Add a variable in eventdata

I need to add a variable that is user defined into 'eventdata' that is being generated using a GUI that I have made.

Example:

eventdata consists of Source and EventName.

I want to add another variable 'tag' such that now

eventdata consists of Source, EventName and tag.

Answer 1

[Deepak Gupta]

Hi,

I am assuming your eventdata is a table(because you want to keep the variable names). Let's say event data has 2 columns one for source and other for Eventname, then you can add third column to this table by simply using dot(.) operator. i.e.

eventdata.tag = tag;

You can know more about tables here: https://in.mathworks.com/help/matlab/ref/table.html

Cheers.

[Saurav Roy]

Hi !!,

Eventdata is actually an action data variable for a GUI. I tried doing that but it is throwing error

Unrecognized property 'tag' for class 'matlab.ui.eventdata.ActionData'.

Please find attached a screenshot of the eventdata variable.

[Deepak Gupta]

I see your eventdata is not a table instead it's a data type which consists an object and a string.

You can modify this datatype to a new datatype which consists a double with property name Tag as below.

function obj = addTag(eventdata, tag)
    obj.source = evnetdata.source;
    obj.EventName = evnetdata.EventName;
    obj.Tag = tag;
end

Call this function as:

eventdata = addTag(eventdata, tag);

I think it should work.

cheers.

[Saurav Roy]

Thank you.. I will give it a try !!