Mercurial > octave-nkf
annotate doc/interpreter/sparseimages.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 | 3252b366bb5d |
children | 4197fc428c7d |
rev | line source |
---|---|
17744
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maint: Update copyright notices for release.
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parents:
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|
1 ## Copyright (C) 2006-2013 David Bateman |
7018 | 2 ## |
3 ## This file is part of Octave. | |
4 ## | |
5 ## Octave is free software; you can redistribute it and/or modify it | |
6 ## under the terms of the GNU General Public License as published by | |
7 ## the Free Software Foundation; either version 3 of the License, or (at | |
8 ## your option) any later version. | |
9 ## | |
10 ## Octave is distributed in the hope that it will be useful, but | |
11 ## WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 ## General Public License for more details. | |
14 ## | |
15 ## You should have received a copy of the GNU General Public License | |
16 ## along with Octave; see the file COPYING. If not, see | |
17 ## <http://www.gnu.org/licenses/>. | |
18 | |
6126 | 19 function sparseimages (nm, typ) |
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20 graphics_toolkit ("gnuplot"); |
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21 set_print_size (); |
7257 | 22 if (strcmp (typ, "png")) |
23 set (0, "defaulttextfontname", "*"); | |
24 endif | |
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25 |
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26 if (__have_feature__ ("COLAMD") |
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27 && __have_feature__ ("CHOLMOD") |
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28 && __have_feature__ ("UMFPACK")) |
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29 if (strcmp (typ,"txt")) |
6126 | 30 txtimages (nm, 15, typ); |
6003 | 31 else |
6126 | 32 if (strcmp (nm, "gplot")) |
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33 gplotimages ("gplot", typ); |
6126 | 34 elseif (strcmp (nm, "grid")) |
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35 femimages ("grid", typ); |
6126 | 36 else |
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37 otherimages (nm, 200, typ); |
6126 | 38 endif |
6003 | 39 endif |
6040 | 40 else ## There is no sparse matrix implementation available because |
41 ## of missing libraries, plot sombreros instead | |
42 sombreroimage (nm, typ); | |
43 endif | |
6003 | 44 endfunction |
45 | |
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46 function set_print_size () |
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47 image_size = [5.0, 3.5]; # in inches, 16:9 format |
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48 border = 0; # For postscript use 50/72 |
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49 set (0, "defaultfigurepapertype", "<custom>"); |
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50 set (0, "defaultfigurepaperorientation", "landscape"); |
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51 set (0, "defaultfigurepapersize", image_size + 2*border); |
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52 set (0, "defaultfigurepaperposition", [border, border, image_size]); |
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53 endfunction |
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54 |
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55 function hide_output () |
6257 | 56 f = figure (1); |
57 set (f, "visible", "off"); | |
6003 | 58 endfunction |
59 | |
6040 | 60 function gplotimages (nm, typ) |
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61 hide_output (); |
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62 if (strcmp (typ, "eps")) |
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63 d_typ = "-depsc2"; |
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64 else |
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65 d_typ = ["-d" typ]; |
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66 endif |
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67 |
6040 | 68 A = sparse ([2,6,1,3,2,4,3,5,4,6,1,5], |
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69 [1,1,2,2,3,3,4,4,5,5,6,6], 1, 6, 6); |
6003 | 70 xy = [0,4,8,6,4,2;5,0,5,7,5,7]'; |
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71 gplot (A, xy); |
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72 print ([nm "." typ], d_typ); |
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73 hide_output (); |
6003 | 74 endfunction |
75 | |
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76 function txtimages (nm, n, typ) |
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77 a = 10*speye (n) + sparse (1:n,ceil([1:n]/2),1,n,n) + ... |
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78 sparse (ceil ([1:n]/2),1:n,1,n,n); |
6003 | 79 if (strcmp (nm, "gplot") || strcmp (nm, "grid")) |
80 fid = fopen (sprintf ("%s.txt", nm), "wt"); | |
7256 | 81 fputs (fid, "\n"); |
6003 | 82 fputs (fid, "+---------------------------------+\n"); |
83 fputs (fid, "| Image unavailable in text mode. |\n"); | |
84 fputs (fid, "+---------------------------------+\n"); | |
85 fclose (fid); | |
86 elseif (strcmp (nm, "spmatrix")) | |
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87 printsparse (a, ["spmatrix." typ]); |
6003 | 88 else |
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89 if (__have_feature__ ("COLAMD") && __have_feature__ ("CHOLMOD")) |
6003 | 90 if (strcmp (nm, "spchol")) |
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91 r1 = chol (a); |
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92 printsparse (r1, ["spchol." typ]); |
6003 | 93 elseif (strcmp (nm, "spcholperm")) |
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94 [r2,p2,q2] = chol (a); |
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95 printsparse(r2, ["spcholperm." typ]); |
6003 | 96 endif |
97 ## printf("Text NNZ: Matrix %d, Chol %d, PermChol %d\n",nnz(a),nnz(r1),nnz(r2)); | |
98 endif | |
99 endif | |
100 endfunction | |
101 | |
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102 function otherimages (nm, n, typ) |
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103 hide_output (); |
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104 if (strcmp (typ, "eps")) |
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105 d_typ = "-depsc2"; |
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106 else |
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107 d_typ = ["-d" typ]; |
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108 endif |
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109 |
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110 a = 10*speye (n) + sparse (1:n,ceil([1:n]/2),1,n,n) + ... |
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111 sparse (ceil ([1:n]/2),1:n,1,n,n); |
6003 | 112 if (strcmp (nm, "spmatrix")) |
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113 spy (a); |
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114 axis ("ij"); |
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115 print (["spmatrix." typ], d_typ); |
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116 hide_output (); |
6003 | 117 else |
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118 if (__have_feature__ ("COLAMD") && __have_feature__ ("CHOLMOD")) |
6003 | 119 if (strcmp (nm, "spchol")) |
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120 r1 = chol (a); |
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121 spy (r1); |
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122 axis ("ij"); |
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123 print (["spchol." typ], d_typ); |
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124 hide_output (); |
6003 | 125 elseif (strcmp (nm, "spcholperm")) |
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126 [r2,p2,q2] = chol (a); |
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127 spy (r2); |
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128 axis ("ij"); |
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129 print (["spcholperm." typ], d_typ); |
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130 hide_output (); |
6003 | 131 endif |
132 ## printf("Image NNZ: Matrix %d, Chol %d, PermChol %d\n",nnz(a),nnz(r1),nnz(r2)); | |
133 endif | |
134 endif | |
135 endfunction | |
136 | |
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137 function printsparse (a, nm) |
6003 | 138 fid = fopen (nm,"wt"); |
7256 | 139 fputs (fid, "\n"); |
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140 for i = 1:rows (a) |
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141 if (rem (i,5) == 0) |
6003 | 142 fprintf (fid," %2d - ", i); |
143 else | |
144 fprintf (fid," | "); | |
145 endif | |
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146 for j = 1:columns (a) |
6003 | 147 if (a(i,j) == 0) |
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148 fprintf (fid," "); |
6003 | 149 else |
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150 fprintf (fid," *"); |
6003 | 151 endif |
152 endfor | |
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153 fprintf (fid,"\n"); |
6003 | 154 endfor |
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155 fprintf (fid," |-"); |
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156 for j = 1:columns (a) |
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157 if (rem (j,5) == 0) |
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158 fprintf (fid,"-|"); |
6003 | 159 else |
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160 fprintf (fid,"--"); |
6003 | 161 endif |
162 endfor | |
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163 fprintf (fid,"\n"); |
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164 fprintf (fid," "); |
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165 for j = 1:columns (a) |
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166 if (rem (j,5) == 0) |
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167 fprintf (fid,"%2d",j); |
6003 | 168 else |
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169 fprintf (fid," "); |
6003 | 170 endif |
171 endfor | |
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172 fclose (fid); |
6003 | 173 endfunction |
174 | |
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175 function femimages (nm, typ) |
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176 hide_output (); |
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177 if (strcmp (typ, "eps")) |
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178 d_typ = "-depsc2"; |
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179 else |
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180 d_typ = ["-d" typ]; |
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181 endif |
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182 |
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183 if (__have_feature__ ("COLAMD") |
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184 && __have_feature__ ("CHOLMOD") |
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185 && __have_feature__ ("UMFPACK")) |
6003 | 186 ## build a rectangle |
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187 node_y = [1;1.2;1.5;1.8;2] * ones (1,11); |
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188 node_x = ones (5,1) * [1,1.05,1.1,1.2,1.3,1.5,1.7,1.8,1.9,1.95,2]; |
6003 | 189 nodes = [node_x(:), node_y(:)]; |
190 | |
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191 [h,w] = size (node_x); |
6003 | 192 elems = []; |
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193 for idx = 1 : w-1 |
6003 | 194 widx = (idx-1)*h; |
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195 elems = [elems; widx+[(1:h-1);(2:h);h+(1:h-1)]']; |
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196 elems = [elems; widx+[(2:h);h+(2:h);h+(1:h-1)]']; |
6003 | 197 endfor |
198 | |
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199 E = size (elems,1); # No. of elements |
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200 N = size (nodes,1); # No. of elements |
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201 D = size (elems,2); # dimensions+1 |
6003 | 202 |
203 ## Plot FEM Geometry | |
204 elemx = elems(:,[1,2,3,1])'; | |
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205 xelems = reshape (nodes(elemx, 1), 4, E); |
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206 yelems = reshape (nodes(elemx, 2), 4, E); |
6003 | 207 |
208 ## Set element conductivity | |
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209 conductivity = [1*ones(1,16), 2*ones(1,48), 1*ones(1,16)]; |
6003 | 210 |
211 ## Dirichlet boundary conditions | |
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212 D_nodes = [1:5, 51:55]; |
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213 D_value = [10*ones(1,5), 20*ones(1,5)]; |
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214 |
6003 | 215 ## Neumann boundary conditions |
216 ## Note that N_value must be normalized by the boundary | |
217 ## length and element conductivity | |
218 N_nodes = []; | |
219 N_value = []; | |
220 | |
221 ## Calculate connectivity matrix | |
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222 C = sparse ((1:D*E), reshape (elems',D*E,1),1, D*E, N); |
6003 | 223 |
224 ## Calculate stiffness matrix | |
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225 Siidx = floor ([0:D*E-1]'/D)*D*ones(1,D) + ones(D*E,1)*(1:D); |
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226 Sjidx = [1:D*E]'*ones (1,D); |
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227 Sdata = zeros (D*E,D); |
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228 dfact = prod (2:(D-1)); |
6003 | 229 for j = 1:E |
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230 a = inv ([ ones(D,1), nodes( elems(j,:), : ) ]); |
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231 const = conductivity(j)*2/dfact/abs (det (a)); |
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232 Sdata(D*(j-1)+(1:D),:) = const * a(2:D,:)'*a(2:D,:); |
6003 | 233 endfor |
234 | |
235 ## Element-wise system matrix | |
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236 SE = sparse (Siidx,Sjidx,Sdata); |
6003 | 237 ## Global system matrix |
238 S = C'* SE *C; | |
239 | |
240 ## Set Dirichlet boundary | |
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241 V = zeros (N,1); |
6003 | 242 V(D_nodes) = D_value; |
243 idx = 1:N; | |
244 idx(D_nodes) = []; | |
245 | |
246 ## Set Neumann boundary | |
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247 Q = zeros (N,1); |
6003 | 248 Q(N_nodes) = N_value; # FIXME |
249 | |
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250 V(idx) = S(idx,idx) \ ( Q(idx) - S(idx,D_nodes)*V(D_nodes) ); |
6003 | 251 |
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252 velems = reshape (V(elemx), 4, E); |
6178 | 253 |
254 plot3 (xelems, yelems, velems); | |
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255 view (80, 10); |
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256 print ([nm "." typ], d_typ); |
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257 hide_output (); |
6003 | 258 endif |
259 endfunction | |
6040 | 260 |
261 ## There is no sparse matrix implementation available because of missing | |
262 ## libraries, plot sombreros instead. Also plot a nice title that we are | |
263 ## sorry about that. | |
264 function sombreroimage (nm, typ) | |
265 if (strcmp (typ, "txt")) | |
266 fid = fopen (sprintf ("%s.txt", nm), "wt"); | |
7256 | 267 fputs (fid, "\n"); |
6040 | 268 fputs (fid, "+---------------------------------------+\n"); |
269 fputs (fid, "| Image unavailable because of a |\n"); | |
270 fputs (fid, "| missing sparse matrix implementation. |\n"); | |
271 fputs (fid, "+---------------------------------------+\n"); | |
272 fclose (fid); | |
273 return; | |
274 else ## if (!strcmp (typ, "txt")) | |
275 | |
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276 hide_output (); |
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277 if (strcmp (typ, "eps")) |
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278 d_typ = "-depsc2"; |
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279 else |
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280 d_typ = ["-d" typ]; |
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281 endif |
6040 | 282 |
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283 [x, y, z] = sombrero (); |
6040 | 284 unwind_protect |
6257 | 285 mesh (x, y, z); |
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286 title ("Sorry, graphics are unavailable because Octave was\ncompiled without a sparse matrix implementation."); |
6040 | 287 unwind_protect_cleanup |
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288 print ([nm "." typ], d_typ); |
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289 hide_output (); |
6040 | 290 end_unwind_protect |
291 endif | |
292 endfunction | |
7262 | 293 |
294 ## generate something for the texinfo @image command to process | |
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295 function image_as_txt (nm) |
7262 | 296 fid = fopen (sprintf ("%s.txt", nm), "wt"); |
297 fputs (fid, "\n"); | |
298 fputs (fid, "+---------------------------------+\n"); | |
299 fputs (fid, "| Image unavailable in text mode. |\n"); | |
300 fputs (fid, "+---------------------------------+\n"); | |
301 fclose (fid); | |
302 endfunction | |
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303 |