Mercurial > octave
view scripts/plot/draw/plot.m @ 21580:ecce63c99c3f
maint: Add semicolons to terminate code in %! blocks.
* splineimages.m, Cell.cc, bsxfun.cc, cellfun.cc, conv2.cc, data.cc,
debug.cc, file-io.cc, gcd.cc, getrusage.cc, graphics.cc, kron.cc, mappers.cc,
oct-map.cc, ordschur.cc, psi.cc, rand.cc, variables.cc, __osmesa_print__.cc,
amd.cc, audiodevinfo.cc, dmperm.cc, qr.cc, ov-bool-mat.cc, ov-class.cc,
ov-fcn-handle.cc, ov-java.cc, oct-parse.in.yy, bicubic.m, delaunay3.m,
accumarray.m, flip.m, fliplr.m, flipud.m, gradient.m, inputParser.m, interp1.m,
narginchk.m, rot90.m, validateattributes.m, delaunay.m, delaunayn.m,
griddata3.m, inpolygon.m, waitbar.m, gray2ind.m, hsv2rgb.m, im2double.m,
image.m, imformats.m, imread.m, imshow.m, imwrite.m, ntsc2rgb.m, rgb2hsv.m,
rgb2ntsc.m, isbanded.m, onenormest.m, edit.m, fullfile.m, license.m, ode23.m,
ode45.m, glpk.m, annotation.m, legend.m, orient.m, text.m, area.m, barh.m,
contour.m, line.m, plot.m, plot3.m, plotyy.m, quiver.m, stem.m, clf.m,
copyobj.m, findobj.m, subplot.m, ppval.m, splinefit.m, ismember.m, freqz.m,
unwrap.m, eigs.m, ichol.m, pcg.m, spdiags.m, svds.m, magic.m, lscov.m,
median.m, ols.m, dec2base.m, strsplit.m, strtok.m, test.m, bug-31371.tst,
bug-36025.tst, bug-44940.tst, build-sparse-tests.sh, class-concat.tst,
classdef.tst, classes.tst, colormaps.tst, command.tst, ctor-vs-method.tst,
error.tst, fcn-handle-derived-resolution.tst, for.tst, index.tst, io.tst,
jit.tst, null-assign.tst, parser.tst, struct.tst, system.tst:
Add semicolons to terminate code in %! blocks.
author | Rik <rik@octave.org> |
---|---|
date | Fri, 01 Apr 2016 16:03:29 -0700 |
parents | 516bb87ea72e |
children | 1c4cd12987f5 |
line wrap: on
line source
## Copyright (C) 1993-2015 John W. Eaton ## ## 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 {} {} plot (@var{y}) ## @deftypefnx {} {} plot (@var{x}, @var{y}) ## @deftypefnx {} {} plot (@var{x}, @var{y}, @var{fmt}) ## @deftypefnx {} {} plot (@dots{}, @var{property}, @var{value}, @dots{}) ## @deftypefnx {} {} plot (@var{x1}, @var{y1}, @dots{}, @var{xn}, @var{yn}) ## @deftypefnx {} {} plot (@var{hax}, @dots{}) ## @deftypefnx {} {@var{h} =} plot (@dots{}) ## Produce 2-D plots. ## ## Many different combinations of arguments are possible. The simplest ## form is ## ## @example ## plot (@var{y}) ## @end example ## ## @noindent ## where the argument is taken as the set of @var{y} coordinates and the ## @var{x} coordinates are taken to be the range @code{1:numel (@var{y})}. ## ## If more than one argument is given, they are interpreted as ## ## @example ## plot (@var{y}, @var{property}, @var{value}, @dots{}) ## @end example ## ## @noindent ## or ## ## @example ## plot (@var{x}, @var{y}, @var{property}, @var{value}, @dots{}) ## @end example ## ## @noindent ## or ## ## @example ## plot (@var{x}, @var{y}, @var{fmt}, @dots{}) ## @end example ## ## @noindent ## and so on. Any number of argument sets may appear. The @var{x} and ## @var{y} values are interpreted as follows: ## ## @itemize @bullet ## @item ## If a single data argument is supplied, it is taken as the set of @var{y} ## coordinates and the @var{x} coordinates are taken to be the indices of ## the elements, starting with 1. ## ## @item ## If @var{x} and @var{y} are scalars, a single point is plotted. ## ## @item ## @code{squeeze()} is applied to arguments with more than two dimensions, ## but no more than two singleton dimensions. ## ## @item ## If both arguments are vectors, the elements of @var{y} are plotted versus ## the elements of @var{x}. ## ## @item ## If @var{x} is a vector and @var{y} is a matrix, then ## the columns (or rows) of @var{y} are plotted versus @var{x}. ## (using whichever combination matches, with columns tried first.) ## ## @item ## If the @var{x} is a matrix and @var{y} is a vector, ## @var{y} is plotted versus the columns (or rows) of @var{x}. ## (using whichever combination matches, with columns tried first.) ## ## @item ## If both arguments are matrices, the columns of @var{y} are plotted ## versus the columns of @var{x}. In this case, both matrices must have ## the same number of rows and columns and no attempt is made to transpose ## the arguments to make the number of rows match. ## @end itemize ## ## Multiple property-value pairs may be specified, but they must appear ## in pairs. These arguments are applied to the line objects drawn by ## @code{plot}. Useful properties to modify are @qcode{"linestyle"}, ## @qcode{"linewidth"}, @qcode{"color"}, @qcode{"marker"}, ## @qcode{"markersize"}, @qcode{"markeredgecolor"}, @qcode{"markerfacecolor"}. ## @xref{Line Properties}. ## ## The @var{fmt} format argument can also be used to control the plot style. ## It is a string composed of four optional parts: ## "<linestyle><marker><color><;displayname;>". ## When a marker is specified, but no linestyle, only the markers are ## plotted. Similarly, if a linestyle is specified, but no marker, then ## only lines are drawn. If both are specified then lines and markers will ## be plotted. If no @var{fmt} and no @var{property}/@var{value} pairs are ## given, then the default plot style is solid lines with no markers and the ## color determined by the @qcode{"colororder"} property of the current axes. ## ## Format arguments: ## ## @table @asis ## @item linestyle ## ## @multitable @columnfractions 0.06 0.94 ## @item @samp{-} @tab Use solid lines (default). ## @item @samp{--} @tab Use dashed lines. ## @item @samp{:} @tab Use dotted lines. ## @item @samp{-.} @tab Use dash-dotted lines. ## @end multitable ## ## @item marker ## ## @multitable @columnfractions 0.06 0.94 ## @item @samp{+} @tab crosshair ## @item @samp{o} @tab circle ## @item @samp{*} @tab star ## @item @samp{.} @tab point ## @item @samp{x} @tab cross ## @item @samp{s} @tab square ## @item @samp{d} @tab diamond ## @item @samp{^} @tab upward-facing triangle ## @item @samp{v} @tab downward-facing triangle ## @item @samp{>} @tab right-facing triangle ## @item @samp{<} @tab left-facing triangle ## @item @samp{p} @tab pentagram ## @item @samp{h} @tab hexagram ## @end multitable ## ## @item color ## ## @multitable @columnfractions 0.06 0.94 ## @item @samp{k} @tab blacK ## @item @samp{r} @tab Red ## @item @samp{g} @tab Green ## @item @samp{b} @tab Blue ## @item @samp{m} @tab Magenta ## @item @samp{c} @tab Cyan ## @item @samp{w} @tab White ## @end multitable ## ## @item @qcode{";displayname;"} ## Here @qcode{"displayname"} is the label to use for the plot legend. ## @end table ## ## The @var{fmt} argument may also be used to assign legend labels. ## To do so, include the desired label between semicolons after the ## formatting sequence described above, e.g., @qcode{"+b;Key Title;"}. ## Note that the last semicolon is required and Octave will generate ## an error if it is left out. ## ## Here are some plot examples: ## ## @example ## plot (x, y, "or", x, y2, x, y3, "m", x, y4, "+") ## @end example ## ## This command will plot @code{y} with red circles, @code{y2} with solid ## lines, @code{y3} with solid magenta lines, and @code{y4} with points ## displayed as @samp{+}. ## ## @example ## plot (b, "*", "markersize", 10) ## @end example ## ## This command will plot the data in the variable @code{b}, ## with points displayed as @samp{*} and a marker size of 10. ## ## @example ## @group ## t = 0:0.1:6.3; ## plot (t, cos(t), "-;cos(t);", t, sin(t), "-b;sin(t);"); ## @end group ## @end example ## ## This will plot the cosine and sine functions and label them accordingly ## in the legend. ## ## If the first argument @var{hax} is an axes handle, then plot into this axis, ## rather than the current axes returned by @code{gca}. ## ## The optional return value @var{h} is a vector of graphics handles to ## the created line objects. ## ## To save a plot, in one of several image formats such as PostScript ## or PNG, use the @code{print} command. ## ## @seealso{axis, box, grid, hold, legend, title, xlabel, ylabel, xlim, ylim, ezplot, errorbar, fplot, line, plot3, polar, loglog, semilogx, semilogy, subplot} ## @end deftypefn ## Author: jwe function h = plot (varargin) [hax, varargin, nargs] = __plt_get_axis_arg__ ("plot", varargin{:}); if (nargs < 1) print_usage (); endif oldfig = []; if (! isempty (hax)) oldfig = get (0, "currentfigure"); endif unwind_protect hax = newplot (hax); htmp = __plt__ ("plot", hax, varargin{:}); unwind_protect_cleanup if (! isempty (oldfig)) set (0, "currentfigure", oldfig); endif end_unwind_protect if (nargout > 0) h = htmp; endif endfunction %!demo %! x = 1:5; y = 1:5; %! plot (x,y,'g'); %! title ('plot() of green line at 45 degrees'); %!demo %! x = 1:5; y = 1:5; %! plot (x,y,'g*'); %! title ('plot() of green stars along a line at 45 degrees'); %!demo %! x1 = 1:5; y1 = 1:5; %! x2 = 5:9; y2 = 5:-1:1; %! plot (x1,y1,'bo-', x2,y2,'rs-'); %! axis ('tight'); %! title ({'plot() of blue circles ascending and red squares descending'; %! 'connecting lines drawn'}); %!demo %! x = 0:10; %! plot (x, rand (numel (x), 3)); %! axis ([0 10 0 1]); %! title ({'Three random variables', 'x[1x11], y[11x3]'}); %!demo %! x = 0:10; %! plot (x, rand (3, numel (x))); %! axis ([0 10 0 1]); %! title ({'Three random variables', 'x[1x11], y[3x11]'}); %!demo %! x = 0:10; %! plot (repmat (x, 2, 1), rand (2, numel (x)), '-s'); %! axis ([0 10 0 1]); %! title ({'Vertical lines with random height and lengths', ... %! 'x[2x11], y[2,11]'}) %!demo %! x = 0:10; %! plot (repmat (x(:), 1, 2), rand (numel (x), 2)); %! axis ([0 10 0 1]); %! title ({'Two random variables', 'x[11x2], y[11x2]'}); %!demo %! x = 0:10; %! shape = [1, 1, numel(x), 2]; %! x = reshape (repmat (x(:), 1, 2), shape); %! y = rand (shape); %! plot (x, y); %! axis ([0 10 0 1]); %! title ({'Two random variables', 'squeezed from 4-d arrays'});