spatial_vhi: Vegetation Health Index (VHI; Kogan 1995)
In obaezvil/SpatIndex: Calculate spatially distributed hydroclimatological indices
View source: R/Agricultural_drought.R
spatial_vhi R Documentation
Vegetation Health Index (VHI; Kogan 1995)
Description
Vegetation Health Index (VHI; Kogan 1995)
Usage
spatial_vhi(VCI_data, TCI_data, alpha = 0.5, resampling2low = TRUE)
Arguments
VCI_data
'SpatRaster' object that contains spatially-distributed VCI data that will be used to calculate the VHI.
This 'SpatRaster' must include the time that corresponds to the dates of the respective layers. They can be set with the function time
of the terra package.
TCI_data
'SpatRaster' object that contains spatially-distributed TCI data that will be used to calculate the VHI.
This 'SpatRaster' must include the time that corresponds to the dates of the respective layers. They can be set with the function time
of the terra package.
@param alpha empirical weight that is applied to the VCI (set to 0.5). Please note that the weight of TCI is 1 - alpha.
Value
Spatially-distributed VHI values.
obaezvil/SpatIndex documentation built on Aug. 9, 2024, 3:42 p.m.
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View source: R/Agricultural_drought.R
| spatial_vhi | R Documentation |
Vegetation Health Index (VHI; Kogan 1995)
Description
Vegetation Health Index (VHI; Kogan 1995)
Usage
spatial_vhi(VCI_data, TCI_data, alpha = 0.5, resampling2low = TRUE)
Arguments
VCI_data |
'SpatRaster' object that contains spatially-distributed VCI data that will be used to calculate the VHI. This 'SpatRaster' must include the time that corresponds to the dates of the respective layers. They can be set with the function time of the terra package. |
TCI_data |
'SpatRaster' object that contains spatially-distributed TCI data that will be used to calculate the VHI. This 'SpatRaster' must include the time that corresponds to the dates of the respective layers. They can be set with the function time of the terra package. @param alpha empirical weight that is applied to the VCI (set to 0.5). Please note that the weight of TCI is 1 - alpha. |
Value
Spatially-distributed VHI values.
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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