[英]Create NetCDF R
我正在嘗試使用尺寸為3d矩陣m3d的NetCDF文件編寫文件
73 (LON) x 36 (LAT) x 12 (TIME)
由暗中的12個矩陣創建
73 (LON) x 36 (LAT)
這是我的代碼
#Setting dimensions
space <- 5
Longvector = seq(-180, 180, by = space)
Latvector = seq(-90, 90, by = space)
dimMATR <- 73
dimMATC <- 36
dimX <- dim.def.ncdf("Long", "degrees", Longvector)
dimY <- dim.def.ncdf("LAT", "degrees", Latvector)
dimT <- dim.def.ncdf("Time", "days", 1:12, unlim = FALSE)
#Create 3d Matrix
m3d <- array(0, dim = c(dimMATR,dimMATC,12))
for (i in 1:12){
m <- as.matrix(do.call(rbind,myfilesContent[i]))
m3d[,,i]<-t(m)
remove(m)
}
#Create NetCDF
mv <- -9999 # missing value to use
L <- prod(dimMATR,dimMATC,12)
var3d <- var.def.ncdf( "monthlyav_sst", "units", list(dimX,dimY,dimT), mv,prec="double")
nc <- create.ncdf( "monthlyav_sst.nc", var3d)
put.var.ncdf(nc, var3d, m3d, start = c(1, 1, 1), count = c(1, 1, L))
close.ncdf(nc)
無論如何,我得到此錯誤作為輸出
Error in R_nc_put_vara_double: NetCDF: Start+count exceeds dimension bound
Error in put.var.ncdf(nc, var3d, m3d, start = c(1, 1, 1), count = c(1, :
C function R_nc_put_var_double returned error
恕我直言,您的問題是錯誤的Longvector
和Longvector
的錯誤count
參數,eq這對我put.var.ncdf
(請注意:我在您的for
循環中更改了矩陣生成):
library("ncdf")
# Setting dimensions
space <- 5
Longvector = seq(-180, 180, by = space)
Latvector = seq(-90, 90, by = space)
dimMATR <- length(Longvector)
dimMATC <- length(Latvector)
dimX <- dim.def.ncdf("Long", "degrees", Longvector)
dimY <- dim.def.ncdf("LAT", "degrees", Latvector)
dimT <- dim.def.ncdf("Time", "days", 1:12, unlim = FALSE)
# Create 3d Matrix
m3d <- array(0, dim = c(dimMATR,dimMATC,12))
for (i in 1:12){
m <- matrix(sample(dimMATR*dimMATC), dimMATR, dimMATC)
m3d[,,i]<-t(m)
remove(m)
}
# Create NetCDF
mv <- -9999 # missing value to use
var3d <- var.def.ncdf( "monthlyav_sst", "units", list(dimX,dimY,dimT), mv,prec="double")
nc <- create.ncdf( "monthlyav_sst.nc", var3d)
put.var.ncdf(nc, var3d, m3d, start=c(1, 1, 1), count=dim(m3d))
close(nc)
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