Not enough Input Argument error

Question

PADMAKAR 2021-9-16

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1454874-not-enough-input-argument-error

评论： Cris LaPierre 2021-9-18

% 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

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PADMAKAR 2021-9-18

在 MATLAB Online 中打开

 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 2021-9-18

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.

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Answer 1

Cris LaPierre 2021-9-16

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1454874-not-enough-input-argument-error#answer_789114

在 MATLAB Online 中打开

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)

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PADMAKAR 2021-9-18

在 MATLAB Online 中打开

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 2021-9-18

在 MATLAB Online 中打开

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: