Xtick location is not correct

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MINA 2016-6-1

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/286881-xtick-location-is-not-correct

评论： dpb 2016-6-2

speed.jpg

Hello,

I have two plots on one figure, which is shown in the attachment. The X tick for both of the the plots should be in the same location but they are not. Could someone please help me how I can fix this problem.

Thanks

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MINA 2016-6-1

编辑：dpb 2016-6-2

在 MATLAB Online 中打开

   ax1 = gca;
   get(ax1,'Position');
   set(ax1,'XColor','white',...
           'YColor','white',...
           'XTick',[],'XTickLabel',[]);
   set(get(ax1, 'Ylabel'), 'String', 'Trials #','fontsize',10);
   set(get(ax1, 'Xlabel'), 'String', 'Time (s)','fontsize',10);
   ax2 = axes('Position',get(ax1,'Position'),...
              'XAxisLocation','top',...
              'YAxisLocation','right',...
              'Color','none',...
              'XColor','white',...
              'YColor','white',...
              'XTick',[0:16],'XTickLabel',[0:16]);
   set(get(ax2, 'Ylabel'), 'String', 'Average Speed (cm/s)','fontsize',10);

dpb 2016-6-2

在 MATLAB Online 中打开

   ax1 = gca;    % be better to
   ax(1)=axes;   % create axes/save handle instead of gca
   set(ax(1),'XColor','white',...
             'YColor','white',...
             'XTick',[],'XTickLabel',[]);
   ylabel(ax(1),'Trials #','fontsize',10);
   xlabel(ax(1),'Time (s)','fontsize',10);
   ax(2)=axes('Position',get(ax(1),'Position'),...
              'XAxisLocation','top',...
              'YAxisLocation','right',...
              'Color','none',...
              'XColor','white',...
              'YColor','white',...
              'XTick',[0:16]);
   ylabel(ax(2),'Average Speed (cm/s)','fontsize',10);

What you're missing above is setting xlim to match the 'xtick' and then linking the two x-axes

linkaxes(ax,'x')   % link the two x-axes to keep in synch
xlim(ax(2),[0 16]) % now set the limits to match where tried put ticks

Also notice used array to hold the handles instead of named variables--this way when need both can use the array name instead of building vector (in, say linkaxes)

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Answer 1

dpb 2016-6-1

0
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/286881-xtick-location-is-not-correct#answer_224186

在 MATLAB Online 中打开

You'll have to set the two axes xlim ranges to a consistent set of ticks and range. It's difficult to interpret but I guess both axes are actually time and the Speed is supposed to be a Title, not an axis label? If that is so, look at

doc linkaxes % to connect the two so they stay in synch irregardless of what do to one or t'other.

It's always easier to give more precise information when the code that generated the figure is shown; often experienced users here can spot "issues" causing such problems that aren't so apparent to the neophyte (else't they wouldn't have to be asking now, would they? :) )