how can I write a function

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i have a data base with name gender and age not necessarily in the same order, some data base is gender name age. for example
'name' 'gender' 'age'
'mary' 'f' 25
'john' 'm' 35
'anna' 'f' 30
'paul' 'm' 22
'elaina' 'f' 38
if i have to use this database as cell array and only get the names of male how i do so?

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Dave B
Dave B 2021-11-17
编辑:Dave B 2021-11-17
Your data look similar to this (as you've described them):
load patients
data=[{'name'} {'gender'} {'age'}; LastName Gender num2cell(Age)]
You just use strcmp to compare strings, and specify you want the rows where gender contains 'm' and column 1
data(strcmp(data(:,2),'Male'),1) % obviously you'll use 'm' in your case
ans = 47×1 cell array
{'Smith' } {'Johnson' } {'Wilson' } {'Moore' } {'Jackson' } {'White' } {'Martin' } {'Thompson' } {'Martinez' } {'Robinson' } {'Hall' } {'Hernandez'} {'King' } {'Scott' } {'Green' } {'Baker' } {'Nelson' } {'Mitchell' } {'Perez' } {'Roberts' } {'Turner' } {'Phillips' } {'Parker' } {'Edwards' } {'Collins' } {'Stewart' } {'Reed' } {'Bell' } {'Murphy' } {'Ward' }
If it were me, I'd put these in a table and use strings, it's so much better!
t=array2table(data(2:end,:),'VariableNames',data(1,:));
t.name=string(t.name);
t.gender=categorical(t.gender);
t.age=cell2mat(t.age);
t.name(t.gender=="Male")
ans = 47×1 string array
"Smith" "Johnson" "Wilson" "Moore" "Jackson" "White" "Martin" "Thompson" "Martinez" "Robinson" "Hall" "Hernandez" "King" "Scott" "Green" "Baker" "Nelson" "Mitchell" "Perez" "Roberts" "Turner" "Phillips" "Parker" "Edwards" "Collins" "Stewart" "Reed" "Bell" "Murphy" "Ward"
  5 个评论
Manav Divekar
Manav Divekar 2021-11-18
with this code im getting an emply cell.
Dave B
Dave B 2021-11-18
Sorry i've updated the code, and added a demo (but really my intent ws to give you a strategy you can use rather than to write the code for you).

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