How can we create DATASET in MATLAB?

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Machine Learning Enthusiast
评论： Walter Roberson 2021-7-7
I want to create DATASET for Nuts and Bolts by below code but i gets an error.Can anyone helps me?
% Create a standard MATLAB dataset from data and labels.
dat =[ 0.1 0.9 ; 0.3 0.95 ; 0.2 0.7 ];
lab ={ 'class 1', 'class 2', 'class 3' };
z =dataset(dat,lab);
[nlab,lablist] = getNlab(z); % Extract the numeric labels
[m,k,c]=getsize(z); % Extract number of classes
for i= 1:c
T{i}=seldat(z,i);
end;

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回答（1 个）

Walter Roberson
Walter Roberson 2016-9-26
You have two columns and three variable names.
Perhaps the rows in your data are variables. If that is the case then
dataset(dat .', lab)
  2 个评论
Machine Learning Enthusiast
Machine Learning Enthusiast 2016-9-26
it gives below error
>> Untitled Error using dataset (line 279) Must have one variable name for each column when creating multiple variables from an array.
Error in Untitled (line 6)
z =dataset(dat .', lab);
Walter Roberson
Walter Roberson 2016-9-26
If you are looking for one variable per row then,
z = dataset({dat.',lab{:}});
If you want the columns to be the variables then you have too many column names.
lab2 = lab(1:2);
z = dataset({dat, lab2{:}});

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