monthLabs {berryFunctions}

Nicely spaced labels along a month

Description

Create dates of certain days of the month for labeling

Usage

monthLabs(startyear = 2002, stopyear = 2018, npm = 2, npy = NA)

Arguments

startyear

Integer. starting year. DEFAULT: 2002

stopyear

Integer. ending year. DEFAULT: 2018

npm

Integer, one of 1,2,3,6 or 31. Number of labels per month. DEFAULT: 2
npm : days of the month
1 : first day of each month within the given years
2 : 1st and 15th day
3 : 1, 10, 20
6 : 1, 5, 10, 15, 20, 25. 31 : each day

npy

Integer, one of 1,2,3,4 or 6. Number of labels per year at equally spaced month-beginnings. If specified, npm is not considered at all. DEFAULT: NA

Value

Vector with Dates as returned by as.Date.

Note

Spacing of days is not equal, but set to certain days of the month! This was originally developed for time series movie frames

Author(s)

Berry Boessenkool, [e-mail], early 2013

See Also

timeAxis for nice labeling, timeAxis for automatic determination of npm/npy, as.Date, paste

Examples

monthLabs(2014,2014, 3) # 3 days per month
monthLabs(2013,2014,  npy=3) # 3 months per year, equally spaced
monthLabs(2014,2014,  npy=4) # 4 months per year

# see monthAxis for automatic plot labeling