Saving image in full screen with TiledLayout

Question

编辑： Dave B 2021-8-27

With reference to this post: Saving a figure in full screen size? - MATLAB Answers - MATLAB Central (mathworks.com), I want to save a figure using the save function by forcing it to size it to my screen. This works with the post mentioned when using figure, but when using tiledLayout as:

t=tiledlayout(1,2,'Position',get(0,'Screensize'));
% plot goes here%
F    = getframe(t);
saveas(F.data,'my_plot.jpg','jpg');

I get the following error:

Error using getframe (line 2)
A valid figure or axes handle must be specified
Error in plot_test (line
3)
F    = getframe(t);

Answer 1

Dave B 2021-8-27

Could you set the figure position to be fullscreen, and keep the tiledlayout at the default (which occupies the full figure window)?

fig = figure('Position', get(0, 'Screensize'));
t=tiledlayout(1,2);
% plot goes here%
F    = getframe(fig);
imwrite(F.cdata, 'my_plot.jpg', 'jpg')

Dave B 2021-8-27

编辑：Dave B 2021-8-27

(note that if you set tiledlayout's 'Padding' property to 'none' there won't be a border between the layout and the figure)

figure

set(gcf,'Color',[.8 .8 .8])

t=tiledlayout(2,2);

for i = 1:4;nexttile;end

figure

set(gcf,'Color',[.8 .8 .8])

t=tiledlayout(2,2,'Padding','none');

for i = 1:4;nexttile;end