cropDemand (version 1.0.3)

loadROI: Load image data to do crop water demand

Description

This fuction will load the evapotranspiration and rainfall data for the region of interest (ROI).

Usage

loadROI(variable, region, sub_region)

Value

Load the reference evapotranspiration (eto) or rainfall (ppt) SpatRaster

Arguments

variable

Stack of evapotranspiration or rainfall (SpatRaster).

region

Use the "brazil" shp file to extract the SpatRaster (variable) for one state (Brazilian state), or use the "biomes_brazil" to extract the SpatRaster (variable) for one biome of Brazil.

sub_region

You have two options in this section, if you choice the brazil (in region parameter) you need to choice the Brazilian states, but if you choice the biomes-brazil (in region parameter) you must choice one of Brazilian biomes.

References

The images used in this package can be found in the paper: Abatzoglou, J.T., S.Z. Dobrowski, S.A. Parks, K.C. Hegewisch, 2018, Terraclimate, a high-resolution global dataset of monthly climate and climatic water balance from 1958-2015, Scientific Data.

Examples

if (FALSE) {
#For Brazilian states

see_brazil_states()

image_etp<-loadROI(variable = "eto", region = "brazil",
                    sub_region = 13) # sub_regions 1:27

image_rainfall<-loadROI(variable = "ppt",
                        region = "brazil", sub_region = 13)

#For Brazilian Biomes:

see_brazil_biomes()

image_tmin<- loadROI(variable = "eto", region = "biomes_brazil",
                      sub_region = 2)# sub regions: 1:6 (biomes)

}