pentadProbs {agroclim}R Documentation

Pentadic probabilities

Description

This function calculates the probability od occurrence of a temperature range in a five-day row (pentad).

Usage

pentadProbs(mx, mn, temp_dates, out = NULL, min_abs = -20,
  max_abs = 44, plot_years = NULL, show_legend = TRUE)

Arguments

mx

vector containing the daily maximum temperature series.

mn

same as mx but with daily minimum temperature series.

temp_dates

sequence of daily dates coinciding with temperature data series.

out

system path to the generated output file ('.pdf').

min_abs

minimum absolute temperature used as threshold to plot data.

max_abs

same as min_abs but with maximum absolute temperature.

plot_years

numeric vector indicating the frequencies of individual years to plot over the averages.

show_legend

logical value indicating wether legend will be shown or not.

Details

The numer of individual years to plot over the average frequencies is unlimited. However, it is recommended to add only a few due to the difficult of reading a lot of information in the same plot.

The colors of the individual years are random, so it is possible to get different colors for same years in two runs of same plot.

Value

If the output path is defined, a pdf file is created.

Examples



# basic plot with legend
 pentadProbs(mx = daily_tmax, mn = daily_tmin,
              temp_dates = seq.Date(as.Date('1981-01-01'),
              as.Date('2010-12-31'), by ='day'),
              out = NULL, min_abs = -20, max_abs = 44,
              plot_years = NULL, show_legend = TRUE)

# years 1981 and 2009 are plotted over the average frequencies
 pentadProbs(mx = daily_tmax, mn = daily_tmin,
              temp_dates = seq.Date(as.Date('1981-01-01'),
              as.Date('2010-12-31'), by ='day'),
              out = NULL, min_abs = -20, max_abs = 44,
              plot_years = c(1981, 2009), show_legend = TRUE)


[Package agroclim version 0.1.0 Index]