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Add SRTM GL1 Ellipsoidal dataset from OpenTopography #82

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Add SRTM GL1 Ellipsoidal dataset from OpenTopography #82

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d9f47b6
Add SRTM GL1 Ellipsoidal
youngdjn Mar 18, 2023
068ab66
Typo fix
youngdjn Mar 18, 2023
c38b4d0
Correct dataset name
youngdjn Mar 18, 2023
c94ae6b
Fix dataset name
youngdjn Mar 18, 2023
24438bd
Save GET request URL
youngdjn Mar 18, 2023
5cc860a
Add gl1e (ellipsoidal)
youngdjn Mar 18, 2023
872d50e
Back to not printing the GET URL
youngdjn Mar 18, 2023
2e789c4
Merge remote-tracking branch 'jhollist/main'
youngdjn Feb 18, 2024
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7 changes: 4 additions & 3 deletions R/get_elev_raster.R
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Original file line number Diff line number Diff line change
Expand Up @@ -19,7 +19,7 @@
#' the prj is optional and will be taken from \code{locations}. This
#' argument is required for a \code{data.frame} of locations.
#' @param src A character indicating which API to use. Currently supports "aws"
#' and "gl3", "gl1", "alos", or "srtm15plus" from the OpenTopography API global
#' and "gl3", "gl1", "gl1e", "alos", or "srtm15plus" from the OpenTopography API global
#' datasets. "aws" is the default.
#' @param expand A numeric value of a distance, in map units, used to expand the
#' bounding box that is used to fetch the terrain tiles. This can
Expand Down Expand Up @@ -86,7 +86,7 @@
#' }

get_elev_raster <- function(locations, z, prj = NULL,
src = c("aws", "gl3", "gl1", "alos", "srtm15plus"),
src = c("aws", "gl3", "gl1", "gl1e", "alos", "srtm15plus"),
expand = NULL, clip = c("tile", "bbox", "locations"),
verbose = TRUE, neg_to_na = FALSE,
override_size_check = FALSE, tmp_dir = tempdir(), ...){
Expand Down Expand Up @@ -129,9 +129,9 @@ get_elev_raster <- function(locations, z, prj = NULL,

# Pass of locations to APIs to get data as raster
if(src == "aws") {
} else if(src %in% c("gl3", "gl1", "gl1e", "alos", "srtm15plus")){
raster_elev <- get_aws_terrain(locations, z, prj = prj, expand = expand,
tmp_dir = tmp_dir, ...)
} else if(src %in% c("gl3", "gl1", "alos", "srtm15plus")){
raster_elev <- get_opentopo(locations, src, prj = prj, expand = expand,
tmp_dir = tmp_dir, ...)
}
Expand Down Expand Up @@ -387,6 +387,7 @@ get_opentopo <- function(locations, src, prj, expand=NULL, tmp_dir = tempdir(),
data_set <- switch(src,
gl3 = "SRTMGL3",
gl1 = "SRTMGL1",
gl1e = "SRTMGL1_E",
alos = "AW3D30",
srtm15plus = "SRTM15Plus")

Expand Down
2 changes: 2 additions & 0 deletions R/internal.R
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Expand Up @@ -211,6 +211,7 @@ estimate_raster_size <- function(locations, prj, src, z = NULL){
aws = 32,
gl3 = 32,
gl1 = 32,
gl1e = 32,
alos = 32,
srtm15plus = 32)
if(src == "aws"){
Expand All @@ -219,6 +220,7 @@ estimate_raster_size <- function(locations, prj, src, z = NULL){
res <- switch(src,
gl3 = 0.0008333,
gl1 = 0.0002778,
gl1e = 0.0002778,
alos = 0.0002778,
srtm15plus = 0.004165)
}
Expand Down