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How to import text file in GUI and link it with another .m program

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Lau Jit Sung
Lau Jit Sung 2020-5-11
评论： Mehmed Saad 2020-5-11
I just wrote a program on importing text file in GUI, and I am not sure whether it really reads the file
% --- Executes on button press in datum1.
function datum1_Callback(hObject, eventdata, handles)
% hObject handle to datum1 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
[filename1 pathname1]=uigetfile({'*.txt'},'File Selector');
datum1=strcat(pathname1, filename1);
set(handles.datum1txt,'String',datum1)
% --- Executes on button press in datum2.
function datum2_Callback(hObject, eventdata, handles)
% hObject handle to datum2 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
[filename2 pathname2]=uigetfile({'*.txt'},'File Selector');
datum2=strcat(pathname2, filename2);
set(handles.datum2txt,'String',datum2)
After that, I want to link this program to a file called geodesycode.m with a push of a button.
  2 个评论
Rik
Rik 2020-5-11
What makes you think it read the file? You are only storing the paths to a file in the String property of two objects.
What is the input of that function? The file names or the contents of those files?

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Mehmed Saad
Mehmed Saad 2020-5-11
编辑：Mehmed Saad 2020-5-11
https://www.mathworks.com/help/matlab/ref/fscanf.html
you have the filename and pathname, build full file name from parts
full_filename1 = fullfile(pathname1,filename1);
Use fopen to open or obtain information about file
fileID = fopen(full_filename1);
select formatspec (currently i am setting it to string)
formatSpec = '%s'; %Read all characters excluding white spaces
Now scan file with your defined formatspec using fscanf
A = fscanf(fileID,formatSpec);
Now add this to you gui handle
set(handles.datum1txt,'String',A)
and donot forget to close the file at the end
fclose(fileID)
Edit: You can also use textscan instead of fscanf
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Lau Jit Sung
Lau Jit Sung 2020-5-11
Hi sir, sorry to bother again what if I wanna include the blank spaces
formatSpec = '%s'; %Read all characters excluding white spaces
is there anything I should do? Thank you
Mehmed Saad
Mehmed Saad 2020-5-11
Use textscan instead of facanf See textscan help You have to provide three inputs 1. File id 2. format spec ('%s') 3. Delimeter

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