How to automatically increase page size in exportgraphics?

I have the following code, which creates the attached image:

                f = figure('visible','off');        
                t = tiledlayout(1,2,'Padding','none','TileSpacing','compact');
                t.Units = 'centimeters';
                t.OuterPosition = [0.1 0.1 22 9];

                nexttile;
                heatmap(denormPrimaryGrid,denormSecondaryGrid,gridProbs,...
                    'CellLabelColor','none',...
                    'Colormap',flipud(redgreencmap));
                ax = gca;
                ax.FontSize = 5;
                
                nexttile;
                heatmap(denormPrimaryGrid,denormSecondaryGrid,gridProbs,...
                    'CellLabelColor','none');
                ax = gca;
                ax.FontSize = 5;
                exportgraphics(t,'orig.pdf','BackgroundColor','none','ContentType','vector');

I'd like to enlarge this a bit, so make the following code changes and re-export. But matlab refuses to change the size and just chops off left side:

                f = figure('visible','off');        
                t = tiledlayout(1,2,'Padding','none','TileSpacing','compact');
                t.Units = 'centimeters';
                t.OuterPosition = [0.1 0.1 27 12];

                nexttile;
                heatmap(denormPrimaryGrid,denormSecondaryGrid,gridProbs,...
                    'CellLabelColor','none',...
                    'Colormap',flipud(redgreencmap));
                ax = gca;
                ax.FontSize = 5;
                
                nexttile;
                heatmap(denormPrimaryGrid,denormSecondaryGrid,gridProbs,...
                    'CellLabelColor','none');
                ax = gca;
                ax.FontSize = 5;
                exportgraphics(t,'orig.pdf','BackgroundColor','none','ContentType','vector');

Answer 1

[Nishant Gupta]

Refer to the following link, it might help you:

https://www.mathworks.com/help/matlab/creating_plots/save-figure-at-specific-size-and-resolution.html

[mkarikom]

Thanks