PlotYY X axis doubled

Asked by ACHOURI ANAS on 25 Jun 2013

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Hello,

Can someone please let me know how can avoid to have the X axis doubled when i use the command PlotYY ?

I use PlotYY to plot two curves that have a different Y axis for each one, and the same X axis.

So my problem, is that the X axis appears twice in the graph, and then it is hard to read the X graduation.

Best,

Anas

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3 Answers

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Answer by Zhongxian pan on 19 Aug 2013

linkaxes(AX,'x');

set(AX(2),'XTickLabel',[]);

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Answer by Leah on 25 Jun 2013

you can turn it off by then you won't know if your xaxis consistent for each y axis. it's best to make them match

turn off (not advised)

   [AX,H1,H2] = plotyy(...);
    set(AX(2),'xticklab',[],'xtick',[])

make match

set(AX(2),'xtick',get(AX(1),'xtick'),'xticklab',get(AX(1),'xticklab'))

3 Comments

ACHOURI ANAS on 25 Jun 2013

Thank you very much, is it possible to move out the line axis too ? because even if the graduation is not doubled anymore, the X axis line is still doubled.

Leah on 25 Jun 2013

the horizontal line or the tick marks?

ACHOURI ANAS on 26 Jun 2013

the tick marks are not doubled anymore, but the horizontal line is still doubled at the bottom of the plot.

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Answer by Tom on 25 Jun 2013

Moving one x axis to the top might make things clearer

AX = plotyy(...);
set(AX(2),'XAxisLocation','Top')

3 Comments

ACHOURI ANAS on 25 Jun 2013

thank you very much, it is a great idea, but the title become hidden by the x axis label on the top. is it possible to move the title label above the second X axis ?

Tom on 25 Jun 2013

You can, though it might start to go off the top of the figure, so then you'd need to move the axes down (basically, it might get messy).

Try:

set(AX(2),'XAxisLocation','Top')
hTitle = title(AX(2),'Title String');
Pos = get(hTitle,'Position');
Pos(2) = Pos(2)*1.02; %increase the height by 2%
set(hTitle,'Position',Pos)

ACHOURI ANAS on 26 Jun 2013

ok, thank you very much

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