Mercurial > octave-nkf
view scripts/io/importdata.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 | 8d7e760bfa68 |
children | 0e1f5a750d00 |
line wrap: on
line source
## Copyright (C) 2012-2013 Erik Kjellson ## ## 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{A} =} importdata (@var{fname}) ## @deftypefnx {Function File} {@var{A} =} importdata (@var{fname}, @var{delimiter}) ## @deftypefnx {Function File} {@var{A} =} importdata (@var{fname}, @var{delimiter}, @var{header_rows}) ## @deftypefnx {Function File} {[@var{A}, @var{delimiter}] =} importdata (@dots{}) ## @deftypefnx {Function File} {[@var{A}, @var{delimiter}, @var{header_rows}] =} importdata (@dots{}) ## Import data from the file @var{fname}. ## ## Input parameters: ## ## @itemize ## @item @var{fname} ## The name of the file containing data. ## ## @item @var{delimiter} ## The character separating columns of data. Use @code{\t} for tab. ## (Only valid for ASCII files) ## ## @item @var{header_rows} ## The number of header rows before the data begins. (Only valid for ASCII ## files) ## @end itemize ## ## Different file types are supported: ## ## @itemize ## @item ASCII table ## ## Import ASCII table using the specified number of header rows and ## the specified delimiter. ## ## @item Image file ## ## @item @sc{matlab} file ## ## @item Spreadsheet files (depending on external software) ## ## @item WAV file ## ## @end itemize ## ## @seealso{textscan, dlmread, csvread, load} ## @end deftypefn ## Author: Erik Kjellson <erikiiofph7@users.sourceforge.net> function [output, delimiter, header_rows] = importdata (fname, delimiter = "", header_rows = -1) if (nargin < 1 || nargin > 3) print_usage (); endif if (! ischar (fname)) error ("importdata: FNAME must be a string"); elseif (strcmpi (fname, "-pastespecial")) error ("importdata: option -pastespecial not implemented"); endif if (nargin > 1) if (! ischar (delimiter) || (length (delimiter) > 1 && ! strcmp (delimiter, '\t'))) error("importdata: DELIMITER must be a single character"); endif if (strcmp (delimiter, '\t')) delimiter = "\t"; endif endif if (nargin > 2) if (! isnumeric (header_rows) || header_rows < 0 || header_rows != fix (header_rows)) error ("importdata: HEADER_ROWS must be an integer >= 0"); endif endif ## Check file format ## Get the extension from the file name. [~, ~, ext, ~] = fileparts (fname); ext = lower (ext); switch (ext) case {".au", ".snd", ".flac", ".ogg"} error ("importdata: not implemented for file format %s", ext); case {".avi", ".mj2", ".mpg", ".asf", ".asx", ".wmv", ".mp4", ".m4v", ... ".mov"} error ("importdata: not implemented for file format %s", ext); case {".bmp", ".cur", ".gif", ".hdf", ".ico", ".jpe", ".jpeg", ".jpg", ... ".jp2", ".jpf", ".jpx", ".j2c", ".j2k", ".pbm", ".pcx", ".pgm", ... ".png", ".pnm", ".ppm", ".ras", ".tif", ".tiff", ".xwd"} delimiter = NaN; header_rows = 0; [output.cdata, output.colormap, output.alpha] = imread (fname); case ".mat" delimiter = NaN; header_rows = 0; output = load (fname); case {".xls", ".xlsx", ".wk1", ".dbf", ".pxl"} ## If there's no Excel file support simply fall back to unimplemented.m output = xlsread (fname); case {".ods", ".sxc", ".fods", ".uos", ".xml"} ## unimplemented.m only knows ML functions; odsread isn't one but is in OF try output = odsread (fname); catch ## Fall back to unimplemented.m. output = xlsread (fname); end_try_catch case {".wav", ".wave"} delimiter = NaN; header_rows = 0; [output.data, output.fs] = wavread (fname); otherwise ## Assume the file is in ASCII format. [output, delimiter, header_rows] = ... importdata_ascii (fname, delimiter, header_rows); endswitch ## If there are any empty fields in the output structure, then remove them if (isstruct (output) && numel (output) == 1) fields = fieldnames (output); for i=1:length (fields) if (isempty (output.(fields{i}))) output = rmfield (output, fields{i}); endif endfor ## If only one field is left, replace the structure with the field, ## i.e., output = output.onlyFieldLeft ## Update the list of fields fields = fieldnames (output); if (numel (fields) == 1) output = output.(fields{1}); endif endif endfunction function [output, delimiter, header_rows] = importdata_ascii (fname, delimiter, num_header_rows) ## Define fields in the output structure so that the order will be correct. output.data = []; output.textdata = {}; output.rowheaders = {}; output.colheaders = {}; [fid, msg] = fopen (fname, "r"); if (fid == -1) error (msg); endif header_rows = 0; header_cols = 0; ## Work through first few rows line by line until a delimiter is found. while (ischar (row = fgetl (fid))) ## If no delimiter determined yet, make a guess. if (isempty (delimiter)) ## This pattern can be fooled, but mostly does the job just fine. delim = regexpi (row, '[-+\d.e*ij ]+([^-+\de.ij])[-+\de*.ij ]', 'tokens', 'once'); #delim = regexp (row, '[+-\d.eE\*ij ]+([^+-\d.ij])[+-\d.ij]', # 'tokens', 'once'); if (! isempty (delim)) delimiter = delim{1}; endif endif if (delimiter == " ") row_entries = regexp (strtrim (row), ' +', 'split'); else row_entries = ostrsplit (row, delimiter); endif row_data = str2double (row_entries); if (all (isnan (row_data)) || header_rows < num_header_rows) header_rows++; output.textdata{end+1, 1} = row; else if (! isempty (output.textdata)) if (delimiter == " ") output.colheaders = regexp (strtrim (output.textdata{end}), ' +', 'split'); else output.colheaders = ostrsplit (output.textdata{end}, delimiter); endif endif header_cols = find (! isnan (row_data), 1) - 1; ## The number of header rows and header columns is now known. break; endif endwhile fclose (fid); if (row == -1) error ("importdata: Unable to determine delimiter"); endif if (num_header_rows >= 0) header_rows = num_header_rows; endif ## Now, let the efficient built-in routine do the bulk of the work. if (delimiter == " ") output.data = dlmread (fname, "", header_rows, header_cols, "emptyvalue", NA); else output.data = dlmread (fname, delimiter, header_rows, header_cols, "emptyvalue", NA); endif ## Go back and correct any individual values that did not convert. na_idx = isna (output.data); if (header_cols > 0) na_idx = [(true (rows (na_idx), header_cols)), na_idx]; endif if (any (na_idx(:))) file_content = ostrsplit (fileread (fname), "\n"); na_rows = find (any (na_idx, 2)); for ridx = na_rows(:)' row = file_content{ridx+header_rows}; if (delimiter == " ") fields = regexp (strtrim (row), ' +', 'split'); else fields = ostrsplit (row, delimiter); endif text = fields(na_idx(ridx,:)); text = text(! strcmpi (text, "NA")); # Remove valid "NA" entries if (! isempty (text)) output.textdata(end+1:end+numel (text), 1) = text; endif if (header_cols) output.rowheaders(end+1, :) = fields(1:header_cols); endif endfor endif ## Final cleanup to satisfy output configuration if (all (cellfun ("isempty", output.textdata))) output = output.data; elseif (! isempty (output.rowheaders) && ! isempty (output.colheaders)) output = struct ("data", {output.data}, "textdata", {output.textdata}); endif endfunction %!test %! ## Comma separated values %! A = [3.1 -7.2 0; 0.012 6.5 128]; %! fn = tmpnam (); %! fid = fopen (fn, "w"); %! fputs (fid, "3.1,-7.2,0\n0.012,6.5,128"); %! fclose (fid); %! [a1,d1,h1] = importdata (fn, ","); %! [a2,d2,h2] = importdata (fn); %! unlink (fn); %! assert (a1, A); %! assert (d1, ","); %! assert (h1, 0); %! assert (a2, A); %! assert (d2, ","); %! assert (h2, 0); %!test %! ## Tab separated values %! A = [3.1 -7.2 0; 0.012 6.5 128]; %! fn = tmpnam (); %! fid = fopen (fn, "w"); %! fputs (fid, "3.1\t-7.2\t0\n0.012\t6.5\t128"); %! fclose (fid); %! [a1,d1,h1] = importdata (fn, "\t"); %! [a2,d2,h2] = importdata (fn); %! unlink (fn); %! assert (a1, A); %! assert (d1, "\t"); %! assert (h1, 0); %! assert (a2, A); %! assert (d2, "\t"); %! assert (h2, 0); %!test %! ## Space separated values, using multiple spaces to align in columns. %! A = [3.1 -7.2 0; 0.012 6.5 128]; %! fn = tmpnam (); %! fid = fopen (fn, "w"); %! fprintf (fid, "%10.3f %10.3f %10.3f\n", A'); %! fclose (fid); %! [a1,d1,h1] = importdata (fn, " "); %! [a2,d2,h2] = importdata (fn); %! unlink (fn); %! assert (a1, A); %! assert (d1, " "); %! assert (h1, 0); %! assert (a2, A); %! assert (d2, " "); %! assert (h2, 0); %!test %! ## No separator, 1 column of data only %! A = [3.1;-7.2;0;0.012;6.5;128]; %! fn = tmpnam (); %! fid = fopen (fn, "w"); %! fprintf (fid, "%f\n", A); %! fclose (fid); %! [a1,d1,h1] = importdata (fn, ""); %! [a2,d2,h2] = importdata (fn); %! unlink (fn); %! assert (a1, A); %! assert (d1, ""); %! assert (h1, 0); %! assert (a2, A); %! assert (d2, ""); %! assert (h2, 0); %!test %! ## Header text %! A.data = [3.1 -7.2 0; 0.012 6.5 128]; %! A.textdata = {"This is a header row."; ... %! "this row does not contain any data, but the next one does."}; %! A.colheaders = A.textdata (2); %! fn = tmpnam (); %! fid = fopen (fn, "w"); %! fprintf (fid, "%s\n", A.textdata{:}); %! fputs (fid, "3.1\t-7.2\t0\n0.012\t6.5\t128"); %! fclose (fid); %! [a,d,h] = importdata (fn, '\t'); %! unlink (fn); %! assert (a, A); %! assert (d, "\t"); %! assert (h, 2); %!test %! ## Column headers, only last row is returned in colheaders %! A.data = [3.1 -7.2 0; 0.012 6.5 128]; %! A.textdata = {"Label1\tLabel2\tLabel3"; %! "col 1\tcol 2\tcol 3"}; %! A.colheaders = {"col 1", "col 2", "col 3"}; %! fn = tmpnam (); %! fid = fopen (fn, "w"); %! fprintf (fid, "%s\n", A.textdata{:}); %! fputs (fid, "3.1\t-7.2\t0\n0.012\t6.5\t128"); %! fclose (fid); %! [a,d,h] = importdata (fn, '\t'); %! unlink (fn); %! assert (a, A); %! assert (d, "\t"); %! assert (h, 2); %!test %! ## Row headers %! A.data = [3.1 -7.2 0; 0.012 6.5 128]; %! A.textdata = {"row1"; "row2"}; %! A.rowheaders = A.textdata; %! fn = tmpnam (); %! fid = fopen (fn, "w"); %! fputs (fid, "row1\t3.1\t-7.2\t0\nrow2\t0.012\t6.5\t128"); %! fclose (fid); %! [a,d,h] = importdata (fn, '\t'); %! unlink (fn); %! assert (a, A); %! assert (d, "\t"); %! assert (h, 0); %!test %! ## Row/Column headers and Header Text %! A.data = [3.1 -7.2 0; 0.012 6.5 128]; %! A.textdata = {"This is introductory header text" %! " col1 col2 col3" %! "row1" %! "row2"}; %! fn = tmpnam (); %! fid = fopen (fn, "w"); %! fprintf (fid, "%s\n", A.textdata{1:2}); %! fputs (fid, "row1\t3.1\t-7.2\t0\nrow2\t0.012\t6.5\t128"); %! fclose (fid); %! [a,d,h] = importdata (fn, '\t'); %! unlink (fn); %! assert (a, A); %! assert (d, "\t"); %! assert (h, 2); %!test %! ## Ignore empty rows containing only spaces %! A = [3.1 -7.2 0; 0.012 6.5 128]; %! fn = tmpnam (); %! fid = fopen (fn, "w"); %! fprintf (fid, "%10.3f %10.3f %10.3f\n", A(1,:)); %! fputs (fid, " "); %! fprintf (fid, "%10.3f %10.3f %10.3f\n", A(2,:)); %! fclose (fid); %! [a,d,h] = importdata (fn, " "); %! unlink (fn); %! assert (a, A); %! assert (d, " "); %! assert (h, 0); %!test %! ## Exponentials %! A = [3.1 -7.2 0; 0.012 6.5 128]; %! fn = tmpnam (); %! fid = fopen (fn, "w"); %! fputs (fid, "+3.1e0\t-72E-1\t0\n12e-3\t6.5\t128"); %! fclose (fid); %! [a,d,h] = importdata (fn, '\t'); %! unlink (fn); %! assert (a, A); %! assert (d, "\t"); %! assert (h, 0); %!test %! ## Complex numbers %! A = [3.1 -7.2 0-3.4i; 0.012 -6.5+7.2i 128]; %! fn = tmpnam (); %! fid = fopen (fn, "w"); %! fputs (fid, "3.1\t-7.2\t0-3.4i\n0.012\t-6.5+7.2i\t128"); %! fclose (fid); %! [a,d,h] = importdata (fn, '\t'); %! unlink (fn); %! assert (a, A); %! assert (d, "\t"); %! assert (h, 0); %!test %! ## Exceptional values (Inf, NaN, NA) %! A = [3.1 Inf NA; -Inf NaN 128]; %! fn = tmpnam (); %! fid = fopen (fn, "w"); %! fputs (fid, "3.1\tInf\tNA\n-Inf\tNaN\t128"); %! fclose (fid); %! [a,d,h] = importdata (fn, '\t'); %! unlink (fn); %! assert (a, A); %! assert (d, "\t"); %! assert (h, 0); %!test %! ## Missing values and Text Values %! A.data = [3.1 NA 0; 0.012 NA 128]; %! A.textdata = {char(zeros(1,0)) %! "NO DATA"}; %! fn = tmpnam (); %! fid = fopen (fn, "w"); %! fputs (fid, "3.1\t\t0\n0.012\tNO DATA\t128"); %! fclose (fid); %! [a,d,h] = importdata (fn, '\t'); %! unlink (fn); %! assert (a, A); %! assert (d, "\t"); %! assert (h, 0); %!#test %! ## CRLF for line breaks %! A = [3.1 -7.2 0; 0.012 6.5 128]; %! fn = tmpnam (); %! fid = fopen (fn, "w"); %! fputs (fid, "3.1\t-7.2\t0\r\n0.012\t6.5\t128"); %! fclose (fid); %! [a,d,h] = importdata (fn, '\t'); %! unlink (fn); %! assert (a, A); %! assert (d, "\t"); %! assert (h, 0); %!#test %! ## CR for line breaks %! A = [3.1 -7.2 0; 0.012 6.5 128]; %! fn = tmpnam (); %! fid = fopen (fn, "w"); %! fputs (fid, "3.1\t-7.2\t0\r0.012\t6.5\t128"); %! fclose (fid); %! [a,d,h] = importdata (fn, '\t'); %! unlink (fn); %! assert (a, A); %! assert (d, "\t"); %! assert (h, 0); %!test %! ## Distinguish double from complex when no delimiter is supplied (bug #43393) %! fn = tmpnam (); %! fid = fopen (fn, "w"); %! fputs (fid, "2.0000e+02 4.0000e-04"); %! fclose (fid); %! [a, d, h] = importdata (fn); %! unlink (fn); %! assert (a, [2e2, 4e-4]); %! assert (d, " "); %! assert (h, 0); %!error importdata () %!error importdata (1,2,3,4) %!error <FNAME must be a string> importdata (1) %!error <option -pastespecial not implemented> importdata ("-pastespecial") %!error <DELIMITER must be a single character> importdata ("foo", 1) %!error <DELIMITER must be a single character> importdata ("foo", "ab") %!error <HEADER_ROWS must be an integer> importdata ("foo", " ", "1") %!error <HEADER_ROWS must be an integer> importdata ("foo", " ", 1.5) %!error <not implemented for file format .au> importdata ("foo.au") %!error <not implemented for file format .avi> importdata ("foo.avi")