Two maps with different extents
I am using R to process two maps (raster package). I have two maps with both WGS84 coordinates see figure.
But one layer is from -180 to 180 in longitude (the map on surface) another one is from 0 to 360 (the map on the bottom).
I need to adjust the bottom layer to -180 to 180 so that they can match. How can I do that?
I think I need to find all grid greater than 180 and then minus 360. But I cannot find the longitude vector and cannot modify it from the Raster data.
Description of the map is:
class : RasterLayer
dimensions : 94, 192, 18048 (nrow, ncol, ncell)
resolution : 1.865234, 1.883872 (x, y)
extent : 0, 358.125, -88.542, 88.542 (xmin, xmax, ymin, ymax)
coord. ref. : +proj=longlat +datum=WGS84 +ellps=WGS84 +towgs84=0,0,0
data source : in memory
names : TMAX_2015_01_01
values : 220.9, 324.3 (min, max)
spTransform(ws_soil,CRS=CRS("+proj=longlat +ellps=WGS84 +pm=+360 +datum=WGS84 +no_defs"))
You need to play with "+pm=+360" or "+pm=-360"