How do I relabel classes into one sub group?

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tinkiewinkie
tinkiewinkie 2020-2-11
编辑： Adam Danz 2020-2-12
Suppose I have 3 different classes below, how to I relabel 'versicolor' and 'virginica' into another class named 'abnormal' temporary because I want to do classification for 'setosa' and 'abnormal' using fitcsvm function first and later I will need to relabel the class again for another fitcsvm classifcation model.
Screenshot 2020-02-12 at 12.46.58 AM.png

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Adam Danz
Adam Danz 2020-2-11
编辑：Adam Danz 2020-2-11
load fisheriris
idx = ~ismember(species, 'setosa');
species(idx) = {'abnormal'};
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tinkiewinkie
tinkiewinkie 2020-2-11
Thanks it work well, and is there any command that I can use in the later part of the algorithm to revert back to the orginal class? For example from 'abormal' back to 'versicolor' and 'virginica' and relabel 'virginica' and 'setosa' as 'abnormal2'?
Adam Danz
Adam Danz 2020-2-11
编辑：Adam Danz 2020-2-12
I would just make a copy of the species array so you don't lose that data. You can change the ismember() inputs as needed. For example,
idx = ~ismember(species, {'virginica','setosa'});

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