Creating an app using Matlabs App designer, need help displaying images in the app from and API.

I would like to display an image of the countries flag in the app associated to the name of the country selected in the drop down list. I can't seem to get it to work. This is my attempt so far, the image is in the API as a png file. The other fields populate, but the image will not.

    data = webread('https://restcountries.com/v3.1/all');
             
            val = app.Country_Select.Value;
            switch val
                  case 'Jordan'
                       app.SpokenLanguageEditField.Value = data{1,1}.languages.ara;
                       app.PopulationSizeEditField.Value = data{1,1}.population;
                       app.AreaEditField.Value = data{1,1}.area;
                       app.RegionEditField.Value = data{1,1}.region;
                       app.Flagimage.ImageSource = (data{1,1}.flags.png);
            end        
                    

Answer 1

[Walter Roberson]

[im, cmap] = imread(app.Flagimage.ImageSource);
if isempty(cmap)
    if ndims(im) == 2
        im = im(:,:,[1 1 1]);  %gray to rgb
    end
else
    im = ind2rgb(im, cmap);
end
app.Flagimage.image = im;

[Aaron]

I'm recieving an erroe using this code "Error using imread. File does not exist.

[Walter Roberson]

It works when I test it.

data = webread('https://restcountries.com/v3.1/all');
val = 'Jordan';

switch val
      case 'Jordan'
           app.SpokenLanguageEditField.Value = data{1,1}.languages.ara;
           app.PopulationSizeEditField.Value = data{1,1}.population;
           app.AreaEditField.Value = data{1,1}.area;
           app.RegionEditField.Value = data{1,1}.region;
           app.Flagimage.ImageSource = (data{1,1}.flags.png);
end  

[im, cmap] = imread(app.Flagimage.ImageSource);
if isempty(cmap)
    if ndims(im) == 2
        im = im(:,:,[1 1 1]);  %gray to rgb
    end
else
    im = ind2rgb(im, cmap);
end
app.Flagimage.image = im;

imshow(app.Flagimage.image)