Matlab绘图基础——用print函数批量保存图片到文件(Print figure or save to file)

一、用法解析... 1

1.1. 分辨率-rnumber. 1

1.2.  输出图片的“格式”formats. 1

二、用法示例... 1

2.1. 设置输出图片的“图像纵横比”... 1

2.2. Batch Processing(图片保存“批处理”)filename. 1

1.2. 输出图片的“格式”formats. 1

一、用法解析

print(figure_handle,'formats','-rnumber','filename') 

%将图形保存为formats格式,分辨率为600的(默认为72),最好指定的分辨率大一点,否则保存图形的效果较差.

1.1. 分辨率-rnumber

Use -rnumber to specify the resolution of the generated output.

To set the resolution(分辨率) of the output file for a built-in MATLAB format, use the -r switch.

l  For example, -r300 sets the output resolution to 300 dots per inch(每英寸300个点)

The –r switch is also supported for Windows Enhanced Metafiles(增强型图元文件), JPEG, TIFF and PNG files, but is not supported for Ghostscript raster formats(栅格文件).

l  For more information, see Printing and Exporting without a DisplayandResolution Considerations.

—— 来自matlab帮助“print”页中

1.2.  输出图片的“格式”formats

请参考本文末尾

二、用法示例

% Save the figure with the handle h to a PostScript file named Figure1, which can be printed later.

H = figure;   % 指定图片打印figure_handles

% 若没有figure_handle,则默认print当前显示图片

plot(1:4,5:8)

print(h,'-dpng','-r200','Figure1')      % 这三行代码就够用了

2.1. 设置输出图片的“图像纵横比”

When you set the axes Position to [0 0 1 1] so that it fills the entire figure, the aspect ratio is not preserved when you print because MATLAB printing software adjusts the figure size when printing according to the figure's PaperPositionproperty. To preserve the image aspect ratio图像纵横比 when printing, set the figure's 'PaperPositionMode' to 'auto' from the command line.

set(gcf,'PaperPositionMode','auto')

% Setting the current figure's (gcf) PaperPositionMode to auto enables

% you to resize the figure window and print it at the size you see on the screen.

举例

surf(peaks);shading interp           % 画图,shading使图像美观

axis off                                 % 不显示坐标轴

set(gcf,'PaperPositionMode','auto'); % 设置图像纵横比

print('-dpng','-r200','a');           % 保存图片,名为a

——来自matlab帮助 Printing Images

2.2. Batch Processing(图片保存“批处理”)filename

You can use the function form of print to pass variables containing file names. For example, this for loop uses file names stored in a cell array to create a series of graphs and prints each one with a different file name:

fnames = {'file1', 'file2', 'file3'};

for k=1:length(fnames)

    surf(peaks);shading interp

    print('-dtiff','-r600',fnames{k}) % fnames is a cell of string arrays so each element is a string

end

————来自matlab帮助“print”页末

注:如果你不能调整输出分辨率和文件格式,可能是"Printing and Exporting without a Display"问题,具体查看帮助“print”

 

———分割线————————————————————————————

 

1.2. 输出图片的“格式”formats

The following table shows the supported output formats for exporting from figures and the switch settings to use. In some cases, a format is available both as a MATLAB output filter and as a Ghostscript output filter. All formats except for EMF are supported on both Windows and UNIX platforms.

Graphics Format

Bitmap or Vector(矢量)

Print Command

Option String

MATLAB or

Ghostscript

BMP monochrome BMP

Bitmap

-dbmpmono

Ghostscript

BMP 24-bit BMP

Bitmap

-dbmp16m

Ghostscript

BMP 8-bit (256-color) BMP (this format uses a fixed colormap)

Bitmap

-dbmp256

Ghostscript

BMP 24-bit

Bitmap

-dbmp

MATLAB

EMF

Vector

-dmeta

MATLAB

EPS black and white

Vector

-deps

MATLAB

EPS color

Vector

-depsc

MATLAB

EPS Level 2 black and white

Vector

-deps2

MATLAB

EPS Level 2 color

Vector

-depsc2

MATLAB

HDF 24-bit

Bitmap

-dhdf

MATLAB

ILL (Adobe Illustrator)

Vector

-dill

MATLAB

JPEG 24-bit

Bitmap

-djpeg

MATLAB

PBM (plain format) 1-bit

Bitmap

-dpbm

Ghostscript

PBM (raw format) 1-bit

Bitmap

-dpbmraw

Ghostscript

PCX 1-bit

Bitmap

-dpcxmono

Ghostscript

PCX 24-bit color PCX file format, three 8-bit planes

Bitmap

-dpcx24b

Ghostscript

PCX 8-bit newer color PCX file format (256-color)

Bitmap

-dpcx256

Ghostscript

PCX Older color PCX file format (EGA/VGA, 16-color)

Bitmap

-dpcx16

Ghostscript

PDF Color PDF file format

Vector

-dpdf

Ghostscript

PGM Portable Graymap (plain format)

Bitmap

-dpgm

Ghostscript

PGM Portable Graymap (raw format)

Bitmap

-dpgmraw

Ghostscript

PNG 24-bit

Bitmap

-dpng

MATLAB

PPM Portable Pixmap (plain format)

Bitmap

-dppm

Ghostscript

PPM Portable Pixmap (raw format)

Bitmap

-dppmraw

Ghostscript

SVG Scalable Vector Graphics (For Simulink Models Only)

Vector

-dsvg

MATLAB

TIFF 24-bit

Bitmap

-dtiff or -dtiffn

MATLAB

TIFF preview for EPS files

Bitmap

-tiff

 
posted @ 2018-04-12 17:16  司徒鲜生  阅读(20171)  评论(0编辑  收藏  举报