我是使用 NetCDF 文件的新手，我无法在其他地方找到我的问题的答案。
2015 年的每日降水数据（来自 Gridmet）：https ://www.northwestknowledge.net/metdata/data/pr_2015.nc
我的问题：地图在 x 轴上显示为纬度，在 y 轴上显示为长。如何翻转这些轴？此外，纬度值似乎也被反转了。（见下面的链接地图）
library(raster)
library(ncdf4)
nc15 <- nc_open("C:\\Users\\vsteen\\Desktop\\BorealToad\\Climate\\pr_2015.nc")
b <- brick("C:\\Users\\vsteen\\Desktop\\BorealToad\\Climate\\pr_2015.nc",varname="precipitation_amount")
plot(b[[3]])
print(nc15)
1 variables (excluding dimension variables):
float precipitation_amount[lat,lon,day]
units: mm
description: Daily Accumulated Precipitation
_FillValue: -32767
esri_pe_string: GEOGCS[\"GCS_WGS_1984\",DATUM[\"D_WGS_1984\",SPHEROID[\"WGS_1984\",6378137.0,298.257223563]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]]
coordinates: lon lat
cell_methods: time: sum(interval: 24 hours)
missing_value: -32767
3 dimensions:
lon Size:1386
units: degrees_east
description: longitude
lat Size:585
units: degrees_north
description: latitude
day Size:365
units: days since 1900-01-01 00:00:00
calendar: gregorian
description: days since 1900-01-01
9 global attributes: …