Insert value for the last day of the year

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BdS
BdS 2020-1-27
回答： dpb 2020-1-27
Hi,
enclosed you will find a 1044x1 datetime vector (weekly data).
I would like to create a logical vector containing 1 for the last data point of each year.
Do you have any suggestions?
Thank you for your help.

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dpb
dpb 2020-1-27
May be a neat way with the builtin datetime lookup functions, but first thing that comes to mind is
isyrlast=false(size(dates));
isyrlast(arrayfun(@(y) find(year(dates)==y,1,'last'),unique(year(dates))))=true;

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