我想将显示values
of 的标签添加latitudinal zonal averages
到levelplot's
gray margin
。在以下示例中,min
和的max
值latitudinal means
分别为286
和751
。adding an axis
对此信息有何建议margin
?
library(raster)
library(rasterVis)
r <- raster(system.file("external/test.grd", package="raster"))
levelplot(r, at=seq(100, 1850, by = 250))
# calculating the latitudinal means
rows <- init(r, v='y')
yAve <- zonal(r, rows, fun='mean',na.rm=TRUE)
summary(yAve)