fopen gives negative fid in GUI
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I started a GUI using GUIDE. I have a browse button that uses uigetdir to get path to folder where I have some excel files, that later on I will read with my script. Problem is in fopen who gives message: No such file or dir. I used debugger and went step by step and to me everything seems to be ok, file path is correctly stored, I don't know what could be the problem. I tried with uigetfile but he only gets path to specific file, and I will have maybe 400 files in that folder.
Help is greatly appreciated.
This part of the code is from gui:
function Browse_1_Callback(hObject, eventdata, handles)
% hObject handle to Browse_1 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
FileName = uigetdir;
handles.FileName = FileName;
guidata(hObject,handles)
This part from script that runs after button press:
myFolderPV = handles.FileName;
PVFiles = dir(fullfile(myFolderPV,'*.js'));
numfilesPV= length(PVFiles);
for k = 1:numfilesPV
[fid, message] = fopen(PVFiles(k).name);
...
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