How can I resize a plot image and save it?

Question

Joon Yong Chu 2019-9-7

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/479324-how-can-i-resize-a-plot-image-and-save-it

回答： Devineni Aslesha 2019-9-10

Hi guys,

How can i resize a plotted graph to a certain image size before saving it?

I currently need a 32 by 32 pixel image file and I am only successful in creating the plot thus far as shown below. And would it be possible also to convert it in to a image file of 32x32x1 size too?

Please help me, many thanks in advance!

    x=0:0.01:randi(10);
    
    img1 = figure;
    
    fxs = {sin(x),x.^2,x.^3};
    y=fxs{randi(3)};
    plot(x,y,'w');
    
    set(gcf,'color','k');
    set(gca,'Color','k')
  
    camroll(randi(360));
    
    baseFileName = sprintf('CL %d.png',i);
    fullFileName = fullfile('Curves', baseFileName);
    export_fig(fullFileName);

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Devineni Aslesha 2019-9-10

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/479324-how-can-i-resize-a-plot-image-and-save-it#answer_391209

在 MATLAB Online 中打开

Assuming the resolution of image to be 32*32 pixels, the image is saved in the specified resolution and format using print function in MATLAB.

x=0:0.01:randi(10); 
img1 = figure; 
fxs = {sin(x),x.^2,x.^3}; 
y=fxs{randi(3)}; 
plot(x,y,'w');     
set(gcf,'color','k'); 
set(gca,'Color','k'); 
camroll(randi(360)); 
print('Curves','-dpng','-r100'); 

This print function saves the image with a resolution of 125*33 pixels as its resolution is set as 100 dpi. However, the image is not obtained as a square image by changing the resolution in dpi.

Doc Link:

https://www.mathworks.com/help/matlab/ref/print.html