell_cmd.m, scripts/general/accumarray.m,
scripts/general/display.m, scripts/general/fieldnames.m,
scripts/general/interp1.m, scripts/general/interp2.m,
scripts/general/interp3.m, scripts/general/isa.m,
scripts/general/methods.m, scripts/general/sortrows.m,
scripts/geometry/convhull.m, scripts/geometry/delaunay.m,
scripts/geometry/delaunay3.m, scripts/geometry/delaunayn.m,
scripts/geometry/griddata.m, scripts/geometry/griddatan.m,
scripts/geometry/voronoi.m, scripts/geometry/voronoin.m,
scripts/gui/guihandles.m, scripts/gui/inputdlg.m,
scripts/gui/listdlg.m, scripts/gui/msgbox.m, scripts/gui/questdlg.m,
scripts/gui/uigetfile.m, scripts/gui/waitbar.m, scripts/gui/warndlg.m,
scripts/help/doc.m, scripts/help/help.m, scripts/help/type.m,
scripts/image/bone.m, scripts/image/cmpermute.m,
scripts/image/cmunique.m, scripts/image/colorcube.m,
scripts/image/colormap.m, scripts/image/contrast.m,
scripts/image/gray2ind.m, scripts/image/image.m,
scripts/image/imshow.m, scripts/image/ind2gray.m, scripts/image/jet.m,
scripts/image/rgb2ntsc.m, scripts/image/spinmap.m,
scripts/io/importdata.m, scripts/io/strread.m, scripts/io/textread.m,
scripts/io/textscan.m, scripts/java/java_get.m,
scripts/java/java_set.m, scripts/java/javaaddpath.m,
scripts/java/javaclasspath.m, scripts/java/javamem.m,
scripts/linear-algebra/linsolve.m, scripts/linear-algebra/qzhess.m,
scripts/miscellaneous/debug.m, scripts/miscellaneous/desktop.m,
scripts/miscellaneous/dir.m, scripts/miscellaneous/dos.m,
scripts/miscellaneous/edit.m, scripts/miscellaneous/fact.m,
scripts/miscellaneous/getappdata.m, scripts/miscellaneous/inputname.m,
scripts/miscellaneous/license.m, scripts/miscellaneous/ls_command.m,
scripts/miscellaneous/run.m, scripts/miscellaneous/setfield.m,
scripts/miscellaneous/unix.m, scripts/miscellaneous/ver.m,
scripts/mk-pkg-add, scripts/mkdoc.pl,
scripts/optimization/fminsearch.m, scripts/optimization/optimset.m,
scripts/optimization/sqp.m, scripts/pkg/pkg.m,
scripts/pkg/private/create_pkgadddel.m,
scripts/pkg/private/fix_depends.m, scripts/pkg/private/install.m,
scripts/plot/appearance/axis.m, scripts/plot/appearance/box.m,
scripts/plot/appearance/clabel.m, scripts/plot/appearance/daspect.m,
scripts/plot/appearance/datetick.m, scripts/plot/appearance/grid.m,
scripts/plot/appearance/legend.m, scripts/plot/appearance/orient.m,
scripts/plot/appearance/shading.m, scripts/plot/appearance/text.m,
scripts/plot/appearance/title.m, scripts/plot/appearance/xlabel.m,
scripts/plot/appearance/ylabel.m, scripts/plot/appearance/zlabel.m,
scripts/plot/draw/area.m, scripts/plot/draw/bar.m,
scripts/plot/draw/barh.m, scripts/plot/draw/colorbar.m,
scripts/plot/draw/contour.m, scripts/plot/draw/contour3.m,
scripts/plot/draw/contourf.m, scripts/plot/draw/ellipsoid.m,
scripts/plot/draw/errorbar.m, scripts/plot/draw/ezcontour.m,
scripts/plot/draw/ezcontourf.m, scripts/plot/draw/ezmesh.m,
scripts/plot/draw/ezpolar.m, scripts/plot/draw/fill.m,
scripts/plot/draw/fplot.m, scripts/plot/draw/hist.m,
scripts/plot/draw/meshc.m, scripts/plot/draw/meshz.m,
scripts/plot/draw/pareto.m, scripts/plot/draw/patch.m,
scripts/plot/draw/peaks.m, scripts/plot/draw/pie.m,
scripts/plot/draw/pie3.m, scripts/plot/draw/plot.m,
scripts/plot/draw/plotyy.m, scripts/plot/draw/private/__bar__.m,
scripts/plot/draw/private/__contour__.m,
scripts/plot/draw/private/__errplot__.m,
scripts/plot/draw/private/__ezplot__.m,
scripts/plot/draw/private/__patch__.m,
scripts/plot/draw/private/__stem__.m, scripts/plot/draw/rectangle.m,
scripts/plot/draw/ribbon.m, scripts/plot/draw/rose.m,
scripts/plot/draw/scatter.m, scripts/plot/draw/scatter3.m,
scripts/plot/draw/semilogx.m, scripts/plot/draw/shrinkfaces.m,
scripts/plot/draw/sombrero.m, scripts/plot/draw/sphere.m,
scripts/plot/draw/stairs.m, scripts/plot/draw/stem.m,
scripts/plot/draw/stemleaf.m, scripts/plot/draw/surf.m,
scripts/plot/draw/surface.m, scripts/plot/draw/surfc.m,
scripts/plot/draw/surfl.m, scripts/plot/draw/surfnorm.m,
scripts/plot/draw/tetramesh.m, scripts/plot/draw/trimesh.m,
scripts/plot/draw/triplot.m, scripts/plot/draw/trisurf.m,
scripts/plot/util/__gnuplot_drawnow__.m,
scripts/plot/util/__plt_get_axis_arg__.m, scripts/plot/util/axes.m,
scripts/plot/util/clf.m, scripts/plot/util/copyobj.m,
scripts/plot/util/figure.m, scripts/plot/util/gcbo.m,
scripts/plot/util/graphics_toolkit.m, scripts/plot/util/hggroup.m,
scripts/plot/util/meshgrid.m, scripts/plot/util/newplot.m,
scripts/plot/util/print.m,
scripts/plot/util/private/__add_default_menu__.m,
scripts/plot/util/private/__fltk_print__.m,
scripts/plot/util/private/__gnuplot_print__.m,
scripts/plot/util/private/__print_parse_opts__.m,
scripts/plot/util/refreshdata.m, scripts/plot/util/subplot.m,
scripts/polynomial/conv.m, scripts/polynomial/poly.m,
scripts/polynomial/polyeig.m, scripts/polynomial/polyfit.m,
scripts/polynomial/polyval.m,
scripts/polynomial/private/__splinefit__.m,
scripts/polynomial/spline.m, scripts/prefs/prefdir.m,
scripts/prefs/preferences.m, scripts/prefs/private/prefsfile.m,
scripts/prefs/rmpref.m, scripts/signal/freqz.m,
scripts/signal/module.mk, scripts/sparse/eigs.m, scripts/sparse/pcg.m,
scripts/sparse/private/__sprand_impl__.m, scripts/sparse/sprand.m,
scripts/sparse/sprandn.m, scripts/sparse/spy.m, scripts/sparse/svds.m,
scripts/specfun/expint.m, scripts/specfun/factor.m,
scripts/special-matrix/gallery.m, scripts/special-matrix/hankel.m,
scripts/special-matrix/toeplitz.m, scripts/startup/inputrc,
scripts/statistics/base/kurtosis.m, scripts/statistics/base/moment.m,
scripts/statistics/base/qqplot.m, scripts/statistics/base/var.m,
scripts/statistics/distributions/betarnd.m,
scripts/statistics/distributions/binoinv.m,
scripts/statistics/distributions/binopdf.m,
scripts/statistics/distributions/binornd.m,
scripts/statistics/distributions/cauchy_rnd.m,
scripts/statistics/distributions/chi2rnd.m,
scripts/statistics/distributions/discrete_pdf.m,
scripts/statistics/distributions/discrete_rnd.m,
scripts/statistics/distributions/empirical_rnd.m,
scripts/statistics/distributions/exprnd.m,
scripts/statistics/distributions/frnd.m,
scripts/statistics/distributions/gamrnd.m,
scripts/statistics/distributions/geornd.m,
scripts/statistics/distributions/hygernd.m,
scripts/statistics/distributions/kolmogorov_smirnov_cdf.m,
scripts/statistics/distributions/laplace_cdf.m,
scripts/statistics/distributions/laplace_pdf.m,
scripts/statistics/distributions/logistic_cdf.m,
scripts/statistics/distributions/logistic_pdf.m,
scripts/statistics/distributions/lognrnd.m,
scripts/statistics/distributions/nbincdf.m,
scripts/statistics/distributions/nbininv.m,
scripts/statistics/distributions/nbinpdf.m,
scripts/statistics/distributions/nbinrnd.m,
scripts/statistics/distributions/normrnd.m,
scripts/statistics/distributions/poissinv.m,
scripts/statistics/distributions/poissrnd.m,
scripts/statistics/distributions/tinv.m,
scripts/statistics/distributions/trnd.m,
scripts/statistics/distributions/unidcdf.m,
scripts/statistics/distributions/unidpdf.m,
scripts/statistics/distributions/unidrnd.m,
scripts/statistics/distributions/unifrnd.m,
scripts/statistics/distributions/wblrnd.m,
scripts/statistics/models/module.mk,
scripts/statistics/tests/kruskal_wallis_test.m,
scripts/strings/base2dec.m, scripts/strings/deblank.m,
scripts/strings/dec2base.m, scripts/strings/dec2bin.m,
scripts/strings/dec2hex.m, scripts/strings/mat2str.m,
scripts/strings/ostrsplit.m, scripts/strings/regexptranslate.m,
scripts/strings/str2num.m, scripts/strings/strcat.m,
scripts/strings/strjoin.m, scripts/strings/strsplit.m,
scripts/strings/strtok.m, scripts/strings/strtrim.m,
scripts/strings/strtrunc.m, scripts/strings/substr.m,
scripts/testfun/__run_test_suite__.m, scripts/testfun/speed.m,
scripts/testfun/test.m, scripts/time/asctime.m,
scripts/time/datenum.m, scripts/time/datevec.m,
scripts/time/weekday.m, src/Makefile.am, test/Makefile.am,
test/build-bc-overload-tests.sh, test/build-sparse-tests.sh,
test/jit.tst, test/line-continue.tst: Strip trailing whitespace.
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Tue, 20 Jan 2015 08:26:57 -0500 |
parents | d63878346099 |
children | 4197fc428c7d |
line wrap: on
line source
## Copyright (C) 2007-2013 David Bateman ## ## This file is part of Octave. ## ## Octave is free software; you can redistribute it and/or modify it ## under the terms of the GNU General Public License as published by ## the Free Software Foundation; either version 3 of the License, or (at ## your option) any later version. ## ## Octave is distributed in the hope that it will be useful, but ## WITHOUT ANY WARRANTY; without even the implied warranty of ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU ## General Public License for more details. ## ## You should have received a copy of the GNU General Public License ## along with Octave; see the file COPYING. If not, see ## <http://www.gnu.org/licenses/>. ## -*- texinfo -*- ## @deftypefn {Function File} {[@var{c}, @var{hg}] =} __contour__ (@dots{}) ## Undocumented internal function. ## @end deftypefn function [c, hg] = __contour__ (varargin) ax = varargin{1}; zlevel = varargin{2}; filled = "off"; linespec.color = "auto"; linespec.linestyle = "-"; for i = 3:2:nargin arg = varargin{i}; if (ischar (arg) || iscellstr (arg)) [lspec, valid] = __pltopt__ ("__contour__", arg, false); if (valid) have_line_spec = true; varargin(i) = []; linespec = lspec; if (isempty (linespec.color)) linespec.color = "auto"; endif if (isempty (linespec.linestyle)) linespec.linestyle = "-"; endif break; endif endif endfor opts = {}; i = 3; while (i < length (varargin)) if (ischar (varargin{i})) if (strcmpi (varargin{i}, "fill")) filled = varargin{i+1}; varargin(i:i+1) = []; elseif (strcmpi (varargin{i}, "linecolor")) linespec.color = varargin{i+1}; varargin(i:i+1) = []; else opts(end+(1:2)) = varargin(i:i+1); varargin(i:i+1) = []; endif else i++; endif endwhile if (length (varargin) < 5) z1 = varargin{3}; x1 = 1 : columns (z1); y1 = 1 : rows (z1); else x1 = varargin{3}; y1 = varargin{4}; z1 = varargin{5}; endif if (! ismatrix (z1) || ! ismatrix (x1) || ! ismatrix (y1)) error ("__contour__: X, Y, and Z must be matrices"); endif if (length (varargin) == 4 || length (varargin) == 6) vn = varargin{end}; vnauto = false; else vn = 10; vnauto = true; endif if (isscalar (vn)) ## FIXME: The levels should be determined similarly to {x,y,z}ticks ## so that they aren't set at extremely odd values. lvl = linspace (min (z1(!isinf (z1))), max (z1(!isinf (z1))), vn + 2); ## Strip off max outlier, min must stay for contourf hole algorithm. lvl = lvl(1:end-1); else lvl = sort (vn); endif if (strcmpi (filled, "on")) if (isvector (x1) || isvector (y1)) [x1, y1] = meshgrid (x1, y1); endif [nr, nc] = size (z1); x0 = prepad (x1, nc+1, 2 * x1(1, 1) - x1(1, 2), 2); x0 = postpad (x0, nc+2, 2 * x1(1, nc) - x1(1, nc - 1), 2); x0 = [x0(1, :); x0; x0(1, :)]; y0 = prepad (y1, nr+1, 2 * y1(1, 1) - y1(2, 1), 1); y0 = postpad (y0, nr+2, 2 * y1(nr, 1) - y1(nr - 1, 1)); y0 = [y0(:, 1), y0, y0(:, 1)]; z0 = -Inf (nr+2, nc+2); z0(2:nr+1, 2:nc+1) = z1; [c, lev] = contourc (x0, y0, z0, lvl); else [c, lev] = contourc (x1, y1, z1, lvl); endif hg = hggroup (); opts = __add_datasource__ ("__countour__", hg, {"x", "y", "z"}, opts{:}); addproperty ("xdata", hg, "data", x1); addproperty ("ydata", hg, "data", y1); addproperty ("zdata", hg, "data", z1); addproperty ("contourmatrix", hg, "data", c); addlistener (hg, "xdata", @update_data); addlistener (hg, "ydata", @update_data); addlistener (hg, "zdata", @update_data); addlistener (hg, "contourmatrix", @update_data); addproperty ("fill", hg, "radio", "on|{off}", filled); ## The properties zlevel and zlevelmode don't exist in matlab, but allow the ## use of contourgroups with the contour3, meshc, and surfc functions. if (isnumeric (zlevel)) addproperty ("zlevelmode", hg, "radio", "{none}|auto|manual", "manual"); addproperty ("zlevel", hg, "data", zlevel); else addproperty ("zlevelmode", hg, "radio", "{none}|auto|manual", zlevel); addproperty ("zlevel", hg, "data", 0.); endif lvlstep = sum (diff (lvl)) / (length (lvl) - 1); addproperty ("levellist", hg, "data", lev); addproperty ("levelstep", hg, "double", lvlstep); if (vnauto) addproperty ("levellistmode", hg, "radio", "{auto}|manual", "auto"); addproperty ("levelstepmode", hg, "radio", "{auto}|manual", "auto"); elseif (isscalar (vn)) addproperty ("levellistmode", hg, "radio", "{auto}|manual", "auto"); addproperty ("levelstepmode", hg, "radio", "{auto}|manual", "manual"); else addproperty ("levellistmode", hg, "radio", "{auto}|manual", "manual"); addproperty ("levelstepmode", hg, "radio", "{auto}|manual", "auto"); endif addproperty ("labelspacing", hg, "double", 144); addproperty ("textlist", hg, "data", lev); addproperty ("textlistmode", hg, "radio", "{auto}|manual", "auto"); addproperty ("textstep", hg, "double", lvlstep); addproperty ("textstepmode", hg, "radio", "{auto}|manual", "auto"); addproperty ("showtext", hg, "radio", "on|{off}", "off"); addproperty ("linecolor", hg, "color", linespec.color, "{auto}|none"); addproperty ("linestyle", hg, "linelinestyle", linespec.linestyle); addproperty ("linewidth", hg, "linelinewidth", 0.5); ## Matlab property, although Octave does not implement it. addproperty ("hittestarea", hg, "radio", "on|{off}", "off"); addlistener (hg, "fill", {@update_data, "fill"}); addlistener (hg, "zlevelmode", @update_zlevel); addlistener (hg, "zlevel", @update_zlevel); addlistener (hg, "levellist", {@update_data, "levellist"}); addlistener (hg, "levelstep", {@update_data, "levelstep"}); addlistener (hg, "levellistmode", @update_data); addlistener (hg, "levelstepmode", @update_data); addlistener (hg, "labelspacing", @update_text); addlistener (hg, "textlist", {@update_text, "textlist"}); addlistener (hg, "textlistmode", @update_text); addlistener (hg, "textstep", {@update_text, "textstep"}); addlistener (hg, "textstepmode", @update_text); addlistener (hg, "showtext", @update_text); addlistener (hg, "linecolor", @update_line); addlistener (hg, "linestyle", @update_line); addlistener (hg, "linewidth", @update_line); ## Set axis before adding patches so that each new patch does not trigger ## new axis calculation. No need if mode is already "manual". if (all (strcmp (get (gca (), {"xlimmode", "ylimmode"}), "auto"))) axis ([min(x1(:)) max(x1(:)) min(y1(:)) max(y1(:))]); endif add_patch_children (hg); if (! isempty (opts)) set (hg, opts{:}); endif endfunction function add_patch_children (hg) c = get (hg, "contourmatrix"); lev = get (hg, "levellist"); fill = get (hg, "fill"); zlev = get (hg, "zlevel"); zmode = get (hg, "zlevelmode"); lc = get (hg, "linecolor"); lw = get (hg, "linewidth"); ls = get (hg, "linestyle"); filled = get (hg, "fill"); ca = gca (); ## Turn off automatic updating of clim while adding patches climmode = get (ca, "climmode"); set (ca, "climmode", "manual"); if (strcmp (lc, "auto")) lc = "flat"; endif if (strcmp (filled, "on")) lvl_eps = get_lvl_eps (lev); ## Decode contourc output format. i = 1; ncont = 0; while (i < columns (c)) ncont++; cont_lev(ncont) = c(1, i); cont_len(ncont) = c(2, i); cont_idx(ncont) = i+1; ii = i + (1:cont_len(ncont)); cont_area(ncont) = polyarea (c(1, ii), c(2, ii)); i += cont_len(ncont) + 1; endwhile ## Handle for each level the case where we have (a) hole(s) in a patch. ## Those are to be filled with the color of level below or with the ## background colour. for k = 1:numel (lev) lvl_idx = find (abs (cont_lev - lev(k)) < lvl_eps); len = numel (lvl_idx); if (len > 1) mark = false (size (lvl_idx)); a = 1; while (a < len) ## take 1st patch pa_idx = lvl_idx(a); ## get pointer to contour start, and contour length curr_ct_idx = cont_idx(pa_idx); curr_ct_len = cont_len(pa_idx); ## get contour curr_ct = c(:, curr_ct_idx:curr_ct_idx+curr_ct_len-1); b_vec = (a+1):len; next_ct_pt_vec = c(:, cont_idx(lvl_idx(b_vec))); in = inpolygon (next_ct_pt_vec(1,:), next_ct_pt_vec(2,:), curr_ct(1, :), curr_ct(2, :)); mark(b_vec(in)) = ! mark(b_vec(in)); a++; endwhile if (numel (mark) > 0) ## All marked contours describe a hole in a larger contour of ## the same level and must be filled with colour of level below. ma_idx = lvl_idx(mark); if (k > 1) ## Find color of level below. tmp = find (abs (cont_lev - lev(k - 1)) < lvl_eps); lvl_bel_idx = tmp(1); ## Set color of patches found. cont_lev(ma_idx) = cont_lev(lvl_bel_idx); else ## Set lowest level contour to NaN. cont_lev(ma_idx) = NaN; endif endif endif endfor ## The algorithm can create patches with the size of the plotting ## area, we would like to draw only the patch with the highest level. del_idx = []; max_idx = find (cont_area == max (cont_area)); if (numel (max_idx) > 1) ## delete double entries del_idx = max_idx(1:end-1); cont_area(del_idx) = cont_lev(del_idx) = []; cont_len(del_idx) = cont_idx(del_idx) = []; endif ## Now we have everything together and can start plotting the patches ## beginning with largest area. [~, svec] = sort (cont_area); len = ncont - numel (del_idx); h = []; for n = len:-1:1 idx = svec(n); ctmp = c(:, cont_idx(idx):cont_idx(idx) + cont_len(idx) - 1); if (all (ctmp(:,1) == ctmp(:,end))) ## patch() doesn't need/want closed contour. It will do it itself. ctmp(:,end) = []; endif if (isnan (cont_lev(idx))) fc = get (ca, "color"); if (strcmp (fc, "none")) fc = get (ancestor (ca, "figure"), "color"); endif else fc = "flat"; endif h = [h; __go_patch__(ca, "xdata", ctmp(1, :)(:), "ydata", ctmp(2, :)(:), "vertices", ctmp.', "faces", 1:(cont_len(idx)-1), "facevertexcdata", cont_lev(idx), "facecolor", fc, "cdata", cont_lev(idx), "edgecolor", lc, "linestyle", ls, "linewidth", lw, "parent", hg)]; endfor if (min (lev) == max (lev)) set (ca, "clim", [min(lev)-1, max(lev)+1], "layer", "top"); else set (ca, "clim", [min(lev), max(lev)], "layer", "top"); endif else ## Decode contourc output format. h = []; i = 1; while (i < length (c)) clev = c(1,i); clen = c(2,i); if (all (c(:,i+1) == c(:,i+clen))) p = c(:, i+1:i+clen-1).'; else p = [c(:, i+1:i+clen), NaN(2, 1)].'; endif switch (zmode) case "none" h = [h; __go_patch__(ca, "xdata", p(:,1), "ydata", p(:,2), "zdata", [], "vertices", p, "faces", 1:rows (p), "facevertexcdata", clev, "facecolor", "none", "cdata", clev, "edgecolor", lc, "linestyle", ls, "linewidth", lw, "parent", hg)]; case "auto" h = [h; __go_patch__(ca, "xdata", p(:,1), "ydata", p(:,2), "zdata", clev * ones (rows (p),1), "vertices", [p, clev * ones(rows(p),1)], "faces", 1:rows(p), "facevertexcdata", clev, "facecolor", "none", "cdata", clev, "edgecolor", lc, "linestyle", ls, "linewidth", lw, "parent", hg)]; otherwise h = [h; __go_patch__(ca, "xdata", p(:,1), "ydata", p(:,2), "zdata", zlev * ones (rows (p), 1), "vertices", [p, zlev * ones(rows(p),1)], "faces", 1:rows (p), "facevertexcdata", clev, "facecolor", "none", "cdata", clev, "edgecolor", lc, "linestyle", ls, "linewidth", lw, "parent", hg)]; endswitch i += clen + 1; endwhile endif set (ca, "climmode", climmode); endfunction function update_zlevel (h, ~) z = get (h, "zlevel"); zmode = get (h, "zlevelmode"); kids = get (h, "children"); switch (zmode) case "none" set (kids, "zdata", []); case "auto" for i = 1 : length (kids) set (kids(i), "zdata", get (kids(i), "cdata") .* ones (size (get (kids(i), "xdata")))); endfor otherwise for i = 1 : length (kids) set (kids(i), "zdata", z .* ones (size (get (kids(i), "xdata")))); endfor endswitch endfunction function update_line (h, ~) lc = get (h, "linecolor"); if (strcmp (lc, "auto")) lc = "flat"; endif set (findobj (h, "type", "patch"), "edgecolor", lc, "linewidth", get (h, "linewidth"), "linestyle", get (h, "linestyle")); endfunction function update_data (h, ~, prop = "") persistent recursive = false; if (! recursive) recursive = true; delete (get (h, "children")); switch (prop) case "levellist" set (h, "levellistmode", "manual") case "levelstep" set (h, "levelstepmode", "manual") case "fill" ## Switching from filled ('k' linespec) to unfilled, reset linecolor if (strcmp (get (h, "fill"), "off")) set (h, "linecolor", "auto"); else set (h, "linecolor", "black"); endif endswitch if (strcmp (get (h, "levellistmode"), "manual") && ! strcmp (prop, "levelstep")) lvl = get (h, "levellist"); elseif (strcmp (get (h, "levelstepmode"), "manual")) z = get (h, "zdata"); lvs = get (h, "levelstep"); lvl(1) = ceil (min (z(:)) / lvs) * lvs; lvl(2) = floor (max (z(:)) / lvs) * lvs; if (lvl(1) >= lvl(2)) lvl = median (z(:)); else lvl = lvl(1) : lvs : lvl(2); endif set (h, "levellist", lvl); set (h, "levellistmode", "auto"); else z = get (h, "zdata"); ## FIXME: The levels should be determined similarly to {x,y,z}ticks ## so that they aren't set at extremely odd values. lvl = linspace (min (z(!isinf (z))), max (z(!isinf (z))), 10 + 2); ## Strip off max outlier, min must stay for contourf hole algorithm. lvl = lvl(1:end-1); endif if (strcmp (get (h, "fill"), "on")) X = get (h, "xdata"); Y = get (h, "ydata"); Z = get (h, "zdata"); if (isvector (X) || isvector (Y)) [X, Y] = meshgrid (X, Y); endif [nr, nc] = size (Z); X0 = prepad (X, nc+1, 2 * X(1, 1) - X(1, 2), 2); X0 = postpad (X0, nc+2, 2 * X(1, nc) - X(1, nc - 1), 2); X0 = [X0(1, :); X0; X0(1, :)]; Y0 = prepad (Y, nr+1, 2 * Y(1, 1) - Y(2, 1), 1); Y0 = postpad (Y0, nr+2, 2 * Y(nr, 1) - Y(nr - 1, 1)); Y0 = [Y0(:, 1), Y0, Y0(:, 1)]; Z0 = -Inf (nr+2, nc+2); Z0(2:nr+1, 2:nc+1) = Z; [c, lev] = contourc (X0, Y0, Z0, lvl); else [c, lev] = contourc (get (h, "xdata"), get (h, "ydata"), get (h, "zdata"), lvl); endif set (h, "contourmatrix", c); if (strcmp (get (h, "levellistmode"), "manual")) ## Do nothing elseif (strcmp (get (h, "levelstepmode"), "manual")) set (h, "levellist", lev); else set (h, "levellist", lev); lvlstep = sum (diff (lvl)) / (length (lvl) - 1); set (h, "levelstep", lvlstep); endif add_patch_children (h); update_text (h); recursive = false; endif endfunction function update_text (h, ~, prop = "") persistent recursive = false; if (! recursive) recursive = true; delete (findobj (h, "type", "text")); switch (prop) case "textlist" set (h, "textlistmode", "manual") case "textstep" set (h, "textstepmode", "manual") endswitch if (strcmp (get (h, "textlistmode"), "manual")) lvl = get (h, "textlist"); elseif (strcmp (get (h, "textstepmode"), "manual")) lev = get (h, "levellist"); lvl_eps = get_lvl_eps (lev); stp = get (h, "textstep"); t = [0, floor(cumsum(diff (lev)) / (abs(stp) - lvl_eps))]; lvl = lev([true, t(1:end-1) != t(2:end)]); set (h, "textlist", lvl); else lvl = get (h, "levellist"); set (h, "textlist", lvl, "textstep", get (h, "levelstep")); endif if (strcmp (get (h, "showtext"), "on")) switch (get (h, "zlevelmode")) case "manual" __clabel__ (get (h, "contourmatrix"), lvl, h, get (h, "labelspacing"), get (h, "zlevel")); case "auto" __clabel__ (get (h, "contourmatrix"), lvl, h, get (h, "labelspacing"), "auto"); otherwise __clabel__ (get (h, "contourmatrix"), lvl, h, get (h, "labelspacing"), []); endswitch endif recursive = false; endif endfunction function lvl_eps = get_lvl_eps (lev) ## FIXME: is this the right thing to do for this tolerance? Should ## it be an absolute or relative tolerance, or switch from one to the ## other depending on the value of lev? if (isscalar (lev)) lvl_eps = abs (lev) * sqrt (eps) + sqrt (eps); else tmp = min (abs (diff (lev))); if (tmp < 10*eps) lvl_eps = sqrt (eps); else lvl_eps = tmp / 1000.0; endif endif endfunction