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Date to Decimal Day of Year

version 1.2.0.0 (1.62 KB) by Anthony Kendall
Convert a vector of MATLAB serial dates to decimal days since the start of the year.

4.2K Downloads

Updated 28 Apr 2009

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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.

Cite As

Anthony Kendall (2021). Date to Decimal Day of Year (https://www.mathworks.com/matlabcentral/fileexchange/18316-date-to-decimal-day-of-year), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2007a
Compatible with any release
Platform Compatibility
Windows macOS Linux
Acknowledgements

Inspired: Day of Year to MATLAB date, deseason

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