Question

matlab有函数能自动保存图吗

用plot画了一个图，有函数能让这个图以matlab的形式自动保存吗

Answer 1

Matlab提供直来接的saveas函数可以将自指知定figure中的图道像

调用举例：

>> h=figure

h =

1

>> plot(rand(2,4))

>> saveas(h,'hello','jpg')

扩展资料：

MATLAB包括拥有数百个内部函数的主包和三十几种工具包。工具包又可以分为功能性工具包和学科工具包。功能工具包用来扩充MATLAB的符号计算，可视化建模仿真，文字处理及实时控制等功能。学科工具包是专业性比较强的工具包，控制工具包，信号处理工具包，通信工具包等都属于此类。

图形处理系统使得MATLAB能方便的图形化显示向量和矩阵，而且能对图形添加标注和打印。它包括强大的二维三维图形函数、图像处理和动画显示等函数。

Answer 2

用saveas就可以，saveas(h,'filename','format') ，h是当前图的句柄，filename打算保存图片的路径，format是保存的格式，可以是jpg或fig等格式。
官方解释：SaveAs on the figure window menu to accessthe Save As dialog, in which you can select a graphics format. Fordetails, see Exporting in a Specific Graphics Format in the MATLAB® Graphicsdocumentation. Sizes of files written to image formats by this GUIand by saveas can differ due to disparate resolutionsettings.
调用举例：
>> h=figure
h =
1
>> plot(rand(2,4))
>> saveas(h,'hello','jpg')

Answer 3

Matlab提供直接的saveas函数可以将指定figure中的图像
例如
x=-pi:pi/20:pi;
for i=1:4
y(:,i)=sin(i*x);
text=['figure',num2str(i)]
figure(i)
plot(x',y(:,i))
title(text)
h1 = figure(i);
name1=['figure',num2str(i),'.jpg']
name1=['figure',num2str(i),'.fig']
saveas(h1,name1);
saveas(h1,name2);
end

追问

请问saveas执行后，这个图存哪里了

追答

当前目录下面

追问

能存指定路径吗

追答

好像不行
help saveas
SAVEAS Save Figure or Simulink block diagram in desired output format
SAVEAS(H,'FILENAME')
Will save the Figure or Simulink block diagram with handle H to file
called FILENAME.
The format of the file is determined from the extension of FILENAME.

SAVEAS(H,'FILENAME','FORMAT')
Will save the Figure or Simulink block diagram with handle H to file
called FILENAME in the format specified by FORMAT. FORMAT can be the
same values as extensions of FILENAME.
The FILENAME extension does not have to be the same as FORMAT.
The specified FORMAT overrides FILENAME extension.

Valid options for FORMAT are:

'fig' - save figure to a single binary FIG-file. Reload using OPEN.
'm' - save figure to binary FIG-file, and produce callable
MATLAB code file for reload.
'mfig' - same as M.
'mmat' - save figure to callable MATLAB code file as series of creation
commands with param-value pair arguments. Large data is saved
to MAT-file.
Note: MMAT Does not support some newer graphics features. Use
this format only when code inspection is the primary goal.
FIG-files support all features, and load more quickly.

Additional FORMAT options include devices allowed by PRINT.