Need to line up two graphs on same plot

2013 7 11
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I am using
[AX,H1,H2] = plotyy(time,Y1,time,Y2);
The x-axis(time) are the same for both. The green and blue graphs in the image both end at the same point, but notice how the green graph starts earlier. I want to line both graphs up so that they have the same starting and ending points. For some of the other graphs I've made, it's done by default. I'm not sure what is different with this set of data...
Any help is appreciated. Thanks! :)

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Azzi Abdelmalek
Azzi Abdelmalek 2013-7-11

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Maybe your data contains Nan values?

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Benson
Benson 2013-7-11
I checked my data and there are no Nan values.
I think the problem is that the plot is using two separate x-axes. If you look closely at the image, there are some additional ticks that shouldn't be there. They are unlabeled because I have set(AX, 'xTickLabel','') in my code. Not sure why it's happening...
Benson
Benson 2013-7-11
编辑：Benson 2013-7-11
figure;
set(0,'DefaultLineMarkerSize',6);
[AX,H1,H2] = plotyy(time,y1,time,y2);
title(['title']);
xlabel('Time (UTC)');
set(AX, 'xTickLabel','')
set(gca,'XTickLabel',{'00:00','01:00','02:00','03:00','04:00'...
'05:00','06:00','07:00','08:00','09:00','10:00','11:00'...
'12:00','13:00','14:00','15:00','16:00','17:00','18:00'...
'19:00','20:00','21:00','22:00','23:00','24:00'});
set(get(AX(1),'Ylabel'),'String','axistitle','Color','black');
set(get(AX(2),'Ylabel'),'String','axistitle','Color','black')
set(AX(1),'ycolor','black')
set(AX(2),'ycolor','black')
set(AX(1),'box','off')
set(H1,'Marker','.')
set(H2,'Marker','.')
legend('legend1', 'legend2')
axis([13 21-Inf Inf]);
Azzi Abdelmalek
Azzi Abdelmalek 2013-7-11
编辑：Azzi Abdelmalek 2013-7-11
If you just write
close
[AX,H1,H2] = plotyy(time,y1,time,y2);
What do you get?
Benson
Benson 2013-7-11
编辑：Azzi Abdelmalek 2013-7-11
Interesting, the axes are lined up the way I want it to be.
Benson
Benson 2013-7-11
编辑：Benson 2013-7-11
So by trial and error, I found that this line is causing the shift. axis([13 21-Inf Inf]);

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