Graphic Objects Array Items to Text

Hello. I want to view all the graphics objects I have on a UIAxes, and have used the following in an attempt to output all the items to a text area.

            clc;
            ax=app.UIAxes;
            b=ax.Children       % b(1) is last object added to uiaxes
            class(b(1))         % Check class of 1st item
            n=numel(b);         % Count of items on UIAxes
            for i=1:n
                ReportMessage(app,'******* Graphics Objects *******');
                % ReportMessage(app,b(i)); %This doesn't work, so try char
                ReportMessage(app,char(b(i)));
            end    

This is my own "ReportMessage" function:

         function ReportMessage(app,msg)
            currString=get(app.MessagesTextArea,'Value');
            %currString=[{char(msg)};currString];  %add to top of message box
            currString=[currString; {char(msg)}];  %add to bottom of message box
            app.MessagesTextArea.Value=currString;
            drawnow;
            scroll(app.MessagesTextArea,'bottom');
         end

But I'm struggling to convert the graphics item to a string, I haven't found anything searching google.

         b = 
         4×1 graphics array:
         
         Text    (\leftarrowy = 0.0000x^2 + -0.0002x + 1.5175)
         Line
         Line
         Line
         
         
         ans =
         
         'matlab.graphics.primitive.Text'
         
         
         n =
         
         4
         
         Error using char
         Conversion to char from matlab.graphics.primitive.Text is not possible.

Answer 1

[Jason]

Heres the full answer:

            clc;
            ax=app.UIAxes;
            b=ax.Children;    % b(1) is last object added to uiaxes
            n=numel(b);
            ReportMessage(app,'******* Graphics Objects [RGB]  (1=newest) *******');
            for i=1:n                
                T=b(i).Type;      % Get object type (i.e. line, text)
                C=b(i).Color;     % Get colour of object [R G B] format       
                ReportMessage(app,[num2str(i),': ',T,',   color: ',num2str(C)]);
            end    
            drawnow;

Answer 2

[Mario Malic]

Hello,

Text is a component(object) and it has String property which contains the actual text. Keep in mind that b is an array and you will have to get the text component only as other elements do not have the same properties. Correct way in your case should be

b(1).String

You can also use findall function just to find objects of particular type in your graphic objects.

[Jason]

Hi, thanks for your post. So I have tried your suggestion:

clc;
ax=app.UIAxes;
b=ax.Children    % b(1) is last object added to uiaxes
class(b(1))
n=numel(b);
for i=1:n
    ReportMessage(app,'******* Graphics Objects *******');
    ReportMessage(app,b(i).String);
end   

But get the following:

Unrecognized method, property, or field 'String' for class 'matlab.graphics.chart.primitive.Line'.

[Jason]

It looks like "Type" is what I need i.e.

ReportMessage(app,b(i).Type);