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| Original file line number | Diff line number | Diff line change |
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| #' @title Intersection of multiple grids | ||
| #' @description Takes multiple input grids and crops the overlapping part | ||
| #' @param ... Input grids | ||
| #' @param type Character. Options are "temporal" (default) or "spatial". | ||
| #' @param which.return Integer of the index to specify which grids in "..." are to be returned. | ||
| #' @return The grids indicated in \code{which.return}, encompassing the overlapping time period. | ||
| #' @author M Iturbide | ||
| #' @family subsetting | ||
| #' @seealso \code{\link{subsetGrid}} | ||
| #' @export | ||
| #' @example { | ||
| # data("EOBS_Iberia_tas") | ||
| # a <- subsetGrid(EOBS_Iberia_tas, lonLim = c(-8,-1), latLim = c(37, 40)) | ||
| # b <- subsetGrid(EOBS_Iberia_tas, lonLim = c(-4,3), latLim = c(39, 43)) | ||
| # z <- intersectGrid(a, b, type = "spatial", which.return = 1) | ||
| # } | ||
|
|
||
| intersectGrid <- function(..., type = c("temporal", "spatial"), which.return = 1) { | ||
| type <- match.arg(type, choices = c("temporal", "spatial")) | ||
| if (type == "temporal") { | ||
| outgrid <- intersectGrid.time(..., which.return = which.return) | ||
| } else if (type == "spatial") { | ||
| outgrid <- intersectGrid.spatial(..., which.return = which.return) | ||
| } else { | ||
| stop("Invalid option for argument 'type'.") | ||
| } | ||
| return(outgrid) | ||
| } | ||
|
|
||
| #' @title Temporal intersection of multiple grids | ||
| #' @description Takes multiple input grids and crops the overlapping part along time dimension | ||
| #' @param ... Input grids | ||
| #' @param which.return Integer of the index to specify which grids in "..." are to be returned. | ||
| #' @return The grids indicated in \code{which.return}, encompassing the overlapping time period. | ||
| #' @importFrom magrittr %<>% %>% | ||
| #' @author M Iturbide | ||
| #' @family subsetting | ||
| #' @seealso \code{\link{checkDim}}, \code{\link{checkSeason}}, \code{\link{getYearsAsINDEX}}, \code{\link{getSeason}}, for other time dimension helpers | ||
| #' @export | ||
|
|
||
| intersectGrid.time <- function(..., which.return = 1) { | ||
| grid.list <- list(...) | ||
| if (length(grid.list) < length(which.return)) stop("Wrong value for argument which.return") | ||
| ref.dates <- lapply(1:length(grid.list), function(x){ | ||
| getRefDates(grid.list[[x]]) %>% as.Date(tz = "GMT", format = "%Y-%m-%d") | ||
| }) | ||
| auxDates <- ref.dates[[1]] | ||
| for (i in 2:length(grid.list)) { | ||
| auxDates <- intersect(auxDates, ref.dates[[i]]) %>% as.Date(origin = "1970-01-01", tz = "GMT", format = "%Y-%m-%d") | ||
| } | ||
| ind <- lapply(ref.dates, function(x) which(is.element(x, auxDates))) | ||
| out <- lapply(1:length(grid.list), function(x) { | ||
| out.l <- subsetDimension(grid.list[[x]], dimension = "time", indices = ind[[x]]) | ||
| seas <- getSeason(out.l) | ||
| attr(out.l$Variable, "time_subset") <- "intersectGrid.time" | ||
| attr(out.l$Dates, "season") <- seas | ||
| out.l | ||
| }) | ||
| out <- out[which.return] | ||
| if (length(out) == 1) out <- out[[1]] | ||
| return(out) | ||
| } | ||
|
|
||
|
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||
|
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| #' @title Temporal intersection of multiple grids | ||
| #' @description Takes multiple input grids and crops the overlapping part along time longitude and latitude dimensions | ||
| #' @param ... Input grids | ||
| #' @param which.return Integer of the index to specify which grids in "..." are to be returned. | ||
| #' @return The grids indicated in \code{which.return}, encompassing the overlapping time period. | ||
| #' @importFrom magrittr %<>% %>% | ||
| #' @author M Iturbide | ||
| #' @family subsetting | ||
| #' @seealso \code{\link{checkDim}}, \code{\link{checkSeason}}, \code{\link{getYearsAsINDEX}}, \code{\link{getSeason}}, for other time dimension helpers | ||
| #' @export | ||
|
|
||
| intersectGrid.spatial <- function(..., which.return = 1) { | ||
| grid.list <- list(...) | ||
| if (length(grid.list) < length(which.return)) stop("Wrong value for argument which.return") | ||
| # longitudes | ||
| ref.lons <- lapply(1:length(grid.list), function(x){ | ||
| getCoordinates(grid.list[[x]])$x | ||
| }) | ||
| auxLons <- ref.lons[[1]] | ||
| for (i in 2:length(grid.list)) { | ||
| auxLons <- intersect(auxLons, ref.lons[[i]]) | ||
| } | ||
| if (length(auxLons) == 0) { | ||
| message("Longitude intersection skipped. There are not intersecting longitudes") | ||
| } else { | ||
| ind <- lapply(ref.lons, function(x) which(is.element(x, auxLons))) | ||
| out <- lapply(1:length(grid.list), function(x) { | ||
| subsetDimension(grid.list[[x]], dimension = "lon", indices = ind[[x]]) | ||
| }) | ||
| grid.list <- out | ||
| } | ||
| #latitudes | ||
| ref.lats <- lapply(1:length(grid.list), function(x){ | ||
| getCoordinates(grid.list[[x]])$y | ||
| }) | ||
| auxLats <- ref.lats[[1]] | ||
| for (i in 2:length(grid.list)) { | ||
| auxLats <- intersect(auxLats, ref.lats[[i]]) | ||
| } | ||
| if (length(auxLats) == 0) { | ||
| message("Latitude intersection skipped. There are not intersecting latitudes") | ||
| out <- grid.list | ||
| } else { | ||
| ind <- lapply(ref.lats, function(x) which(is.element(x, auxLats))) | ||
| out <- lapply(1:length(grid.list), function(x) { | ||
| subsetDimension(grid.list[[x]], dimension = "lat", indices = ind[[x]]) | ||
| }) | ||
| } | ||
| out <- out[which.return] | ||
| if (length(out) == 1) out <- out[[1]] | ||
| return(out) | ||
| } |
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