How to plot two graphs with different x axes on the same graph without using tiled layout?

I am trying to overlay two sets of data, one with pixels as x axis and the other wavenumbers. I have tried the tiled layout and they work beautifully in MatLab, however, when exporting these graphs as images only one of the plots is exported/copied. Is there another way of achieving this? Thank you!

Above: Figure as seen in MatLab

Below: Figure exported

[Rik]

Have you tried creating two axes objects in the same place? It takes some careful tweaking to make sure no parts overlap, but it tends to export as expected.

Answer 1

[Cris LaPierre]

The plot created by the following example appears to export correctly

• Display Data with Multiple x-Axes and y-Axes

x1 = 0:0.1:40;
y1 = 4.*cos(x1)./(x1+2);
x2 = 1:0.2:20;
y2 = x2.^2./x2.^3;

t = tiledlayout(1,1);
ax1 = axes(t);
plot(ax1,x1,y1,'-r')
ax1.XColor = 'r';
ax1.YColor = 'r';
ax2 = axes(t);
plot(ax2,x2,y2,'-k')
ax2.XAxisLocation = 'top';
ax2.YAxisLocation = 'right';
ax2.Color = 'none';
ax1.Box = 'off';
ax2.Box = 'off';

% Export the plot
exportgraphics(gcf,'multipleAxes.png')

Here is the image that gets exported

[Meiyue]

Thank you very much! I will give this a go