x2 and y2 not plotting as expected

Code is following

clear all; close all; clc; 
% Arbitrary x's and y's
x1 = [10 20 30 40];
y1 = [1 2 3 4];
x2 = [100 200 300 400];
y2 = [105 95 85 75];
figure
plot(x1,y1,'o', 'MarkerEdgeColor', 'r', 'MarkerFaceColor', 'r')
ax2 = axes('Color','none'); % Create secondary axis
plot(ax2, x2,y2,'o', 'MarkerEdgeColor', 'b', 'MarkerFaceColor', 'b')
% Now set the secondary axis attributes
ax2.Color = 'none'; % Make the chart area transparent
ax2.XAxisLocation = 'top'; % Move the secondary x axis to the top
ax2.YAxisLocation = 'right'; % Move

i get the output

but i am looking for this output

x2 and y2 are not plotting properly.where am i going wrong?

[Guillaume]

Which version of matlab?

Your code works fine for me.

[Jan]

Works fin in R2015b.

Answer 1

[Steven Lord]

You don't need to manually plot two axes. Use yyaxis (or for older releases that don't have yyaxis, use plotyy) instead.

Answer 2

[Kathy]

MATLAB Version: 8.3.0.532 (R2014a)