Undefined function or variable 'AppName'. ??? why ???

if Sign == 1
                        if appm==0 
                            x{end+1,1}.AppName=aa1{selA,1}.Type;
                            status='[On]';
                            dataOn=i-7;
                            app=AppName;
                            
                            appm=1;
                        end
                        SignStr = '[On]';
                        iCount = iCount + 1;
                        if ~isempty(r{selA,1})
                            r{selA,1} = r{selA,1} + 1;
                        else
                            r{selA,1} = 1;
                        end
                    else
                        if x{end}.AppName == aa1{selA,1}.Type
                            AppName=aa1{selA,1}.Type;
                            status='[Off]';
                            dataOff=i-7;
                        end

Answer 1

[madhan ravi]

It likely visible that you have a fieldname AppName from the if statement but then in the next step you assign AppName as if it is defined to app perhaps you are meant to assign with dot indexing like you did in if statement with struct x{...}.AppName

[Mohammad Junayed]

%x(AppName,status,dataOn);

% xx(AppName,number);

xx=[];

x={0};

if Sign == 1

if appm==0

x{end+1,1}.AppName=aa1{selA,1}.Type;

status='[On]';

dataOn=i-7;

app=AppName;

appm=1;

end

SignStr = '[On]';

iCount = iCount + 1;

if ~isempty(r{selA,1})

r{selA,1} = r{selA,1} + 1;

else

r{selA,1} = 1;

end

else

if x{end}.AppName == aa1{selA,1}.Type

AppName=aa1{selA,1}.Type;

status='[Off]';

dataOff=i-7;

end

SignStr = '[Off]';

iCount = iCount - 1;

if isempty(r{selA,1})

r{selA,1} = []; %%20181006

EventLog(Log_Event, FileVersion, datestr(datetime()), datestr(d{end, 1}.Time), 'There is no open event!')

disp("There is no open event!");

elseif r{selA,1} == 1

r{selA,1} = [];

else

r{selA,1} = r{selA,1} - 1;

end

end

if rem(length(x),2)==0

n=x(end-1,1).dataOn;

xx{end+1,1}.AppName=x{end,1}.AppName;

xx{end+1,1}.number=x{end}.dataOn-d{end-1}.dataOn;

fprintf('Switching appliance：%sTurn on and off： %d',xx{end}.AppName,xx{end}.number);

if n>=x{end-1}.dataOn && n<=x{end}.dataOn

fprintf('Switching appliance：%sactive： %.3freactive： %.3f',x{end}.AppName,d{x{end-1}.dataOn}.P,d{x{end-1}.dataOn}.Q);

end

end

[Mohammad Junayed]

here is my code , but i can't find the problem exactly ...

[madhan ravi]

app=Appname

[Mohammad Junayed]

Now facing this problem

[madhan ravi]

It's clearly a variable but you're treating it as a struct change your lines to below:

dataOn(end-1) and the next dataOn(end)

[Mohammad Junayed]

but ; Reference to non-existent field 'dataOn'.

Error in MainTest (line 767)

xx{end+1,1}.number=x{end}.dataOn-d{end-1}.dataOn;