CODEWITHSUNDEEP
matlabuser-interface
user1578688
user1578688

Reputation: 427

Load text file on Matlab with a GUI

I have a question about how can I write a code to create a GUI in Matlab. I've created the graphic interface with a simple button. I want that, pressing that button, load a text file and after a loop, load an image and create the different bands (this process is because it's a multispectral image with different bands). This code works well if I execute on a .m file. This is the code:

% --- Executes on button press in pushbutton1.
function pushbutton1_Callback(hObject, eventdata, handles)

Dates=load ('C:\Users\Desktop\dates.txt');
NombImages=load ('images.txt');
Nimages= numel(Dates);
fileimg=NombImages(1);
fileistr=int2str(fileimg);
image1 = imread(fileistr);
size=size(imagen1);   nrows= size(1);
ncolumns= size(2);
nbands= size(3);

Images = zeros(nrows, ncolumns, nbands, Mimages, 'uint16'); 
imagess = zeros(nrows, ncolumns, nbands);

for image= 1: Nimages
    fileimg=NombImagen(image);
    fileistr=int2str(fileimg);
    imagess = imread(fileistr);
    Images(:,:,:,image)=imagess;   
end

DN= double(Images);

Band1 = Images(:,:,1);
Band2 = Images(:,:,2);
Band3 = Images(:,:,3);

end

% hObject    handle to pushbutton1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

Maybe it seems a bit complicated but it's because of the format of the images (16 bits, etc.). I don't want to visualize the bands, only load it with that code.

Any help would be appreciated. Thanks in advance,

Upvotes: 0

Views: 762

Answers (1)

Lucius II.
Lucius II.

Reputation: 1832

here we go:

you recieve an error-message, which indicates, that there is an "end" at the end of your function (the pushbutton-callback-fcn).

In Matlab it is possible to end functions without ending them with an end :)

When using GUIDE for example, this is the default. GUIDE creates functions without ending them with "end".

So the problem is: if you put an "end"-statement somwhere to end a function, Matlab is expecting an end after EVERY function!!

In your special case:

remove the "end" at the end of your code:

...
Band1 = Images(:,:,1);
Band2 = Images(:,:,2);
Band3 = Images(:,:,3);

end%<-this one :)

Another option of course is, to an end after every function...

edit

to store data within a GUI you can (or should) use the handles-structure. How to use it in detail is explained here:

TMW: guidata

A short version:

store data within the handles-structure like this:

handles.myVar = ...

and dont forget to update the structure by this command:

guidata(hObject,handles)

For you it should look like:

handles.Band1=Band1; %or directly: ...=Images(:,:,1);
...
guidata(hObject,handles)

and later on you can retrieve the data within another function (that knows about the handles-structure of course!) just like this:

handles.Band1

Upvotes: 1

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