For 2 curves, how to have xticks on both the above and below of x-axis?

Hi all, I plot the attached figure using this code

clear; clc;

x1 = [1 3 5 7];
x2 = [1 2 4 7];

data1 = [1 2 3 4];
data2 = [4 3 2 1];

hAx1 = semilogy(x1, data1, 'b-^');
hold on
hAx2 = semilogy(x2, data2, 'k-v');

I'd like to have x1 on top and x2 on below of the x-axis using xticks, so the figure would show (1 3 5 7) on the below of x-axis with blue numbers and show (1 2 4 7) on the top of the x-axis with black numbers. Such that the 2 curves are differentiated.

Many thanks!

Answer 1

[Akira Agata]

The following is one way to do that. Please see the following link for more details.

Create Chart with Multiple x-Axes and y-Axes

hAx1 = semilogy(x1, data1, 'b-^');
hold on
hAx2 = semilogy(x2, data2, 'k-v');
ax1 = gca;
ax1.XColor = 'b';
ax1.XTick = [1 3 5 7];
ax2 = axes(...
'Position',       ax1.Position,...
'XAxisLocation',  'top',...
'Color',          'none',...
'YTick',          [],...
'XLim',           [1 7],...
'XTick',          [1 2 4 7]);

[Xiaohan Du]

How to get rid of the extra scale on the top x axis and right y axis?

Answer 2

[the cyclist]

The easiest way to get something close to what you want is to use the yyaxis command. Take a look at the examples there.