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How to load data into uitable via button in GUI using GUIDE

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Matt
Matt 2017-6-28
评论： Mark M 2017-7-8
I'm currently creating a GUI using GUIDE (which I am relatively new to). I would like to be able to get the end user to select a .csv file to load into the GUI and for it to be displayed in a table. So far, I am using the following code:
function loadBtn_Callback(hObject, eventdata, handles)
% hObject handle to loadBtn (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
[filename, pathname]=uigetfile({'*.csv'}, 'Select File');
if isequal(filename,0)
return
else
Path=strcat(pathname,filename);
data=readtable(Path, 'Delimiter', ';');
set(handles.data_table, 'Data', data);
end
guidata(hObject, handles);
However, I keep getting the following error:
Error using matlab.ui.control.Table/set
While setting the 'Data' property of 'Table':
Data must be a numeric, logical, or cell array
I've tried running this same code in a normal script and it works fine, what am I doing wrong?
  1 个评论
Adam
Adam 2017-6-28
编辑：Adam 2017-6-28
readtable
reads into a table data structure object, but unfortunately these (being relatively recent additions) are not supported by uitable so you have to load your data into a cell array or numeric array to feed it to uitable.
I never use csv files or tables though so someone else can hopefully advise better on how to get the data loaded in.
doc csvread
should give you a numeric matrix I think.

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Geoff Hayes
Geoff Hayes 2017-6-28
Matt - readtable returns a table which cannot be used to set the data within a uitable (as the error message indicates). Depending upon the data in your table, you can try converting it to a cell array or numeric array using table2cell or table2array respectively. Or, you can investigate using a different method to import your data from file. See Ways to Import Text Files for details.
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Mark M
Mark M 2017-7-8
Hello,
I am attempting to do something similar, but as a listbox. When the user selects an option in the listbox, I want to pull only a certain set of data from the Excel file into the uitable in my GUI. Is this possible?
Mark M
Mark M 2017-7-8
I figured it out in my case. For those interested, since I already had the dataset I wanted loaded in earlier in my code, I simply needed to use the table2cell as shown:
a = get(handles.TuscSortStreetRating,'Value'); if (a==1) figure imshow('TestImage.jpg') street1 = 'TestBook.xlsx'; T = readtable(street1); C = table2cell(T);
data=(C);
set(handles.uitable1, 'Data', data);
guidata(hObject, handles);
Once the user selects the first option of the listbox, this pops up an image and loads in the requested data from the test excel file.

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