Mercurial > octave-nkf
annotate scripts/image/imshow.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 | 8e384416ebb3 |
| children | 0e1f5a750d00 |
| rev | line source |
|---|---|
|
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|
1 ## Copyright (C) 1994-2013 John W. Eaton |
|
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2 ## |
| 2313 | 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 | |
| 7016 | 7 ## the Free Software Foundation; either version 3 of the License, or (at |
| 8 ## your option) any later version. | |
| 2313 | 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 | |
| 7016 | 16 ## along with Octave; see the file COPYING. If not, see |
| 17 ## <http://www.gnu.org/licenses/>. | |
| 1024 | 18 |
| 3381 | 19 ## -*- texinfo -*- |
|
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20 ## @deftypefn {Function File} {} imshow (@var{im}) |
| 5934 | 21 ## @deftypefnx {Function File} {} imshow (@var{im}, @var{limits}) |
| 22 ## @deftypefnx {Function File} {} imshow (@var{im}, @var{map}) | |
| 7074 | 23 ## @deftypefnx {Function File} {} imshow (@var{rgb}, @dots{}) |
| 5934 | 24 ## @deftypefnx {Function File} {} imshow (@var{filename}) |
| 6309 | 25 ## @deftypefnx {Function File} {} imshow (@dots{}, @var{string_param1}, @var{value1}, @dots{}) |
|
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26 ## @deftypefnx {Function File} {@var{h} =} imshow (@dots{}) |
| 6368 | 27 ## Display the image @var{im}, where @var{im} can be a 2-dimensional |
|
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28 ## (grayscale image) or a 3-dimensional (RGB image) matrix. |
| 5934 | 29 ## |
| 30 ## If @var{limits} is a 2-element vector @code{[@var{low}, @var{high}]}, | |
| 31 ## the image is shown using a display range between @var{low} and | |
| 32 ## @var{high}. If an empty matrix is passed for @var{limits}, the | |
| 33 ## display range is computed as the range between the minimal and the | |
| 34 ## maximal value in the image. | |
| 3426 | 35 ## |
| 5934 | 36 ## If @var{map} is a valid color map, the image will be shown as an indexed |
| 37 ## image using the supplied color map. | |
| 38 ## | |
| 39 ## If a file name is given instead of an image, the file will be read and | |
| 40 ## shown. | |
| 3426 | 41 ## |
| 5934 | 42 ## If given, the parameter @var{string_param1} has value |
|
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43 ## @var{value1}. @var{string_param1} can be any of the following: |
|
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44 ## |
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45 ## @table @asis |
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46 ## @item @qcode{"displayrange"} |
| 5934 | 47 ## @var{value1} is the display range as described above. |
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48 ## |
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49 ## @item @qcode{"xdata"} |
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50 ## If @var{value1} is a two element vector, it must contain horizontal axis |
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51 ## limits in the form [xmin xmax]; Otherwise @var{value1} must be a |
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52 ## vector and only the first and last elements will be used for xmin and |
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53 ## xmax respectively. |
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54 ## |
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55 ## @item @qcode{"ydata"} |
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56 ## If @var{value1} is a two element vector, it must contain vertical axis |
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57 ## limits in the form [ymin ymax]; Otherwise @var{value1} must be a |
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58 ## vector and only the first and last elements will be used for ymin and |
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59 ## ymax respectively. |
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60 ## |
| 5934 | 61 ## @end table |
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62 ## |
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63 ## The optional return value @var{h} is a graphics handle to the image. |
| 5642 | 64 ## @seealso{image, imagesc, colormap, gray2ind, rgb2ind} |
| 3373 | 65 ## @end deftypefn |
| 904 | 66 |
| 7074 | 67 ## Author: Stefan van der Walt <stefan@sun.ac.za> |
| 5934 | 68 ## Author: Soren Hauberg <hauberg at gmail dot com> |
| 2312 | 69 ## Adapted-By: jwe |
| 559 | 70 |
| 7074 | 71 function h = imshow (im, varargin) |
| 559 | 72 |
| 5934 | 73 if (nargin == 0) |
| 74 print_usage (); | |
| 5318 | 75 endif |
| 76 | |
| 7328 | 77 display_range = NA; |
| 7074 | 78 true_color = false; |
| 79 indexed = false; | |
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80 xdata = ydata = []; |
| 7074 | 81 |
| 5935 | 82 ## Get the image. |
| 5934 | 83 if (ischar (im)) |
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84 [im, map] = imread (im); |
| 7074 | 85 indexed = true; |
| 86 colormap (map); | |
| 87 endif | |
| 88 | |
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89 nd = ndims (im); |
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90 |
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91 if (! ((isnumeric (im) || islogical (im)) && (nd == 2 || nd == 3))) |
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92 error ("imshow: IM must be an image or the filename of an image"); |
| 5318 | 93 endif |
| 7074 | 94 |
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95 if (nd == 2) |
| 7074 | 96 if (! indexed) |
| 97 colormap (gray ()); | |
| 98 endif | |
| 99 elseif (size (im, 3) == 3) | |
| 100 if (ismember (class (im), {"uint8", "uint16", "double", "single"})) | |
| 101 true_color = true; | |
| 102 else | |
| 103 error ("imshow: color image must be uint8, uint16, double, or single"); | |
| 104 endif | |
| 105 else | |
| 106 error ("imshow: expecting MxN or MxNx3 matrix for image"); | |
| 5318 | 107 endif |
| 108 | |
| 7074 | 109 narg = 1; |
| 110 while (narg <= numel (varargin)) | |
| 111 arg = varargin{narg++}; | |
| 112 if (isnumeric (arg)) | |
| 7331 | 113 if (numel (arg) == 2 || isempty (arg)) |
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114 display_range = arg; |
| 7074 | 115 elseif (columns (arg) == 3) |
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116 indexed = true; |
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117 colormap (arg); |
| 7074 | 118 elseif (! isempty (arg)) |
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119 error ("imshow: argument number %d is invalid", narg+1); |
| 7074 | 120 endif |
| 121 elseif (ischar (arg)) | |
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122 switch (tolower (arg)) |
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123 case "displayrange"; |
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124 display_range = varargin{narg++}; |
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125 case "xdata"; |
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126 xdata = varargin{narg++}; |
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127 if (! isvector (xdata)) |
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128 error ("imshow: xdata must be a vector") |
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129 endif |
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130 xdata = [xdata(1) xdata(end)]; |
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131 case "ydata"; |
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132 ydata = varargin{narg++}; |
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133 if (! isvector (ydata)) |
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134 error ("imshow: expect a vector for ydata") |
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135 endif |
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136 ydata = [ydata(1) ydata(end)]; |
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137 case {"truesize", "initialmagnification"} |
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138 warning ("image: zoom argument ignored -- use GUI features"); |
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139 otherwise |
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140 warning ("imshow: unrecognized property %s", arg); |
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141 narg++; |
| 7074 | 142 endswitch |
| 143 else | |
| 144 error ("imshow: argument number %d is invalid", narg+1); | |
| 145 endif | |
| 146 endwhile | |
| 147 | |
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148 ## Check for complex images. |
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149 if (iscomplex (im)) |
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150 warning ("imshow: only showing real part of complex image"); |
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151 im = real (im); |
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152 endif |
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153 |
| 8117 | 154 ## Set default display range if display_range not set yet. |
| 7328 | 155 if (isempty (display_range)) |
| 7074 | 156 display_range = [min(im(:)), max(im(:))]; |
| 8117 | 157 elseif (isna (display_range)) |
| 7074 | 158 t = class (im); |
| 159 switch (t) | |
| 160 case {"double", "single", "logical"} | |
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161 display_range = [0, 1]; |
| 7074 | 162 case {"int8", "int16", "int32", "uint8", "uint16", "uint32"} |
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163 display_range = [intmin(t), intmax(t)]; |
| 7074 | 164 otherwise |
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165 error ("imshow: invalid data type for image"); |
| 7074 | 166 endswitch |
| 167 endif | |
| 5934 | 168 |
| 6219 | 169 nans = isnan (im(:)); |
| 170 if (any (nans)) | |
| 171 warning ("Octave:imshow-NaN", | |
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172 "imshow: pixels with NaN or NA values are set to minimum pixel value"); |
| 6219 | 173 im(nans) = display_range(1); |
| 174 endif | |
| 175 | |
| 7074 | 176 ## This is for compatibility. |
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177 if (! (indexed || (true_color && isinteger (im))) || islogical (im)) |
| 7074 | 178 im = double (im); |
| 179 endif | |
| 180 | |
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181 ## Clamp the image to the range boundaries |
| 7315 | 182 if (! (true_color || indexed || islogical (im))) |
| 7328 | 183 low = display_range(1); |
| 184 high = display_range(2); | |
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185 im(im < low) = low; |
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186 im(im > high) = high; |
| 4836 | 187 endif |
| 6368 | 188 |
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189 if (true_color || indexed) |
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190 tmp = image (xdata, ydata, im); |
| 5934 | 191 else |
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192 tmp = image (xdata, ydata, im); |
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193 set (tmp, "cdatamapping", "scaled"); |
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194 ## The backend is responsible for scaling to clim if necessary. |
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195 set (gca (), "clim", display_range); |
| 5934 | 196 endif |
| 11324 | 197 set (gca (), "visible", "off", "ydir", "reverse"); |
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198 axis ("image"); |
| 7074 | 199 |
| 200 if (nargout > 0) | |
| 201 h = tmp; | |
| 202 endif | |
| 203 | |
| 559 | 204 endfunction |
| 4836 | 205 |
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206 |
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207 %!demo |
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208 %! clf; |
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209 %! imshow ("default.img"); |
| 4836 | 210 |
| 211 %!demo | |
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212 %! clf; |
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213 %! imshow ("default.img"); |
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214 %! colormap (autumn (64)); |
| 7074 | 215 |
| 216 %!demo | |
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217 %! clf; |
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218 %! [I, M] = imread ("default.img"); |
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219 %! imshow (I, M); |
| 4836 | 220 |
| 221 %!demo | |
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222 %! clf; |
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223 %! [I, M] = imread ("default.img"); |
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224 %! [R, G, B] = ind2rgb (I, M); |
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225 %! imshow (cat (3, R, G*0.5, B*0.8)); |
| 5318 | 226 |
| 227 %!demo | |
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228 %! clf; |
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229 %! imshow (rand (100, 100)); |
| 5318 | 230 |
| 231 %!demo | |
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232 %! clf; |
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233 %! imshow (rand (100, 100, 3)); |
| 7074 | 234 |
| 235 %!demo | |
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236 %! clf; |
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237 %! imshow (100*rand (100, 100, 3)); |
| 7074 | 238 |
| 239 %!demo | |
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240 %! clf; |
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241 %! imshow (rand (100, 100)); |
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242 %! colormap (jet (64)); |
| 7074 | 243 |
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244 %% Test input validation |
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245 %!error imshow () |
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246 %!error <IM must be an image> imshow ({"cell"}) |
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247 %!error <expecting MxN or MxNx3 matrix> imshow (ones (4,4,4)) |
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248 |