in my assignment, i am asked to "State the autocorrelation time for each variable" (of which i have 2). I have just created 2 time series graphs for 2 datasets for context. I am very confused as to what this means. Please help?
load("RiverData50.mat")
x = RiverData(:,1); % daily discharge of riverdata
x2 = x(1:365); % first 365 days of daily discharge
y = RiverData(:,2); % daily rainfall of riverdata
y2 = y(1:365); % first 365 days of daily rainfall
ts1 = timeseries(x2,1:365);
ts1.Name = 'Daily Discharge (M^3/s)';
ts1.TimeInfo.Units = 'Days';
ts1.TimeInfo.StartDate = '1-Oct-1990'; % start date.
ts1.TimeInfo.Format = 'mmm dd, yy'; % Set format for display on x-axis.
ts1.Time = ts1.Time - ts1.Time(1); % Express time relative to the start date.
ts2 = timeseries(y2,1:365);
ts2.Name = 'Daily Rainfall (mm)';
ts2.TimeInfo.Units = 'Days';
ts2.TimeInfo.StartDate = '1-Oct-1990'; % Setting start date.
ts2.TimeInfo.Format = 'mmm dd, yy'; % Setting format for display on x-axis.
ts2.Time = ts2.Time - ts2.Time(1); % Express time relative to the start date.
subplot(2,1,1)
plot(ts1)
subplot(2,1,2)
plot(ts2)
(my code, if that helps with context at all)
