2-d graph with two different axis showing different min and max MATLAB

Question

I have the graph below I need to create two different x-axis. The unique part of this problem is where the min and max values need to be located. The range for is 0-100 for both, however the 100% value on the second x-axis needs to be where the 50% value is on the first. See the picture for clarification. The red is what I need to add using MATLAB.

I did a lot of looking and while it's very simple to put two different axis on one graph, I couldn't find a solution for this particular problem. I'd like this to be done in the code and not plot tools.

Answer 1

How about this

% dummy data
y = 1:80; 
x1 = 100*sin( 4*pi*y/80 ).^2 ;  
x2 = 100*cos( 5*pi*y/80).^2; 

Plot the first line

figure; 
line( x1, y, 'Color', 'b', 'LineWidth', 2 );

Get position and size of first plot

haxes1 = gca; 
haxes1_pos = get(haxes1,'Position');

set the 100% of second plot to 50% of first ("tweaking" the width of the axis)

haxes1_pos(3) = haxes1_pos(3)/2; 
haxes2 = axes('Position',haxes1_pos,'XAxisLocation','top','Color','none','XColor','r');

Plot the second line

line( x2, y, 'Color', 'k', 'LineWidth',2,'Parent',haxes2);

And this is what you get