load 4 images and display in 4 diff axes in GUI

Hi all,

i have created a button which will load images from the file. i needed to load 4 images and display them in 4 different axes in GUI. However, i have encountered some error in my final code.

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[MATLAB, folders] = uigetfile('*.*', 'MultiSelect', 'on')

filename1=strcat(folders,MATLAB(1))

filename2=strcat(folders,MATLAB(2))

filename3=strcat(folders,MATLAB(3))

image1=imread(filename1);
axes(handles.axes2)
imshow(image1)
handles.img=image1;
guidata(hObject, handles);

image2=imread(filename2);
axes(handles.axes3)
imshow(image2)
handles.img=image2;
guidata(hObject, handles);

image3=imread(filename3);
axes(handles.axes4)
imshow(image3)
handles.img=image3;
guidata(hObject, handles);

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Here's the error:

??? Conversion to logical from cell is not possible.

Error in ==> imread at 342 if (strfind(filename, '://'))

Error in ==> test2>pushbutton2_Callback at 100 image1=imread(filename1);

Error in ==> gui_mainfcn at 96 feval(varargin{:});

Error in ==> test2 at 42 gui_mainfcn(gui_State, varargin{:});

Error in ==> @(hObject,eventdata)test2('pushbutton2_Callback',hObject,eventdata,guidata(hObject))

??? Error while evaluating uicontrol Callback__

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PLS HELP!!

thanks!

Answer 1

[Jan]

• "MATLAB" is a strange name for a file name. This is not an error, but confusing.
• After importing several files, the output is a cell string. Then strcat(folders,MATLAB(1)) is a cell string also. But IMREAD requires a string. Solution:

filename1 = strcat(folders, MATLAB{1});  % curly(!) braces

• When you want to import 4 images, using filename1 to filename3 misses one of them. Using a loop would be smarter. Suggestion:

[File, Folder] = uigetfile('*.*', 'MultiSelect', 'on');
handles.img = cell(1, length(File));
for iFile = 1:length(File)
  filename = strcat(Folder, File{iFile});
  image = imread(filename);
  axes(handles.axes(iFile));  % Better use a vector to store handles
  imshow(image);
  handles.img{iFile} = image;
end
guidata(hObject, handles);

Note: Using handles.axes(i) is more flexible than inserting the index in the name as in handles.axes1.

[sha]

Thanks Simon!

i managed to make all the 3 images to appear at 3 different axes! i have just edit the curly bracket and it works like a charm!

Answer 2

[ARUN Robert]

i need a help sir. i want to view all my different images for the folder in single GUI axes window plz help me to send the code sir plz

[Jan]

"Send the code" is not the right option in a public forum which is based on sharing the solutions. Most of all I cannot guess, what "view in single GUI" means. Please open a new thread for a new question and explain your problem exactly. What have you tried so far and which problems occur?