LongTermChange: LongTermChange

In LPDynR: Land Productivity Dynamics Indicator

LongTermChange

Description

LongTermChange combines the Steadiness Index with the baseline levels of land productivity and with the change of state along the time series, resulting in a 22-class object (see details)

Usage

LongTermChange(
  SteadinessIndex = NULL,
  BaselineLevels = NULL,
  StateChange = NULL,
  filename = ""
)

Arguments

SteadinessIndex	SpatRaster object (or its file name). Steadiness Index (4-class)
BaselineLevels	SpatRaster object (or its file name). Baseline levels of land productivity (beginning of time series; 3-class)
StateChange	SpatRaster object (or its file name). Change of state of land productivity (beginning minus end of time series; 3-class)
filename	Character. Output filename. Optional

Details

St1-low-No Change <- 1

St1-low-Change 1 categ <- 2

St1-low-Change 2 or more categs <- 3

St1-medium-No Change <- 4

St1-medium-Change 1 categ <- 5

St1-medium-Change 2 or more categs <- 6

St1-high-No Change <- 7

St1-high-Change 1 categ <- 8

St1-high-Change 2 or more categs <- 9

St2-low-No Change <- 10

St2-low-Change 1 categ <- 10

St2-low-Change 2 or more categs <- 10

St2-medium-No Change <- 11

St2-medium-Change 1 categ <- 11

St2-medium-Change 2 or more categs <- 11

St2-high-No Change <- 12

St2-high-Change 1 categ <- 12

St2-high-Change 2 or more categs <- 12

St3-low-No Change <- 13

St3-low-Change 1 categ <- 13

St3-low-Change 2 or more categs <- 13

St3-medium-No Change <- 14

St3-medium-Change 1 categ <- 14

St3-medium-Change 2 or more categs <- 14

St3-high-No Change <- 15

St3-high-Change 1 categ <- 15

St3-high-Change 2 or more categs <- 15

St4-low-No Change <- 16

St4-low-Change 1 categ <- 17

St4-low-Change 2 or more categs <- 18

St4-medium-No Change <- 19

St4-medium-Change 1 categ <- 20

St4-medium-Change 2 or more categs <- 21

St4-high-No Change <- 22

St4-high-Change 1 categ <- 22

St4-high-Change 2 or more categs <- 22

Values = 0 in the final map indicates that there is a scarcity of data in the productivity variable (i.e. only 1 year with data), so that the indicator cannot be calculated

Value

SpatRaster object

Author(s)

Xavier Rotllan-Puig

See Also

steadiness, baseline_lev, state_change

Examples

sb <- terra::rast(paste0(system.file(package='LPDynR'), "/extdata/sb_cat.tif"))
SteadinessIndex_raster <- steadiness(obj2process = sb)
BaselineLevels_raster <- baseline_lev(obj2process = sb,
                                      yearsBaseline = 3,
                                      drylandProp = 0.4)
StateChange_raster <- state_change(obj2process = sb,
                                   yearsBaseline = 3)

LongTermChange(SteadinessIndex = SteadinessIndex_raster,
               BaselineLevels = BaselineLevels_raster,
               StateChange = StateChange_raster)

LPDynR documentation built on Oct. 16, 2023, 5:06 p.m.