convertNGVD: Convert between feet NAVD88 and feet NGVD29

In troyhill/EvergladesEBM: Everglades Ecosystem-Based Management

Convert between feet NAVD88 and feet NGVD29

Description

a RasterLayer surface of elevations NAVD88 rel to NGVD29. Units = feet. to convert NAVD88 to NGVD29, add this. subtract from NGVD29 to get NAVD88.

Format

RasterLayer

Examples

 
## Not run: 
### code used to generate object 
# load("C:/RDATA/EVER4cast/NGVD_to_NAVD.RData") # loads convertNGVD, generated by script
# writeRaster(convertNGVD, file = paste0(here::here(), "/inst/extdata/convertNGVD.grd"))
convertNGVD <- raster::raster(system.file("extdata/convertNGVD.grd", package = "EvergladesEBM")) 
convertNGVD <- raster::readAll(convertNGVD) # store full raster in memory
# save("convertNGVD", file =  paste0(here::here(), "/data/convertNGVD.RData"))


### how to save as a SpatRaster without LazyLoad package compilation errors?
# load("C:/RDATA/EVER4cast/NGVD_to_NAVD.RData") # loads convertNGVD, generated by script
# convertNGVD <- terra::rast(system.file("extdata/convertNGVD.grd", package = "EvergladesEBM"))*1 
# save("convertNGVD", file =  paste0(here::here(), "/data/convertNGVD.RData"))
# terra::writeRaster(convertNGVD, file = paste0(here::here(), "/inst/extdata/convertNGVD.grd"),
# overwrite = TRUE)


## End(Not run)

troyhill/EvergladesEBM documentation built on Nov. 19, 2023, 8:39 a.m.