Separating age into young and old groups

Hello,

I am new to matlab/coding and am having difficulty. I was wondering if it is possible to make a script that seperates my age variable into 2 groups with an age limit of 35. I want to create 2 seperate variables one young and one old that extracts from the age variable for example; ages 35 and younger and classifies it as a 'young' variable and older than 35 as and 'old' variable. Would I need to make and if else statement so that it can classify the age variable into potentially 1= young (35 and younger) and 0=old (older than 35) to then make an index for young and old that extracts the 1's into a young variable and the 0's to an old variable?

Thank you!

Answer 1

[Voss]

% 50 random ages between 1 and 100:
ages = randi(100,1,50)

ages = 1×50

11 26 39 3 49 71 53 67 10 11 98 18 46 92 75 65 50 43 56 61 19 25 94 87 80 70 38 90 59 75

% age limit/threshold for separation:
age_limit = 35;

% logical vector saying whether each age is less than or equal to
% age_limit:
is_young = ages <= age_limit;
disp(is_young);

   1   1   0   1   0   0   0   0   1   1   0   1   0   0   0   0   0   0   0   0   1   1   0   0   0   0   0   0   0   0   0   1   0   1   0   1   1   0   0   0   0   0   0   0   0   0   0   1   1   1

% use logical indexing to separate ages into two new variables:
young_ages = ages(is_young);
old_ages = ages(~is_young);

disp(young_ages);

    11    26     3    10    11    18    19    25    29    28    22    20    12    21    29

disp(old_ages);

    39    49    71    53    67    98    46    92    75    65    50    43    56    61    94    87    80    70    38    90    59    75    79    69    89    90    87    65    54    87    61    74    37    57    99