How can I toggle the visibility of a matlab property based on

Refering to the example on the link provided, it programmatically define tabs and group for the block GUI. I would like some of those tabs / sections to be visible or invisible depending on an action performed. For example, if First initial condition = 0, I'd like to hide second and third initial condition. If the check box for threshold is unchecked, Threshold property is not visible.

Link: matlab.system.display.SectionGroup - Create nested groupings of properties in Block Parameters dialog box for MATLAB System block - MATLAB

Lastly, I would like to remove the source code link (and text). How can I program it to be hidden?

Looking forward to some feedback, suggestions.

Answer 1

[Epsilon]

Hi Wilfried,

To dynamically control which properties appear in a MATLAB System block dialog, override the isInactivePropertyImpl method in your System object class. This approach lets you show or hide properties based on the values of other properties at runtime.

In the example below, the SecondIC and ThirdIC properties are hidden when FirstIC is set to zero. The Threshold property is only visible if UseThreshold is checked. To update the dialog after changing parameter values, click "Apply" or close and reopen the dialog box.

classdef sampleScript < matlab.System
    % sample script for dialog demo 
    
    properties(Nontunable)
        FirstIC  (1,1) double = 0
        SecondIC (1,1) double = 0
        ThirdIC  (1,1) double = 0
        UseThreshold (1,1) logical = false
        Threshold    (1,1) double = 1
    end

    methods (Access = protected)
        function group = getPropertyGroupImpl(obj)
            group = matlab.system.display.Section(...
                'Title', 'Filter Settings', ...
                'PropertyList', {'FirstIC', 'SecondIC', 'ThirdIC', 'UseThreshold', 'Threshold'});
        end

        function flag = isInactivePropertyImpl(obj, prop)
            if ismember(prop, {'SecondIC', 'ThirdIC'})
                flag = obj.FirstIC == 0;
            elseif strcmp(prop, 'Threshold')
                flag = ~obj.UseThreshold;
            else
                flag = false;
            end
        end
    end
end

In recent releases the "Source code" link cannot be toggled. As a workaround, wrap your MATLAB System block in a masked subsystem and use the Mask Editor to control which parameters are visible. The subsystem dialog will not show the "Source code" link.

[Wilfried]

Thanks Epsilon. I appreciate it.