博文
输出 Matlab 图形的一个方法
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经常看到有些人用 Matlab 画图后保存为 EPS 格式或者 PNG 格式的图时字体太小。不太美观。
这里把我常用的比较好方法和大家分享一下，也给自己和学生留个印记。
附件的 exportfig.m 程序可以很好地把 Matlab 画的图输出为很多格式的文件，并且可以设置字体的大小，颜色等，
使用方便灵活。
用法很简单， 把这个文件放在 Matlab 的搜索目录中（最简单就是当前的工作目录）。
然后：
fig=figure(1); % 定义一个 fig 的图形句柄
..
.. % 这里用 plot 等函数画图
..
exportfig(fig, 'fig2.eps', 'FontMode', 'fixed','FontSize', 10, 'color', 'cmyk' ); % 把上面画的图（句柄为 fig ）保存为 fig2.eps, 字号为 10，彩色。
运行以后就可以在当前目录看到一个名为 fig2.eps 的文件了。
这个 exportfig() 函数含有很多选项可以灵活设置，详看下面的说明：
%EXPORTFIG Export a figure to Encapsulated Postscript.
% EXPORTFIG(H, FILENAME) writes the figure H to FILENAME. H is
% a figure handle and FILENAME is a string that specifies the
% name of the output file.
%
% EXPORTFIG(...,PARAM1,VAL1,PARAM2,VAL2,...) specifies
% parameters that control various characteristics of the output
% file.
%
% Format Paramter:
% 'Format' one of the strings 'eps','eps2','jpeg','png','preview'
% specifies the output format. Defaults to 'eps'.
% The output format 'preview' does not generate an output
% file but instead creates a new figure window with a
% preview of the exported figure. In this case the
% FILENAME parameter is ignored.
%
% 'Preview' one of the strings 'none', 'tiff'
% specifies a preview for EPS files. Defaults to 'none'.
%
% Size Parameters:
% 'Width' a positive scalar
% specifies the width in the figure's PaperUnits
% 'Height' a positive scalar
% specifies the height in the figure's PaperUnits
%
% Specifying only one dimension sets the other dimension
% so that the exported aspect ratio is the same as the
% figure's current aspect ratio.
% If neither dimension is specified the size defaults to
% the width and height from the figure's PaperPosition.
%
% Rendering Parameters:
% 'Color' one of the strings 'bw', 'gray', 'cmyk'
% 'bw' specifies that lines and text are exported in
% black and all other objects in grayscale
% 'gray' specifies that all objects are exported in grayscale
% 'cmyk' specifies that all objects are exported in color
% using the CMYK color space
% 'Renderer' one of the strings 'painters', 'zbuffer', 'opengl'
% specifies the renderer to use
% 'Resolution' a positive scalar
% specifies the resolution in dots-per-inch.
%
% The default color setting is 'bw'.
%
% Font Parameters:
% 'FontMode' one of the strings 'scaled', 'fixed'
% 'FontSize' a positive scalar
% in 'scaled' mode multiplies with the font size of each
% text object to obtain the exported font size
% in 'fixed' mode specifies the font size of all text
% objects in points
% 'FontEncoding' one of the strings 'latin1', 'adobe'
% specifies the character encoding of the font
%
% If FontMode is 'scaled' but FontSize is not specified then a
% scaling factor is computed from the ratio of the size of the
% exported figure to the size of the actual figure. The minimum
% font size allowed after scaling is 5 points.
% If FontMode is 'fixed' but FontSize is not specified then the
% exported font sizes of all text objects is 7 points.
%
% The default 'FontMode' setting is 'scaled'.
%
% Line Width Parameters:
% 'LineMode' one of the strings 'scaled', 'fixed'
% 'LineWidth' a positive scalar
% the semantics of LineMode and LineWidth are exactly the
% same as FontMode and FontSize, except that they apply
% to line widths instead of font sizes. The minumum line
% width allowed after scaling is 0.5 points.
% If LineMode is 'fixed' but LineWidth is not specified
% then the exported line width of all line objects is 1
% point.
%
% Examples:
% exportfig(gcf,'fig1.eps','height',3);
% Exports the current figure to the file named 'fig1.eps' with
% a height of 3 inches (assuming the figure's PaperUnits is
% inches) and an aspect ratio the same as the figure's aspect
% ratio on screen.
%
% exportfig(gcf, 'fig2.eps', 'FontMode', 'fixed',...
% 'FontSize', 10, 'color', 'cmyk' );
% Exports the current figure to 'fig2.eps' in color with all
% text in 10 point fonts. The size of the exported figure is
% the figure's PaperPostion width and height.
特别声明，这个程序不是我编的，我只是用了感觉很好，与大家分享。
https://blog.sciencenet.cn/blog-267716-567996.html
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