Plot year as major ticks and months as minor ticks

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Chris McGibbon 2021-6-16

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评论： Chris McGibbon 2021-6-18

I haves several years worth of time series data and I want to plot the major ticks as years, with labels and mior ticks as months with no labels. I can see how to plot major and minor ticks, but not with date/time data.

Thanks.

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Answer 1

dpb 2021-6-16

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If your time data are evenly-spaced and at monthly intervals,

hAx=gca; hX=hAx.XAxis;          % get handle to X datetime ruler object
xt=hX.TickValues;               % get the tick values; presuming are yearly by default
isYr=(mod(1:numel(xt),12)==1);  % the indices to the year tick locations
hX.MinorTickValues=xt(~isYr);   % write the monthly dates as minor ticks

If your data aren't regular or don't begin precisely on the first of the year, then use create a regular monthly timeseries between the XLIM values of the axis and write those similarly.

It does seem as though the datetimeRuler could/should have a 'monthly' and various other named intervals to use to specify the common labeling that one would want similar to the options in 'retime'