Not enough Input Argument error

% I am certain that the two 'Test' variables are not empty or invalid. I am trying to call a function CountyryData using 2 input variables!

app.Test = string(cellfun(@(Data) Data(1), app.Data(61,3)));
app.Test2=app.C(61,1);
app.CumulativeCases=CountryData(app.Test2,app.Test);

%Calling this Function - that requires 2 input variables. However the Not enough Arguments error keeps coming up..

classdef CountryData < Countries
      properties
        CCC
        Temp
    end
    methods
        function obj = CountryData(name1,data1)
            obj.Temp=name1;
            obj.CCC=data1;
     end
        
    end
end

[Geoff Hayes]

Padmakar - perhaps the issue is with the Countries class? Please copy and paste the full error messag eto this question as that might reveal where the error is. Also, what are the values for app.Test2 and app.Test?

[PADMAKAR]

 function DataLoading(app)
            load 'covid_data2.mat' covid_data; 
            [app.r,app.col]=size(covid_data);
            
for i=2:app.r
    j=i-1;
    CountryList(j)=string(covid_data(i,1));
    
end

app.Data=covid_data(2:end,:);
app.Dates=covid_data(1,3:app.col);

[app.C,~,IC]=unique(CountryList,'stable');

app.C=app.C';

Y = hist(IC,unique(IC)); % Determine frequency of repeated Country Names in Column 1
Y=Y';
j=0;
m=0;
n=1;


for i=1:length(app.C) 
    j=Y(i,1);
    
    if j ==1 
        k=m+1;
        app.Country(i)=Countries(app.C(i,1),app.Data(k:k,2));  
        m=k;
     
     elseif j > 1
        n=m+j; 
        m=m+1;
            
      app.Country(i)=Countries(app.C(i,1),app.Data(m:n,2));   
      m=n;  
    end
 
end
app.CountryListBox.Items=["All Countries", app.Country.CountryNameList];
app.CountryListBox.Value= "All Countries";
app.RegionListBox.Items="All";
app.Test = cellfun(@(Data) Data(1), app.Data(61,3));
app.Test2=app.C(61,1);
app.CumulativeCases=CountryData(app.Test,app.Test2);

[PADMAKAR]

I have attached 2 classdeg files. Countries is a superclass and CountryData is a subClass.

I am just testing the CumulativeCases Object using some Test data randomly created.

Answer 1

[Cris LaPierre]

CountryData is a class. I believe you need to create an instance of your object and then use that when calling your method. See this answer. See this documentation page.

Something like this.

c = CountryData;
CountryData(c,app.Test2,app.Test)

[PADMAKAR]

%As suggested, I created a simple code - No success. Also made CountryData a superclass. No %Success.

app.CumulativeCases=CountryData;

app.CumulativeCases(1).Country=app.C(1,1);

app.CumulativeCases(1).Dates=app.Dates(1,3);

app.CumulativeCases(1).CumCases=cellfun(@(Data) Data(1), app.Data(1,3));

%Not sure what is casuing Not enough inputs error. Appreciate your insight..

[PADMAKAR]

classdef CountryData 
       properties
        Country
        Date
        CumCases
    end
    
    methods
        function obj1 = CountryData(country,date,cumcases)
            %obj1@Countries(name,state);
            obj1.Country=country;
            obj1.Date=date;
            obj1.CumCases=cumcases;
            
        end
  end
end

[Cris LaPierre]

Your class is slightly different from the one I pointed you to. The main difference is that your function has the same name as your class (CountryData), making is a constructor method. From the page I pointed you to:

• The constructor method has the same name as the class and returns an initialized object of the class.

Your function has 3 inputs, so when you create your class instance, you must do so using 3 inputs.

app.Data = CountryData(input1, input2, input3)

Because it is a constructor method, you do not need to provide the object as an input.

Once you have created an instance of the course, you would use dot notation to access the individual properties. For example

app.Data.Country