I am using this code to convert .jpg file to maltab .fig but in matlab lab file there is no figure represented and if I want to convert more than one .jpg files to fig how can I. I am attaching two files

img = imread('~~.jpg');
imshow(img);
savefig('~~~.fig');

[Paolo]

I'm not really sure what your question is. This works fine:

 img = imread('circle_shear_rate.jpg'); 
 imshow(img);
 savefig('shear.fig')

[Muhammad Khan]

when you save shear.fig the figure file opens but there is no image.

[Paolo]

How are you opening the image? Try the following:

 openfig('shear.fig','visible')

[Muhammad Khan]

there is nothing no figure can you send me file

[Walter Roberson]

Duplicated by later https://www.mathworks.com/matlabcentral/answers/403123-i-have-matlab-figures-in-jpg-file-how-can-i-export-data-points-of-the-graph-in-excel which also has answers.

Answer 1

[KSSV]

images = dir('*.jpg') ;
N = length(images) ;
% loop for each image
for i = 1:N
    I = imread(images(i).name) ; 
    [filepath,name,ext] = fileparts(images(i).name) ;
    imshow(I) ;
    savefig([name,'.fig']);
end

[KSSV]

Muhammad Khan commented: I need to convert .jpg to .fig file in matlab and then extract data from that file to excel. How can I do that above codes does not work.

[KSSV]

When you read the image using imread, already you have data in hand...why/what you want to plot and then extract?

[Muhammad Khan]

but it does not give me values of x and y to put data in excel how can I get that from graph

[KSSV]

I = imread(images(i).name) ;

The above code, gives you matrix I, which is a 3D matrix if the image is RGB.

[Walter Roberson]

You need to digitize the image like I mentioned. There are a number of File Exchange contributions for this purpose.

[Muhammad Khan]

Ok

Answer 2

[Walter Roberson]

Look in the File Exchange and search for tag:digitize as I have marked a number of routines designed to extract plot information from images.

It would be much easier to extract the data before you wrote them as .jpg files.