I am not able to solve this issue?

Question

Rakesh Roshan 2022-6-5

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1734175-i-am-not-able-to-solve-this-issue

评论： Walter Roberson 2022-6-12

no_of_people=4;
T = readtable('88.xlsx');
T1=table2cell(T);
for i=1:4     %no of people
    count=csvread('count.csv')       %extracting the data
    person_name=[T{i,1}];
    age=[T1(i,2)];
    indicate=[T1(i,3)];
    BP1=[T1(i,4)];
    BP2=[T1(i,5)];
    BP3=[T1(i,6)]
    BloodPressure=BP3+50;
    total=[person_name age indicate BP1 BP2 BloodPressure]
    dlmwrite('input.csv',total,'-append','delimiter',',')
    count=count+1;
    if count<=no_of_people
        
        dlmwrite('count.csv',count);
    else count=1
        dlmwrite('count.csv',count)
    end
end
Error using dlmread
Unable to parse a "Numeric" field when reading row 1, field 1.
   Actual Text: "Sanchez,38,1,71,176,124"
   Expected: A number or literal "NaN", "Inf". (possibly signed, case insensitive)

Error in csvread (line 53)
    m=dlmread(filename, ',', r, c); %#ok<*DLMRD> 

For each person 3 simulations are carried out. If by chance in 2nd simulation it gets stopped, then data from 2nd simulation entirely should get deleted and start from that simulation only.

For example in my case sanchez will be selected first 1 simulation perfectly performed data is written into input.csv then in 2nd simulation it is stopped. Data written is entirely deleted and simulation starts from that 2nd simulation. I have tried out but no luck

I'm using the 2018a version.

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Jan 2022-6-5

在 MATLAB Online 中打开

@Rakesh Roshan: Your code does not run but produces clear error messages. Simply press the green triangle in the forum's editor to see them.

person_name=T[i,1];
%            ^   ^ ???

While the square brackets are wrong here, they are useless in:

age=[T1(i,2)];

[] is the concatenation operator and you concatenate the value ot T1(i,2) with nothing.

You have provided 'count.xlsx', but load 'count.csv'.

Why do you store the value of count in a file?

Please take the time to explain, what exactly the problem with oyur code is. "I have tried out but no luck" is too vague. Did you read the links Image Analyst has provided?

Rakesh Roshan 2022-6-11

sir i have updated the code now plz tell me how to solve the issue

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Answer 1

Walter Roberson 2022-6-11

0
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1734175-i-am-not-able-to-solve-this-issue#answer_983700

csvread() can never read text. It could be configured to skip the first column, but your code wants that information.

You should use readtable() with ReadVariableName set false.

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Rakesh Roshan 2022-6-12

For example in my case ram will be selected first 1 simulation perfectly performed data is written into input.csv then in 2nd simulation it is stopped. Data written is entirely deleted and simulation starts from that 2nd simulation.

Sir...... i dono when i can get error ..it purely depends on interfacing...its unpredictable

program wise error is not there... but sometimes when it gets interfaced at that time only one error comes and it gets stopped.

and that particular time only i have to delete 2nd person detail(suppose it gets stopped here) from csv file and start simulation again from that 2nd person

i hope i have cconveyed it properly.

Walter Roberson 2022-6-12

在 MATLAB Online 中打开

main_output_name = 'my_results.txt';
backup_name = 'backup_copy.txt';
fid = fopen(main_output_name, 'w'); fclose(fid);
copyfile(main_output_file, backup_name);
for K = 1 : 4
    try
        attempt step #K
        determine whether step worked, contents look wrong somehow
        if it_worked
            copyfile(main_output_file, backup_name);  %becomes permanent
        else
            copyfile(backup_name, main_output_file);  %remove output
        end
    catch ME
        %problem such as subscript
        copyfile(backup_name, main_output_file);  %remove output
    end
end