library(grwat)
data(spas) # example Spas-Zagorye data is included with grwat package
# separate
sep = gr_separate(spas, params = gr_get_params(reg = 'center'))
# summarize from 1965 to 1990
vars = gr_summarize(sep, 1965, 1990)
# plot periods with fixed change year
gr_plot_periods(vars, Qygr, year = 1978)
# plot periods with change year from Pettitt test
gr_plot_periods(vars, Qygr, tests = TRUE)
# calculate test beforehand
tests = gr_test_vars(vars)
gr_plot_periods(vars, Qspmax, tests = tests)
# use matrix layout to plot multiple variables
gr_plot_periods(vars, Qygr, Qspmax, D10w1, Wsprngr,
layout = matrix(1:4, nrow = 2),
tests = tests)
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