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raster helper function edits: attributeList #199

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raster helper function edits: attributeList #199

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b2a78ab
raster helper function edits: attributeList
dvirlar2 Oct 19, 2022
3c23dba
raster helper function edits: coord_name argument
dvirlar2 Oct 20, 2022
908f726
Removed message; redundant with new error message
dvirlar2 Oct 20, 2022
44236e9
Raster function: replaced coordinate origin selections
dvirlar2 Oct 20, 2022
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36 changes: 27 additions & 9 deletions R/eml.R
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Original file line number Diff line number Diff line change
Expand Up @@ -461,29 +461,47 @@ extract_name <- function(x){
#'
#' @param path (char) Path to a raster file
#' @param coord_name (char) horizCoordSysDef name
#' @param attributes (dataTable) attributes for raster
#' @param attributeList (list) Entity attributeList for raster
#'
#'
#' @export
eml_get_raster_metadata <- function(path, coord_name = NULL, attributes){
eml_get_raster_metadata <- function(path, coord_name = NULL, attributeList){

raster_obj <- raster::raster(path)
message(paste("Reading raster object with proj4string of ", raster::crs(raster_obj)@projargs))
# message(paste("Reading raster object with proj4string of ", raster::crs(raster_obj)@projargs))

if (is.null(coord_name)){
coord_name <- raster::crs(raster_obj)@projargs
#coord_name <- raster::crs(raster_obj)@projargs
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@jeanetteclark jeanetteclark Oct 20, 2022

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I'd remove this commented out line entirely

warning(paste("Error in the 'coord_name' argument. The following coordinate string will not allow the EML to validate if used:", raster::crs(raster_obj)@projargs, "\n \nPlease search for the appropriate coordinate string by running View(get_coord_list()). You should use a string from the 'geogCoordSys' column. Commonly used projections are WGS84 and NAD83. The correct strings for these projections are 'GCS_WGS_1984' and 'GCS_North_American_1983', respectively."))
}


if (identical(raster::origin(raster_obj), c(0,0))){
if (raster::origin(raster_obj)[1] > 0 & raster::origin(raster_obj)[2] > 0 ){
# positive x, positive y
raster_orig <- "Upper Right"
} else if (raster::origin(raster_obj)[1] < 0 & raster::origin(raster_obj)[2] > 0 ){
# negative x, positive y
raster_orig <- "Upper Left"
} else if (raster::origin(raster_obj)[1] < 0 & raster::origin(raster_obj)[2] < 0 ){
# negative x, negative y
raster_orig <- "Lower Left"
} else if (raster::origin(raster_obj)[1] > 0 & raster::origin(raster_obj)[2] < 0 ){
# positive x, negative y
raster_orig <- "Lower Right"
} else if (raster::origin(raster_obj)[1] == 0 & raster::origin(raster_obj)[2] < 0 ){
raster_orig <- "Lower Left"
} else if (raster::origin(raster_obj)[1] == 0 & raster::origin(raster_obj)[2] > 0 ){
raster_orig <- "Upper Left"
} else if (raster::origin(raster_obj)[1] > 0 & raster::origin(raster_obj)[2] == 0 ){
raster_orig <- "Upper Right"
} else if (raster::origin(raster_obj)[1] < 0 & raster::origin(raster_obj)[2] == 0 ){
raster_orig <- "Upper Left"
} else if (identical(raster::origin(raster_obj), c(0,0))){
raster_orig <- "Upper Left"
} else if(!identical(raster::origin(raster_obj), c(0,0))){
message("Raster origin not at 0,0")
raster_orig <- "unknown"
}

raster_info <- list(entityName = basename(path),
attributeList = set_attributes(attributes),
attributeList = attributeList,
spatialReference = list(horizCoordSysName = coord_name),
horizontalAccuracy = list(accuracyReport = "unknown"),
verticalAccuracy = list(accuracyReport = "unknown"),
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