Date to Decimal Day of Year

版本 1.2.0.0 (1.6 KB) 作者: Anthony Kendall
Convert a vector of MATLAB serial dates to decimal days since the start of the year.
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更新时间 2009/4/28

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This function calculates the decimal day of the year of the input vector of dates. The dates must be in MATLAB serial date format.

For example, for datestr(now), MATLAB produces: "18-Jan-2008 14:33:27". The output of this function, called "date2doy" yields-
date2doy(now): "18.60662".

There are two outputs, the decimal date (can be a vector), and the fraction of the year completed by that date. From the example above, the fraction of the year is: "0.0481"

This function is very fast, and is ideal for embedding in larger applications that call date2doy many times.

引用格式

Anthony Kendall (2024). Date to Decimal Day of Year (https://www.mathworks.com/matlabcentral/fileexchange/18316-date-to-decimal-day-of-year), MATLAB Central File Exchange. 检索来源 .

MATLAB 版本兼容性
创建方式 R2007a
兼容任何版本
平台兼容性
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在 Help Center 和 MATLAB Answers 中查找有关 Dates and Time 的更多信息
致谢

启发作品: Day of Year to MATLAB date, deseason

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版本 已发布 发行说明
1.2.0.0

Submitted modified file to FEX as detailed in file description.
1.0.0.0

In response to James' review, I've heavily modified this function and taken all of his suggestions. Also, the calculation, while simple, is not as trivial as James mentions.