Plot runoff ACF — gr_plot

The function plots the autocorrelation function (ACF) for daily runoff time series. A number of days corresponding to the specified autocorr value is highlighted.

Usage

gr_plot_acf(hdata, autocorr = 0.7, maxlag = 30, print = TRUE)

Arguments

hdata: data.frame with first column as Date and the second column as runoff
autocorr: Numeric value of the autocorrelation for which the time period will be highlighted. Defaults to 0.7.
maxlag: Integer value of the maximum daily lag used to calculate the correlation. Defaults to 30.
print: Boolean. Print plot? Defaults to TRUE. Use FALSE if you want to tweak the plot aesthetics before plotting.

Value

ggplot2 object representing the autocorrelation function (ACF) for daily runoff time series

Examples

library(grwat)

# example Spas-Zagorye data is included with grwat package
data(spas)
head(spas)
#> # A tibble: 6 × 4
#>   Date           Q   Temp  Prec
#>   <date>     <dbl>  <dbl> <dbl>
#> 1 1956-01-01  5.18  -6.46 0.453
#> 2 1956-01-02  5.18 -11.4  0.825
#> 3 1956-01-03  5.44 -10.7  0.26 
#> 4 1956-01-04  5.44  -8.05 0.397
#> 5 1956-01-05  5.44 -11.7  0.102
#> 6 1956-01-06  5.58 -20.1  0.032

# plot ACF
gr_plot_acf(spas, 0.65)