Create dataset with class and variable labels

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KG 2013-10-11

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https://ww2.mathworks.cn/matlabcentral/answers/89872-create-dataset-with-class-and-variable-labels

回答： SGUNITN 2018-4-10

How do I create dataset for 24 variables with 150 observations (150 x 24 matrix) belonging to 5 classes (in the 25th column ) ? I need to create variable and class labels. I have tried to save the matrix (150x24)as .dat file but need help to create labels within the file. Please help!

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Answer 1

SGUNITN 2018-4-10

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https://ww2.mathworks.cn/matlabcentral/answers/89872-create-dataset-with-class-and-variable-labels#answer_314336

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Hi,

You can split your dat file into 2:

150 x 24 as a data.csv

150 x 1 as the labels.csv

   data = csvread('data.csv');     % Read a 2 D datafile 150 x 24
   labels = csvread('labels.csv'); % Read a 1 D labels   150 x 1
   a = prdataset(data,labels);     % Command to create PR Datasets
   a = setprior(a,0);              % Reset class prior probabilities of dataset
   a(isnan(a)) = 0;                % Ensure there is no 'not a number'