load 4 images and display in 4 diff axes in GUI

Question

sha 2012-9-14

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/48156-load-4-images-and-display-in-4-diff-axes-in-gui

评论： Jan 2017-3-15

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.

--------------------------------------------------------------------

[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);

-----------------------------------------------------

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__

------------------------------------------------

PLS HELP!!

thanks!

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Answer 1

Jan 2012-9-14

0
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/48156-load-4-images-and-display-in-4-diff-axes-in-gui#answer_58801

编辑：Jan 2012-9-14

在 MATLAB Online 中打开

"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.

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sha 2012-9-25

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!

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Answer 2

ARUN Robert 2017-3-15

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https://ww2.mathworks.cn/matlabcentral/answers/48156-load-4-images-and-display-in-4-diff-axes-in-gui#answer_258756

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

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Jan 2017-3-15

"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?

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