make_weeks_list: Make a list of numbered weeks

In modiscloud: R tools for processing Level 2 Cloud Mask products from MODIS

Description

Make a list of weeks for a given number of days.

Usage

  make_weeks_list(numweeks = 53)

Arguments

numweeks

Number of weeks you would like to get the daily week categories for. Default is 53 weeks, i.e. 53*7 = 371 days.

Details

E.g., for 15 days,

make_weeks_list(numweeks=17)

...would return:

week1
week1
week1
week1
week1
week1
week1
week2
week2
week2
week2
week2
week2
week2
week3
week3
week3

This is useful for categorizing e.g. daily satellite data by week.

Value

weeks_list, a list of the week category that each day falls into

Author(s)

Nicholas J. Matzke [e-mail]

References

NASA (2001). "MODLAND Product Filename Convention." <URL: http://landweb.nascom.nasa.gov/cgi-bin/QA_WWW/newPage.cgi?fileName=hdf_filename>.

Examples

# Make the weeks_list
weeks_list = make_weeks_list(numweeks=53)
weeks_list

# Which week category you are in
day=1
weeks_list[day]
day=8
weeks_list[day]
day=100
weeks_list[day]
day=366
weeks_list[day]

modiscloud documentation built on May 2, 2019, 5:16 a.m.