Axescheck →

plot(ax, y) — Plots specifically in the axes defined by the handle ax .

function myCustomPlot(varargin) % 1. Extract the axes if provided [ax, args, nargs] = axescheck(varargin{:}); % 2. If no axes was provided, use the current one (gca) if isempty(ax) ax = gca; end % 3. Extract your data from 'args' x = args{1}; y = args{2}; % 4. Perform the plot on the specific axes line(x, y, 'Parent', ax); end Use code with caution. Modern Context: Beyond the Command Line axescheck

: It looks at the first argument in the list. It checks if that argument is a valid graphics handle of type axes (or a related object like a uifigure in modern MATLAB). plot(ax, y) — Plots specifically in the axes

Here is a simplified look at how a professional MATLAB function might be structured: If no axes was provided, use the current