how to label second x and y axes

hello guys

in the following code, i don't know how to label the x axis on the top and the y axis that's on the right

anybody have a idea?

thank you

clear all

clc

subplot(2,2,4)

x1 = linspace(0,100,101);

y1 = 2*x1;

x2=3*x1;

y2=4*x1;

plot(x1,y1)

xlabel('x1')

ylabel('y1')

hAx(1)=gca;

hAx(2)=axes('Position',hAx(1).Position,'XAxisLocation','top','xlim',[x2(1) x2(end)],'YAxisLocation','right','ylim',[y2(1) y2(end)],'color','none');

uistack(hAx(2), 'bottom')

Answer 1

[Cris LaPierre]

Use the following syntax with hAx(2) as your target.

xlabel(target,txt)

plot(1:100)
xlabel('x1')
ylabel('y1')
hAx(1)=gca;
hAx(2)=axes('Position',hAx(1).Position,'XAxisLocation','top','xlim',[0 300],'YAxisLocation','right','ylim',[0 400],'color','none');
uistack(hAx(2), 'bottom')

xlabel(hAx(2),'x2')
ylabel(hAx(2),'y2')

[Rabih Sokhen]

thanks you