plotyy xaxis not aligned with 'keeptick' and datenum

Question

nori 2012-4-27

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/36755-plotyy-xaxis-not-aligned-with-keeptick-and-datenum

good afternoon matlabers! so i have been trying to plot 2 datasets with different y-axis using plotyy and to have the date displayed on the x-axis. when i plot the data using the below code, the x-axis is not aligned.

but if i remove the datetick and just use time = linspace(1,12,12); everything works fine.

any suggestions?

y1 = rand(12,1);
y2 = rand(12,1);
startDate = datenum('01-01-2010');
endDate = datenum('12-31-2010');
time = linspace(startDate,endDate,12);
% time = linspace(1,12,12);
figure
hold on 
set(gca,'XTick',time, 'XMinorTick', 'on','XGrid','on')
datetick('x','yyyy/mmm','keepticks')
plotyy (time,y1,time,y2)

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Answer 1

Thomas 2012-4-27

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/36755-plotyy-xaxis-not-aligned-with-keeptick-and-datenum#answer_45964

在 MATLAB Online 中打开

Clear the XTickLabel before using datetick.. remove hold.. That should solve the problem..

y1 = rand(12,1);
y2 = rand(12,1);
startDate = datenum('01-01-2010');
endDate = datenum('12-31-2010');
time = linspace(startDate,endDate,12);
% time = linspace(1,12,12);
figure
% hold on 
set(gca,'XTick',time, 'XMinorTick', 'on','XGrid','on')
[AX,H1,H2]=plotyy (time,y1,time,y2)
set(AX,'XTickLabel',[])
datetick('x','yyyy/mmm','keepticks')

EDIT This takes care of the ticks coming out wrong..

y1 = rand(12,1);
y2 = rand(12,1);
startDate = datenum('01-01-2010');
endDate = datenum('12-31-2010');
time = linspace(startDate,endDate,12);
% time = linspace(1,12,12);
figure
%hold on 
[AX,H1,H2]=plotyy (time,y1,time,y2)
set(AX,'Xtick',[],'XTickLabel',[],'Xlim',[min(time) max(time)])
set(gca,'Xtick',time,'XGrid','on')
datetick('x','mmm','keepticks')