%%
load cities

%%
cat_x = 9;
cat_y = 4;

figure
plot( ratings(:,cat_x), ratings(:,cat_y), '*' )
xlabel( categories(cat_x,:) )
ylabel( categories(cat_y,:) )

%%
x = 1:size(names,1);
figure
for j=1:9
    subplot( 3, 3, j )
    plot( x, ratings(:,j), '*')
    ylabel( categories(j,:) )
end
