Unrecognized function or variable 'classify' in APP DESIGNER

%This is how I load my .mat file

app.Lettuce_Net = load ('Lettuce_Net.mat');

app.Lettuce_Net = app.Lettuce_Net.Lettuce_Net;

handles.Lettuce_Net = app.Lettuce_Net;

handles.output = hObject;

% Update handles structure

guidata(hObject, handles);

%This is how I classify the uploaded Image

function classify_1_Callback(app, event)

% Create GUIDE-style callback args - Added by Migration Tool

[hObject, eventdata, handles] = convertToGUIDECallbackArguments(app, event); %#ok<ASGLU>

% hObject handle to classify_1 (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

app.Lettuce_Net = handles.Lettuce_Net;

handles = guidata(hObject);

b = handles.b;

b = imresize(b, [227, 227], 'nearest');

[YPred,scores] = classify(app.Lettuce_Net, b);

scores = max(double(scores*100));

set(handles.result,'string',join([string(YPred),'' ,scores ,'%']));

end

Answer 1

[Image Analyst]

It seems you do not have the Deep Learning Toolbox or Statistics and Machine Learning Toolbox. What does this say:

>> ver

(erase your license number before posting your toolboxes). What do you see if you do this:

>> which -all classify

C:\Program Files\MATLAB\R2022a\toolbox\stats\stats\classify.m

C:\Program Files\MATLAB\R2022a\toolbox\nnet\cnn\@DAGNetwork\classify.m % DAGNetwork method

C:\Program Files\MATLAB\R2022a\toolbox\matlab\depfun\+matlab\+depfun\+internal\FileClassifier.m % matlab.depfun.internal.FileClassifier method

[Johann Sebastian Servas]

@Image Analyst Problem is already resolved. Thank you so much sir for the help may God bless you and your family!

[Fatin Nasuha Bt Asrol]

@Johann Sebastian Servas sorry if it inappropriate to ask..may I know how do you solve this problem because it same with my situation.

[Johann Sebastian Servas]

@Fatin Nasuha Bt Asrol Good day just install the deep learning toolbox and you’re good to go.

[Fatin Nasuha Bt Asrol]

@Johann Sebastian Servas Thank you.

[Fatin Nasuha Bt Asrol]

@Image Analyst May I ask, Is it will effect for my function classify in coding if I did not get the same result with you for the last sentences as below? I get econ not depfun. I always get the error for the function classify eventhough I already installed deep learning toolbox.

I will apreaciated if you can assist me to solve this problem. Thank you.

>>which classify -all

D:\Softwares\MATLAB\toolbox\stats\stats\classify.m

D:\Softwares\MATLAB\toolbox\nnet\cnn\@DAGNetwork\classify.m % DAGNetwork method

D:\Softwares\MATLAB\toolbox\econ\econ\@dtmc\classify.m % dtmc method

[Image Analyst]

@Fatin Nasuha Bt Asrol do you see the deep learning toolbox when you enter this

>> ver

You say "my function classify" so it is a custom function you wrote, or is it one of the MATLAB-supplied functions:

>> which -all classify

C:\Program Files\MATLAB\R2022a\toolbox\stats\stats\classify.m

C:\Program Files\MATLAB\R2022a\toolbox\matlab\depfun\+matlab\+depfun\+internal\FileClassifier.m % matlab.depfun.internal.FileClassifier method

C:\Program Files\MATLAB\R2022a\toolbox\nnet\cnn\@DAGNetwork\classify.m % DAGNetwork method

[Walter Roberson]

Methods of a class do not always show up for "which" unless the class is currently loaded.

[Walter Roberson]

@Fatin Nasuha Bt Asrol

What is class() of the first parameter of your call to classify() ?

[Image Analyst]

@Fatin Nasuha Bt Asrol what is the exact error message. Tell us all the red text you see in the command window, including the lines of code, and line numbers, and the error message itself.