string and variables bar plot

Hello every one,

I would like to make a bar graph or something same.

I have cases from 1 up to 18

and each case depending on the problems refers to three categoris(A,B,C).

I do not know how to plot the bar graph, could you please help me with dommands.

thanks.

example

x=1:1:18;
categories= ['A','B','C']

% after soving the problem, 
A consists of x numbers from 8-15
B consists of x numbers from 16-18
C consists of x numbers from 1-7

or these distribution can be random.

Answer 1

[Walter Roberson]

categories = {'A','B','C'};

N = 50;
x = randi(18, 1, N);
cats = categorical(categories);

C = discretize(x, [1, 8, 16, 18]);

counts = accumarray(C(:), 1);
bar(cats, counts)

Answer 2

[mehmet salihi]

I guess i explained what i need wrongly,

I have 18 cases, these cases are refering to each group.

I want to show as plot which category what includes.

these cases could be 18 person name or city name.

thank you for your fast answers