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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,2 +1,3 @@ | ||
| .Rproj.user | ||
| .Rhistory | ||
| gdalwmscache |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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@@ -37,7 +37,8 @@ Imports: | |
| reproj (>= 0.4.2), | ||
| utils, | ||
| crsmeta, | ||
| terra | ||
| terra, | ||
| vapour | ||
| Suggests: | ||
| covr, | ||
| spelling, | ||
|
|
||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,180 @@ | ||
| loc_extent <- function(x, buffer, dimension = NULL) { | ||
| if (missing(x) && missing(buffer)) { | ||
| ## get the whole world at zoom provided, as a neat default | ||
| x <- cbind(0, 0) | ||
| buffer <- c(20037508, 20037508) | ||
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| } | ||
| bbox_pair <- spatial_bbox(x, buffer) | ||
| ext <- as.vector(bbox_pair$extent) | ||
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| ## widest | ||
| dx_dy <- diff(ext)[c(1, 3)] | ||
| if (is.null(dimension)) { | ||
| dimension <- rep(min(dev.size("px")), 2L) | ||
| was_one <- TRUE | ||
| } else { | ||
| was_one <- length(dimension) == 1 | ||
| } | ||
| # print(dimension) | ||
| dimension <- rep(dimension, length.out = 2L) | ||
| if (was_one) dimension[which.min(dx_dy)] <- 0L | ||
| c(ext, dimension) | ||
| } | ||
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| format_out <- function (x) | ||
| { | ||
| dimension <- x$dimension | ||
| projection <- x$projection | ||
| x <- x$extent | ||
| if (inherits(x, "SpatRaster")) { | ||
| if (!requireNamespace("terra")) | ||
| stop("terra package required but not available, please install it") | ||
| x <- terra_out(x) | ||
| if (is.na(x$projection) && x$lonlat) | ||
| x$projection <- "OGC:CRS84" | ||
| x$type <- "terra" | ||
| } | ||
| if (inherits(x, "BasicRaster")) { | ||
| if (!requireNamespace("raster")) | ||
| stop("raster package required but not available, please install it") | ||
| x <- raster_out(x) | ||
| if (is.na(x$projection) && x$lonlat) | ||
| x$projection <- "OGC:CRS84" | ||
| x$type <- "raster" | ||
| } | ||
| if (inherits(x, "numeric")) { | ||
| if (is.null(projection)) | ||
| projection <- "OGC:CRS84" | ||
| if (is.null(dimension)) | ||
| dimension <- as.integer(256 * sort(c(1, diff(x[1:2])/diff(x[3:4])), | ||
| decreasing = FALSE)) | ||
| lonlat <- grepl("lonlat", projection) || grepl("4326", | ||
| projection) || grepl("4269", projection) || grepl("OGC:CRS84", | ||
| projection) || grepl("GEOGCS", projection) | ||
| x <- list(extent = x, dimension = dimension, projection = projection, | ||
| lonlat = lonlat, type = "matrix") | ||
| } | ||
| x$lonlat <- vapour::vapour_crs_is_lonlat(x$projection) | ||
| x | ||
| } | ||
|
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||
| terra_out <- function (x) | ||
| { | ||
| if (isS4(x) && inherits(x, "SpatRaster")) { | ||
| x <- try(list(extent = c(terra::xmin(x), terra::xmax(x), | ||
| terra::ymin(x), terra::ymax(x)), dimension = dim(x)[2:1], | ||
| projection = terra::crs(x), lonlat = terra::is.lonlat(x), | ||
| terra = TRUE), silent = TRUE) | ||
| if (inherits(x, "try-error")) | ||
| stop("cannot use terra grid") | ||
| } | ||
| x | ||
| } | ||
| gdal_mapbox <- function (extent = c(-180, 180, -90, 90), ..., dimension = NULL, | ||
| projection = "OGC:CRS84", resample = "near", source = NULL) | ||
| { | ||
| xraster <- extent | ||
| x <- format_out(list(extent = extent, dimension = dimension, | ||
| projection = projection)) | ||
| src1 <- "<GDAL_WMS><Service name=\"TMS\"><ServerUrl>https://api.mapbox.com/v4/mapbox.satellite/${z}/${x}/${y}.jpg?access_token=%s</ServerUrl></Service><DataWindow><UpperLeftX>-20037508.34</UpperLeftX><UpperLeftY>20037508.34</UpperLeftY><LowerRightX>20037508.34</LowerRightX><LowerRightY>-20037508.34</LowerRightY><TileLevel>22</TileLevel><TileCountX>1</TileCountX><TileCountY>1</TileCountY><YOrigin>top</YOrigin></DataWindow><Projection>EPSG:3857</Projection><BlockSizeX>256</BlockSizeX><BlockSizeY>256</BlockSizeY><BandsCount>3</BandsCount>" | ||
| src2 <- sprintf("<UserAgent>%s</UserAgent><Cache /></GDAL_WMS>", | ||
| getOption("HTTPUserAgent")) | ||
| src <- paste0(src1, src2) | ||
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|
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| if (is.null(source)) { | ||
| rso <- sprintf(src, get_api_key()) | ||
| } | ||
| else { | ||
| rso <- source | ||
| } | ||
| if (is.na(x$projection)) { | ||
| message("no projection specified, calling warper without a target projection: results not guaranteed") | ||
| x$projection <- "" | ||
| } | ||
| info <- vapour::vapour_raster_info(rso[1]) | ||
| bands <- 1:3 | ||
| if (info$bands < 3) { | ||
| bands <- 1L | ||
| } | ||
| vals <- vapour::gdal_raster_image(rso, target_ext = x$extent, | ||
| target_dim = x$dimension, target_crs = x$projection, | ||
| resample = resample, ..., bands = bands) | ||
|
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||
| x$type <- "terra" | ||
| xraster <- terra::rast(terra::ext(attr(vals, "extent")), | ||
| ncol = attr(vals, "dimension")[1L], | ||
| nrow = attr(vals, "dimension")[2L], crs = "EPSG:3857", vals = vals[[1]]) | ||
| xraster | ||
| } | ||
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| gdal_aws <- function (extent = c(-180, 180, -90, 90), ..., dimension = NULL, | ||
| projection = "OGC:CRS84", resample = "near", source = NULL) | ||
| { | ||
| xraster <- extent | ||
| x <- format_out(list(extent = extent, dimension = dimension, | ||
| projection = projection)) | ||
|
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| src <- sprintf("<GDAL_WMS>\n <Service name=\"TMS\">\n <ServerUrl>https://s3.amazonaws.com/elevation-tiles-prod/geotiff/${z}/${x}/${y}.tif</ServerUrl>\n </Service>\n <DataWindow>\n <UpperLeftX>-20037508.340000</UpperLeftX>\n <UpperLeftY>20037508.340000</UpperLeftY>\n <LowerRightX>20037508.340000</LowerRightX>\n <LowerRightY>-20037508.340000</LowerRightY>\n <TileLevel>15</TileLevel>\n <TileCountX>1</TileCountX>\n <TileCountY>1</TileCountY>\n <YOrigin>top</YOrigin>\n </DataWindow>\n <Projection>EPSG:3857</Projection>\n <BlockSizeX>512</BlockSizeX>\n <BlockSizeY>512</BlockSizeY>\n <BandsCount>1</BandsCount>\n <UserAgent>%s</UserAgent>\n</GDAL_WMS>", | ||
| getOption("HTTPUserAgent")) | ||
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| if (is.null(source)) { | ||
| rso <- src | ||
| } else { | ||
| rso <- source | ||
| } | ||
| if (is.na(x$projection)) { | ||
| message("no projection specified, calling warper without a target projection: results not guaranteed") | ||
| x$projection <- "" | ||
| } | ||
| vals <- vapour::gdal_raster_data(rso, target_ext = x$extent, | ||
| target_dim = x$dimension, target_crs = x$projection, | ||
| resample = resample, ..., bands = 1L) | ||
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| xraster <- terra::rast(terra::ext(attr(vals, "extent")), | ||
| ncol = attr(vals, "dimension")[1L], | ||
| nrow = attr(vals, "dimension")[2L], crs = "EPSG:3857", vals = vals[[1]]) | ||
| xraster | ||
| } | ||
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| gdal_terrainrgb <- function (extent = c(-180, 180, -90, 90), ..., dimension = NULL, | ||
| projection = "OGC:CRS84", resample = "near", source = NULL) | ||
| { | ||
| xraster <- extent | ||
| x <- format_out(list(extent = extent, dimension = dimension, | ||
| projection = projection)) | ||
|
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||
| src1 <- "<GDAL_WMS><Service name=\"TMS\"><ServerUrl>https://api.mapbox.com/v4/mapbox.terrain-rgb/${z}/${x}/${y}.png?access_token=%s</ServerUrl></Service><DataWindow><UpperLeftX>-20037508.34</UpperLeftX><UpperLeftY>20037508.34</UpperLeftY><LowerRightX>20037508.34</LowerRightX><LowerRightY>-20037508.34</LowerRightY><TileLevel>22</TileLevel><TileCountX>1</TileCountX><TileCountY>1</TileCountY><YOrigin>top</YOrigin></DataWindow><Projection>EPSG:3857</Projection><BlockSizeX>256</BlockSizeX><BlockSizeY>256</BlockSizeY><BandsCount>3</BandsCount>" | ||
| src2 <- sprintf("<UserAgent>%s</UserAgent><Cache /><ZeroBlockHttpCodes>404</ZeroBlockHttpCodes></GDAL_WMS>", | ||
| getOption("HTTPUserAgent")) | ||
|
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| src <- paste0(src1, src2) | ||
| if (is.null(source)) { | ||
| rso <- sprintf(src, get_api_key()) | ||
| } else { | ||
| rso <- source | ||
| } | ||
| if (is.na(x$projection)) { | ||
| message("no projection specified, calling warper without a target projection: results not guaranteed") | ||
| x$projection <- "" | ||
| } | ||
| vals <- vapour::gdal_raster_data(rso, target_ext = x$extent, | ||
| target_dim = x$dimension, target_crs = x$projection, | ||
| resample = resample, ..., bands = 1:3) | ||
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| d <- -10000 + ((vals[[1]] * 256 * 256 + vals[[2]] * 256 + vals[[3]]) * 0.1) | ||
|
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| xraster <- terra::rast(terra::ext(attr(vals, "extent")), | ||
| ncol = attr(vals, "dimension")[1L], | ||
| nrow = attr(vals, "dimension")[2L], crs = "EPSG:3857", vals = d) | ||
| xraster | ||
| } |
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