Mercurial > octave-nkf
annotate scripts/image/imwrite.m @ 17281:bc924baa2c4e
doc: Add new @qcode macro for code samples which are quoted.
Macro handles options ("on") or properties ("position") more elegantly
than @code{"text"}.
* doc/interpreter/macros.texi: Add new @qcode macro.
* doc/interpreter/tips.txi: Add documentation about @qcode macro.
* doc/interpreter/basics.txi, doc/interpreter/container.txi,
doc/interpreter/emacs.txi, doc/interpreter/errors.txi,
doc/interpreter/eval.txi, doc/interpreter/expr.txi,
doc/interpreter/external.txi, doc/interpreter/func.txi,
doc/interpreter/grammar.txi, doc/interpreter/image.txi,
doc/interpreter/install.txi, doc/interpreter/interp.txi,
doc/interpreter/io.txi, doc/interpreter/matrix.txi,
doc/interpreter/numbers.txi, doc/interpreter/oop.txi,
doc/interpreter/package.txi, doc/interpreter/plot.txi,
doc/interpreter/quad.txi, doc/interpreter/sparse.txi,
doc/interpreter/strings.txi, doc/interpreter/system.txi,
doc/interpreter/vectorize.txi, libinterp/corefcn/balance.cc,
libinterp/corefcn/bitfcns.cc, libinterp/corefcn/cellfun.cc,
libinterp/corefcn/conv2.cc, libinterp/corefcn/data.cc,
libinterp/corefcn/debug.cc, libinterp/corefcn/defaults.cc,
libinterp/corefcn/dirfns.cc, libinterp/corefcn/dlmread.cc,
libinterp/corefcn/error.cc, libinterp/corefcn/file-io.cc,
libinterp/corefcn/find.cc, libinterp/corefcn/gammainc.cc,
libinterp/corefcn/graphics.cc, libinterp/corefcn/help.cc,
libinterp/corefcn/hex2num.cc, libinterp/corefcn/input.cc,
libinterp/corefcn/load-path.cc, libinterp/corefcn/load-save.cc,
libinterp/corefcn/ls-oct-ascii.cc, libinterp/corefcn/lu.cc,
libinterp/corefcn/luinc.cc, libinterp/corefcn/matrix_type.cc,
libinterp/corefcn/oct-hist.cc, libinterp/corefcn/pager.cc,
libinterp/corefcn/pr-output.cc, libinterp/corefcn/pt-jit.cc,
libinterp/corefcn/qz.cc, libinterp/corefcn/rand.cc,
libinterp/corefcn/regexp.cc, libinterp/corefcn/schur.cc,
libinterp/corefcn/sighandlers.cc, libinterp/corefcn/sparse.cc,
libinterp/corefcn/spparms.cc, libinterp/corefcn/str2double.cc,
libinterp/corefcn/svd.cc, libinterp/corefcn/symtab.cc,
libinterp/corefcn/syscalls.cc, libinterp/corefcn/toplev.cc,
libinterp/corefcn/tril.cc, libinterp/corefcn/typecast.cc,
libinterp/corefcn/utils.cc, libinterp/corefcn/variables.cc,
libinterp/dldfcn/__init_fltk__.cc, libinterp/dldfcn/chol.cc,
libinterp/dldfcn/colamd.cc, libinterp/dldfcn/fftw.cc, libinterp/dldfcn/qr.cc,
libinterp/dldfcn/symbfact.cc, libinterp/octave-value/ov-base.cc,
libinterp/octave-value/ov-fcn-handle.cc,
libinterp/octave-value/ov-fcn-inline.cc, libinterp/octave-value/ov-java.cc,
libinterp/octave-value/ov-range.cc, libinterp/octave-value/ov-struct.cc,
libinterp/octave-value/ov-usr-fcn.cc, libinterp/parse-tree/oct-parse.in.yy,
libinterp/parse-tree/pt-binop.cc, libinterp/parse-tree/pt-eval.cc,
libinterp/parse-tree/pt-mat.cc, scripts/@ftp/ftp.m,
scripts/deprecated/java_convert_matrix.m, scripts/deprecated/java_debug.m,
scripts/deprecated/java_unsigned_conversion.m, scripts/deprecated/shell_cmd.m,
scripts/general/dblquad.m, scripts/general/display.m,
scripts/general/genvarname.m, scripts/general/idivide.m,
scripts/general/interp1.m, scripts/general/interp2.m,
scripts/general/interp3.m, scripts/general/interpn.m, scripts/general/isa.m,
scripts/general/profexplore.m, scripts/general/profile.m,
scripts/general/quadgk.m, scripts/general/randi.m, scripts/general/structfun.m,
scripts/general/subsindex.m, scripts/general/triplequad.m,
scripts/geometry/griddata.m, scripts/geometry/griddata3.m,
scripts/geometry/griddatan.m, scripts/geometry/voronoi.m, scripts/help/help.m,
scripts/help/lookfor.m, scripts/image/cmpermute.m, scripts/image/colormap.m,
scripts/image/image.m, scripts/image/imagesc.m, scripts/image/imfinfo.m,
scripts/image/imformats.m, scripts/image/imread.m, scripts/image/imshow.m,
scripts/image/imwrite.m, scripts/image/ind2gray.m, scripts/image/lines.m,
scripts/image/rgb2ind.m, scripts/image/spinmap.m, scripts/io/dlmwrite.m,
scripts/io/strread.m, scripts/io/textread.m, scripts/io/textscan.m,
scripts/java/javaclasspath.m, scripts/java/usejava.m,
scripts/miscellaneous/bzip2.m, scripts/miscellaneous/computer.m,
scripts/miscellaneous/copyfile.m, scripts/miscellaneous/debug.m,
scripts/miscellaneous/dos.m, scripts/miscellaneous/edit.m,
scripts/miscellaneous/gzip.m, scripts/miscellaneous/license.m,
scripts/miscellaneous/mkoctfile.m, scripts/miscellaneous/movefile.m,
scripts/miscellaneous/parseparams.m, scripts/miscellaneous/unix.m,
scripts/optimization/fminbnd.m, scripts/optimization/fminsearch.m,
scripts/optimization/fminunc.m, scripts/optimization/fsolve.m,
scripts/optimization/fzero.m, scripts/optimization/glpk.m,
scripts/optimization/lsqnonneg.m, scripts/optimization/optimset.m,
scripts/optimization/pqpnonneg.m, scripts/pkg/pkg.m, scripts/plot/allchild.m,
scripts/plot/ancestor.m, scripts/plot/area.m, scripts/plot/axis.m,
scripts/plot/bar.m, scripts/plot/barh.m, scripts/plot/box.m,
scripts/plot/caxis.m, scripts/plot/cla.m, scripts/plot/clabel.m,
scripts/plot/clf.m, scripts/plot/close.m, scripts/plot/colorbar.m,
scripts/plot/daspect.m, scripts/plot/ezmesh.m, scripts/plot/ezmeshc.m,
scripts/plot/ezsurf.m, scripts/plot/ezsurfc.m, scripts/plot/findall.m,
scripts/plot/findobj.m, scripts/plot/gcbo.m, scripts/plot/gcf.m,
scripts/plot/gco.m, scripts/plot/grid.m, scripts/plot/guihandles.m,
scripts/plot/hdl2struct.m, scripts/plot/hidden.m, scripts/plot/hold.m,
scripts/plot/isonormals.m, scripts/plot/isosurface.m, scripts/plot/legend.m,
scripts/plot/mesh.m, scripts/plot/meshc.m, scripts/plot/meshz.m,
scripts/plot/newplot.m, scripts/plot/orient.m, scripts/plot/pareto.m,
scripts/plot/patch.m, scripts/plot/pbaspect.m, scripts/plot/pcolor.m,
scripts/plot/plot.m, scripts/plot/print.m,
scripts/plot/private/__add_default_menu__.m, scripts/plot/quiver.m,
scripts/plot/quiver3.m, scripts/plot/refreshdata.m, scripts/plot/saveas.m,
scripts/plot/scatter.m, scripts/plot/scatter3.m, scripts/plot/shading.m,
scripts/plot/shrinkfaces.m, scripts/plot/slice.m, scripts/plot/stem.m,
scripts/plot/stem3.m, scripts/plot/struct2hdl.m, scripts/plot/subplot.m,
scripts/plot/surf.m, scripts/plot/surfc.m, scripts/plot/surfl.m,
scripts/plot/tetramesh.m, scripts/plot/uigetfile.m, scripts/plot/uimenu.m,
scripts/plot/uiputfile.m, scripts/plot/waterfall.m, scripts/plot/whitebg.m,
scripts/plot/xlim.m, scripts/plot/ylim.m, scripts/plot/zlim.m,
scripts/polynomial/conv.m, scripts/polynomial/polyout.m,
scripts/polynomial/splinefit.m, scripts/set/ismember.m, scripts/set/powerset.m,
scripts/set/setdiff.m, scripts/set/union.m, scripts/set/unique.m,
scripts/signal/detrend.m, scripts/signal/filter2.m, scripts/signal/freqz.m,
scripts/signal/periodogram.m, scripts/signal/spectral_adf.m,
scripts/signal/spectral_xdf.m, scripts/sparse/eigs.m, scripts/sparse/svds.m,
scripts/specfun/legendre.m, scripts/special-matrix/gallery.m,
scripts/statistics/base/mean.m, scripts/statistics/base/moment.m,
scripts/statistics/tests/cor_test.m,
scripts/statistics/tests/kolmogorov_smirnov_test.m,
scripts/statistics/tests/kolmogorov_smirnov_test_2.m,
scripts/statistics/tests/kruskal_wallis_test.m,
scripts/statistics/tests/prop_test_2.m, scripts/statistics/tests/sign_test.m,
scripts/statistics/tests/t_test.m, scripts/statistics/tests/t_test_2.m,
scripts/statistics/tests/t_test_regression.m,
scripts/statistics/tests/u_test.m, scripts/statistics/tests/var_test.m,
scripts/statistics/tests/welch_test.m,
scripts/statistics/tests/wilcoxon_test.m, scripts/statistics/tests/z_test.m,
scripts/statistics/tests/z_test_2.m, scripts/strings/base2dec.m,
scripts/strings/index.m, scripts/strings/isstrprop.m,
scripts/strings/mat2str.m, scripts/strings/regexptranslate.m,
scripts/strings/rindex.m, scripts/strings/str2num.m, scripts/strings/strcat.m,
scripts/strings/strjust.m, scripts/strings/strmatch.m,
scripts/strings/validatestring.m, scripts/testfun/demo.m,
scripts/testfun/example.m, scripts/testfun/test.m, scripts/time/addtodate.m,
scripts/time/asctime.m, scripts/time/datestr.m, scripts/time/datetick.m,
scripts/time/weekday.m, scripts/ui/errordlg.m, scripts/ui/helpdlg.m,
scripts/ui/inputdlg.m, scripts/ui/listdlg.m, scripts/ui/msgbox.m,
scripts/ui/questdlg.m, scripts/ui/warndlg.m: Use new @qcode macro.
| author | Rik <rik@octave.org> |
|---|---|
| date | Mon, 19 Aug 2013 20:46:38 -0700 |
| parents | 27800ef1f7d2 |
| children | eb7e9a991ffb |
| rev | line source |
|---|---|
|
14138
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maint: update copyright notices for 2012
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1 ## Copyright (C) 2008-2012 John W. Eaton |
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2 ## Copyright (C) 2013 Carnë Draug |
| 7987 | 3 ## |
| 4 ## This file is part of Octave. | |
| 5 ## | |
| 6 ## Octave is free software; you can redistribute it and/or modify it | |
| 7 ## under the terms of the GNU General Public License as published by | |
| 8 ## the Free Software Foundation; either version 3 of the License, or (at | |
| 9 ## your option) any later version. | |
| 10 ## | |
| 11 ## Octave is distributed in the hope that it will be useful, but | |
| 12 ## WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 ## General Public License for more details. | |
| 15 ## | |
| 16 ## You should have received a copy of the GNU General Public License | |
| 17 ## along with Octave; see the file COPYING. If not, see | |
| 18 ## <http://www.gnu.org/licenses/>. | |
| 19 | |
| 20 ## -*- texinfo -*- | |
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21 ## @deftypefn {Function File} {} imwrite (@var{img}, @var{filename}) |
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22 ## @deftypefnx {Function File} {} imwrite (@var{img}, @var{filename}, @var{ext}) |
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23 ## @deftypefnx {Function File} {} imwrite (@var{img}, @var{map}, @var{filename}) |
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24 ## @deftypefnx {Function File} {} imwrite (@dots{}, @var{param1}, @var{val1}, @dots{}) |
| 7987 | 25 ## Write images in various file formats. |
| 26 ## | |
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27 ## The image @var{img} can be a binary, grayscale, RGB, or multi-dimensional |
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28 ## image. The size and class of @var{img} should be the same as what should |
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29 ## be expected when reading it with @code{imread}: the 3rd and 4th dimensions |
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30 ## reserved for color space, and multiple pages respectively. If it's an |
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31 ## indexed image, the colormap @var{map} must also be specified. |
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32 ## |
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33 ## If @var{ext} is not supplied, the file extension of @var{filename} is used |
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34 ## to determine the format. The actual supported formats are dependent on |
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35 ## options made during the build of Octave. Use @code{imformats} to check |
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36 ## the support of the different image formats. |
| 7987 | 37 ## |
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38 ## Depending on the file format, it is possible to configure the writing |
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39 ## of images with @var{param}, @var{val} pairs. The following options |
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40 ## are supported: |
| 8148 | 41 ## |
| 42 ## @table @samp | |
| 43 ## @item Quality | |
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44 ## Set the quality of the compression. The value should be an |
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45 ## integer between 0 and 100, with larger values indicating higher visual |
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46 ## quality and lower compression. Defaults to 75. |
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47 ## |
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48 ## @item WriteMode |
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49 ## Some file formats, such as TIFF and GIF, are able to store multiple |
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50 ## images in a single file. This option specifies if @var{img} should be |
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51 ## appended to the file (if it exists) or if a new file should be created |
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52 ## for it (possibly overwriting an existing file). The value should be |
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53 ## the string @qcode{"Overwrite"} (default), or @qcode{"Append"}. |
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54 ## |
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55 ## Despite this option, the most efficient method of writing a multipage |
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56 ## image is to pass a 4 dimensional @var{img} to @code{imwrite}, the |
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57 ## same matrix that could be expected when using @code{imread} with the |
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58 ## option @qcode{"Index"} set to @qcode{"all"}. |
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59 ## |
| 8148 | 60 ## @end table |
| 61 ## | |
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62 ## @seealso{imread, imfinfo, imformats} |
| 7987 | 63 ## @end deftypefn |
| 64 | |
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65 function imwrite (varargin) |
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66 if (nargin < 2) |
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67 print_usage (); |
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68 endif |
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69 [filename, ext] = imwrite_filename (varargin{2:end}); |
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70 |
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71 fmt = imformats (ext); |
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72 ## When there is no match, fmt will be a 1x1 structure with |
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73 ## no fields, so we can't just use `isempty (fmt)'. |
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74 if (isempty (fieldnames (fmt))) |
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75 if (isempty (ext)) |
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76 error ("imwrite: no extension found for %s to identify the image format", |
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77 filename); |
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78 endif |
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79 warning ("imwrite: unlisted image format %s (see imformats). Trying to save anyway.", |
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80 ext); |
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81 __imwrite__ (varargin{:}); |
| 7987 | 82 else |
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83 fmt.write (varargin{:}); |
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1b3b3ee88284
Add optional extension argument to image IO functions.
Carnë Draug <carandraug@octave.org>
parents:
16916
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changeset
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84 endif |
| 7987 | 85 |
| 86 endfunction | |
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10891
ff94219746bd
imwrite.m: Allow writing of 1-bit (B&W) images.
Rik <octave@nomad.inbox5.com>
parents:
10793
diff
changeset
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87 |
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ff94219746bd
imwrite.m: Allow writing of 1-bit (B&W) images.
Rik <octave@nomad.inbox5.com>
parents:
10793
diff
changeset
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88 %% Test input validation |
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14363
f3d52523cde1
Use Octave coding conventions in all m-file %!test blocks
Rik <octave@nomad.inbox5.com>
parents:
14138
diff
changeset
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89 %!error imwrite () # Wrong # of args |
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f3d52523cde1
Use Octave coding conventions in all m-file %!test blocks
Rik <octave@nomad.inbox5.com>
parents:
14138
diff
changeset
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90 %!error imwrite (1) # Wrong # of args |
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f3d52523cde1
Use Octave coding conventions in all m-file %!test blocks
Rik <octave@nomad.inbox5.com>
parents:
14138
diff
changeset
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91 %!error imwrite ({"cell"}, "filename.jpg") # Wrong class for img |
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f3d52523cde1
Use Octave coding conventions in all m-file %!test blocks
Rik <octave@nomad.inbox5.com>
parents:
14138
diff
changeset
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92 %!error imwrite (1, [], "filename.jpg") # Empty image map |
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f3d52523cde1
Use Octave coding conventions in all m-file %!test blocks
Rik <octave@nomad.inbox5.com>
parents:
14138
diff
changeset
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93 %!error imwrite (1, 2, 3) # No filename specified |
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f3d52523cde1
Use Octave coding conventions in all m-file %!test blocks
Rik <octave@nomad.inbox5.com>
parents:
14138
diff
changeset
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94 %!error imwrite (1, "filename") # No fmt specified |
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f3d52523cde1
Use Octave coding conventions in all m-file %!test blocks
Rik <octave@nomad.inbox5.com>
parents:
14138
diff
changeset
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95 %!error imwrite (1, "filename", "junk") # Invalid fmt specified |
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f3d52523cde1
Use Octave coding conventions in all m-file %!test blocks
Rik <octave@nomad.inbox5.com>
parents:
14138
diff
changeset
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96 %!error imwrite ([], "filename.jpg") # Empty img matrix |
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f3d52523cde1
Use Octave coding conventions in all m-file %!test blocks
Rik <octave@nomad.inbox5.com>
parents:
14138
diff
changeset
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97 %!error imwrite (spones (2), "filename.jpg") # Invalid sparse img |
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10891
ff94219746bd
imwrite.m: Allow writing of 1-bit (B&W) images.
Rik <octave@nomad.inbox5.com>
parents:
10793
diff
changeset
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98 |
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17267
27800ef1f7d2
imwrite: add simple test for actual successfully writing
Carnë Draug <carandraug@octave.org>
parents:
17171
diff
changeset
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99 %!testif HAVE_MAGICK |
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27800ef1f7d2
imwrite: add simple test for actual successfully writing
Carnë Draug <carandraug@octave.org>
parents:
17171
diff
changeset
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100 %! imw = randi (255, 100, "uint8"); |
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27800ef1f7d2
imwrite: add simple test for actual successfully writing
Carnë Draug <carandraug@octave.org>
parents:
17171
diff
changeset
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101 %! filename = [tmpnam() ".png"]; |
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27800ef1f7d2
imwrite: add simple test for actual successfully writing
Carnë Draug <carandraug@octave.org>
parents:
17171
diff
changeset
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102 %! unwind_protect |
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27800ef1f7d2
imwrite: add simple test for actual successfully writing
Carnë Draug <carandraug@octave.org>
parents:
17171
diff
changeset
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103 %! imwrite (imw, filename); |
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27800ef1f7d2
imwrite: add simple test for actual successfully writing
Carnë Draug <carandraug@octave.org>
parents:
17171
diff
changeset
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104 %! imr = imread (filename); |
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27800ef1f7d2
imwrite: add simple test for actual successfully writing
Carnë Draug <carandraug@octave.org>
parents:
17171
diff
changeset
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105 %! unwind_protect_cleanup |
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27800ef1f7d2
imwrite: add simple test for actual successfully writing
Carnë Draug <carandraug@octave.org>
parents:
17171
diff
changeset
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106 %! unlink (filename); |
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27800ef1f7d2
imwrite: add simple test for actual successfully writing
Carnë Draug <carandraug@octave.org>
parents:
17171
diff
changeset
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107 %! end_unwind_protect |
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27800ef1f7d2
imwrite: add simple test for actual successfully writing
Carnë Draug <carandraug@octave.org>
parents:
17171
diff
changeset
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108 %! assert (imw, imr) |