netcdf

I need to plot some data from this NetCDF file (1.1MB). The file contains a 413x229 grid (94577 points). Every point has a precipitation value which I need to print in the correct LAT-LON. The grid is not necessarily constant, so that we have two additional 413x229 variables (xlat and xlon) containing the lat-lon values for each grid point. Thanks to the hints from these questions... How to plot contours on a map with ggplot2 when data is on an irregular grid? R - Plotting netcdf climate data Plotting netcdf in R with correct grid How to plot latitude/longitude points over netcdf map Plotting

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Really simple problem with the raster package, also using ncdf4 to load in an ECMWF Era-Interim Netcdf file. Simply doing this: a <- nc_open("SSTs.nc") B <- brick(a, varname="sst") Returns this: Error in (function (classes, fdef, mtable) : unable to find an inherited method for function ‘brick’ for signature ‘"ncdf4"’ The file is just SST data over the whole globe, for 1 month (Jan2016). When I convert it into an array (i.e. extract dimensions/variable, and convert time to UTC, shove it into an array) I don't get the same error, but the

I have a netCDF file that I wish to extract a subset from defined by latitude/longitude boundaries (i.e. a lat/long defined box), using the ‘ncdf’ package in R. A summary of my netCDF file is below. It has two dimensions (latitude and longitude) and 1 variable (10U_GDS4_SFC). It is essentially a lat/long grid containing wind values: [1] "file example.nc has 2 dimensions:" [1] "lat_0 Size: 1280" [1] "lon_1 Size: 2560" [1] "------------------------" [1] "file example.nc has 1 variables:" [1] "float 10U_GDS4_SFC[lon_1,lat_0] Longname:10 metre U wind component Missval:1e+30" The latitude variable

I work with satellite data organized on an irregular two-dimensional grid whose dimensions are scanline (along track dimension) and ground pixel (across track dimension). Latitude and longitude information for each centre pixel are stored in auxiliary coordinate variables, as well as the four corners coordinate pairs (latitude and longitude coordinates are given on the WGS84 reference ellipsoid). The data is stored in netCDF4 files. What I am trying to do is efficiently plotting these files (and possibly a combination of files—next step!) on a projected map. My approach so far, inspired by

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: This is my first time using netCDF and I'm trying to wrap my head around working with it. I have multiple version 3 netcdf files (NOAA NARR air.2m daily averages for an entire year). Each file spans a year between 1979 - 2012. They are 349 x 277 grids with approximately a 32km resolution. Data was downloaded from here . The dimension is time (hours since 1/1/1800) and my variable of interest is air. I need to calculate accumulated days with a temperature Day 1 = +4 degrees, accumulated days = 0 Day 2 = -1 degrees, accumulated days = 1 Day 3

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: This is my first time using netCDF and I'm trying to wrap my head around working with it. I have multiple version 3 netcdf files (NOAA NARR air.2m daily averages for an entire year). Each file spans a year between 1979 - 2012. They are 349 x 277 grids with approximately a 32km resolution. Data was downloaded from here . The dimension is time (hours since 1/1/1800) and my variable of interest is air. I need to calculate accumulated days with a temperature Day 1 = +4 degrees, accumulated days = 0 Day 2 = -1 degrees, accumulated days = 1 Day 3

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I've got an R grid file containing monthly temperature data for the year 1981 which I read in and tried to write to NetCDF using the following code: library(raster) library(ncdf4) library(RNetCDF) test <- raster('.../TavgM_1981.gri', package = "raster") rstack = stack(test) writeRaster(rstack, "rstack.nc", overwrite=TRUE, format="CDF", varname="Temperature", varunit="degC", longname="Temperature -- raster stack to netCDF", xname="X", yname="Y",zname="nbands", zunit="numeric") This writes the NetCDF file , but it only seems to have one month