Labeling bar charts with over 15 categories

I'm generating a simple bar-chart with category names on the x-axis. All seems to work fine when the number of categories is 15 or less. For 16 (or more) categories, the chart plots OK but the x-axis labels are not right. I'm using MatLab 2015b.

% Set number of categories.
num_categories = 16;

% Create data.
values = rand(1,num_categories);

% Create category names.
symbols = ['a':'z'];
string_length = 5;
for i = 1:num_categories
    nums = randi(numel(symbols),[1 string_length]);
    category_name(i) = cellstr(symbols(nums));
end

% Plot bar-chart.
bar(values)
set(gca,'XTickLabel',category_name)
set(gca,'XTickLabelRotation',90)

Answer 1

[Cedric]

Your code uses the former ticks. Just add the following to define ticks that match the number of bars/categories and the default position of the bars:

 set(gca,'XTick',1:num_categories)

[Trevor King]

Excellent, THANK YOU!!