extractDateFilename: Estract dates from filenames

In phenopix: Process Digital Images of a Vegetation Cover

Description

This function extracts dates from filenames.

Usage

extractDateFilename(filename, date.code)

Arguments

filename	The filename where to retrieve time stamp
date.code	The format of your date in filename, see details.

Details

This function allows the extraction of the date (hour, doy, dayfract) from the filename. The only mandatory rules are (1) that site name come first and date after and (2) sitename and date must be separated by an underscore. In date.code provide the format of your date, using lower letters for year (y) month (m) and day (d) and upper letters for hour (H) and minute (M). As an example: If your file is named: 'sitename_2012_03_03_15-30.jpg' than your date.code is "yyyy_mm_dd_HH-MM". If your file is named 'sitename_12.03.03.1530.jpg' than your date.code is "yy.mm.dd.HHMM" If hours and minutes are missing in your filename, convertion defaults to 12:00.

Value

A POSIX string containing date,Hour,DOY,DOY.dayfract of the entire images time series

Author(s)

Edoardo Cremonese <[e-mail]>

phenopix documentation built on May 2, 2019, 4:50 p.m.