reading values from file

Question

Eddie Burns 2019-11-19

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/491889-reading-values-from-file

评论： Philippe Lebel 2019-11-19

I am trying to read values from an excel csv file using 89 patient's data with the 13 variables show. I then use if else statements and a decision tree to decide if patient has heart disease. I am having trouble using csvread and am unsure of how to get this piece of code to work. I have been told i should use a matrix to help. Any suggestions on how I could fix this code

data = csvread('C:\Users\User\Documents\Signal processing\testData CW1.csv');

for i = 1:89

patient_Age = data(i,1);

patient_Gender = data(i,2);

patientChestPain = data(i,3);

patientRestingBP = data(i,4);

Serum_Cholestorol = data(i,5);

Fasting_BloodSugar = data(i,6);

Resting_ECG = data(i,7);

maximum_HR = data(i,8);

exercise_Angina = data(i,9);

ST_Depression = data(i,10);

ST_Slope = data(i,11);

flouro_Results = data(i,12);

heart_Condition = data(i,13);

end

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Bhaskar R 2019-11-19

Use importdata or readtable commands for the better extraction of the data

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Answer 1

Philippe Lebel 2019-11-19

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/491889-reading-values-from-file#answer_402222

在 MATLAB Online 中打开

You are over writing the variables each loop!

I'd do it this way:

data = csvread('C:\Users\User\Documents\Signal processing\testData CW1.csv');
patient_Age = data(:,1);
patient_Gender = data(:,2)
patientChestPain = data(:,3);
...

4 个评论
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Eddie Burns 2019-11-19

if patient_ChestPain >3 && Serum_Cholestorol <=0

disp("Patient has heart disease")

elseif patient_ChestPain >3 && Serum_Cholestorol >0 && ST_Depression >0.8 && ST_Slope >1

disp("Patient has heart disease")

.......

Philippe Lebel 2019-11-19

在 MATLAB Online 中打开

it's because now you have lists containing 89 data each.

for i = 1:length(patient_Age)
    if (patient_ChestPain(i) >3) && (Serum_Cholestorol(i) <=0)
        disp("Patient has heart disease")
    elseif (patient_ChestPain(i) >3) && (Serum_Cholestorol(i) >0) && (ST_Depression(i) >0.8) && (ST_Slope(i) >1)
        disp("Patient has heart disease")
    end
end