Transition-class {OpenLand}

Class Transition

Description

A S4 class for the Transition level result of an Intensity analysis. Can be plotted with the plot method plot.

Details

The slots transitionData and transitionStationarity can receive tables for "Gain of category n" or "Loss of category m" in the following format:

1. Gain of category n:

   • transitionData: <tibble>. A table with 7 columns:

     1. Period: <fct>. The period [Yt, Yt+1].

     2. From: <fct>. A category i.

     3. To: <fct>. The gaining category in the transition of interest (n).

     4. Interval: <int>. Duration of the period [Yt, Yt+1].

     5. T_i2n_km2/T_i2n_pixel: <dbl>. Area with transition from category i to category n during time interval [Yt, Yt+1] where i is not equal to n.

     6. Rtin: <dbl>. Annual intensity of transition from category i to category n during time interval [Yt, Yt+1] where i is not equal to n.

     7. Wtn: <dbl>. Value of the uniform intensity of the transition to category n from all non-n categories at time Yt during time interval [Yt, Yt+1].

   • transitionStationarity: <tibble>. A table containing results of a stationarity test over the gain on category n containing 5 columns:

     1. From: <fct>. The losing category in the transition of interest to the category n.

     2. loss: <int>. Number of times the category had losses to the category n.

     3. N: <int>. Total number of transitions to be considered as stationary (T).

     4. Stationarity: <chr>. targeted by or avoided by the category n.

     5. Test: <chr>. Y for stationarity detected and N when not.

2. Loss of category m:

   • transitionData: <tibble>. A table with 7 columns:

     1. Period: <fct>. The period [Yt, Yt+1].

     2. To: <fct>. A category j.

     3. From: <fct>. The losing category in the transition of interest (m).

     4. Interval: <dbl>. Duration of the period [Yt, Yt+1].

     5. T_m2j_km2/T_m2j_pixel: <dbl>. Area with transition from category m to category j during time interval [Yt, Yt+1] where j is not equal to m.

     6. Qtmj: <dbl>. Annual intensity of transition from category m to category j during time interval [Yt, Yt+1] where j is not equal to m.

     7. Vtm: <dbl>. Value of the uniform intensity of the transition from category m to all non-m categories at time Y_t+1 during time interval [Yt, Yt+1].

   • transitionStationarity: <tibble>. A table containing results of a stationarity test over the loss of category m containing 5 columns:

     1. To: <fct>. The gaining category in the transition of interest from the category m.

     2. gain: <int>. Number of times the category had gains from the category m.

     3. N: <int>. Total number of transitions to be considered as stationary (T).

     4. Stationarity: <chr>. targeted or avoided the category m.

     5. Test: <chr>. Y for stationarity detected and N when not.

Slots

lookupcolor

The colors (character vector) associated with the LUC legend items.

transitionData

tibble. A table of Transition level's results (gain n (Rtin & Wtn) or loss m (Qtmj & Vtm) values).

transitionStationarity

tibble. A table containing results of a stationarity test. A change is considered stationary only if the intensities for all time intervals reside on one side of the uniform intensity, i.e are smaller or bigger than the uniform rate over the whole period.