求助：nc数据多变量转grd文件出错

lily2012_01

最近在用nc风场数据，发现多变量写入GRD文件报错。不知道是GRD生成有问题，还是给GRD写的ctl文件写的有问题，请各位大拿看看哪里有问题，谢谢！
gs文件如下：
'sdfopen g:/ERA5/input-nc/20200517-21.nc'
'set gxout fwrite'
'set fwrite g:/ERA5/output-wind/out20200517-21.grd'
'set x 1 1440'
'set y 1 721'

tt=1
while (tt <= 144)
'set t 'tt''
'set z 1'
'd u10'
'd v10'
'd fg10'
'd i10fg'

tt=tt+1
endwhile
'disable fwrite'
'c'

给GRD文件写的ctl信息如下：
dset g:/ERA5/output-wind/out20200517-21.grd
title wind 20200517-21
undef -9.99e+33
dtype netcdf
xdef 1440 linear 0 0.25
ydef 721 linear -90 0.25
zdef 1 linear 0 1
tdef 144 linear 00Z17MAY2020 60mn
vars 4
u10=>u10  0  t,y,x  10 metre U wind component
v10=>v10  0  t,y,x  10 metre V wind component
fg10=>fg10  0  t,y,x  10 metre wind gust since previous post-processing
i10fg=>i10fg  0  t,y,x  Instantaneous 10 metre wind gust
endvars

用GRADS打开生成的GRD文件报错如下：

werewolf

为啥要写grd呢

lily2012_01

fortran读取方便

lqouc

问题是什么呢？报错内容是什么？

lily2012_01

lqouc 发表于 2021-7-7 10:05
问题是什么呢？报错内容是什么？

ga-> open g:/ERA5/output-wind/out20200517-21.ctl
Scanning description file:  g:/ERA5/output-wind/out20200517-21.ctl
Error: nc_open failed to open file g:/ERA5/output-wind/out20200517-21.grd
NetCDF: Unknown file format

lily2012_01

lqouc 发表于 2021-7-7 10:05
问题是什么呢？报错内容是什么？

打开GRD文件的ctl报错如下：

lily2012_01

找到原因了

river

dtype netcdf  
很明显，你写了个普通二进制文件，非要在描述文件里告诉GrADS它是NC格式的，所以就打不开

任性小王子

我在数据转换时，出现如下报错信息，怎么解决大神。
Traceback (most recent call last):
  File "grd2nc.py", line 3, in <module>
    open_CtlDataset('E:/Study/Data_assimilation/paper/model2data/DATA_back45/nature/t30.ctl').to_netcdf('output.nc')
  File "/mnt/e/study/Data_assimilation/paper/model2data/DATA_back45/result/xgrads/io.py", line 103, in open_CtlDataset
    ctl = CtlDescriptor(encoding=encoding, file=desfile)
  File "/mnt/e/study/Data_assimilation/paper/model2data/DATA_back45/result/xgrads/core.py", line 107, in __init__
    if os.path.getsize(abspath) / (1024.0*1024.0) > 2:
  File "/home/changmh/anaconda3/lib/python3.8/genericpath.py", line 50, in getsize
    return os.stat(filename).st_size
FileNotFoundError: [Errno 2] No such file or directory: 'E:/Study/Data_assimilation/paper/model2data/DATA_back45/nature/t30.ctl'
(base) changmh@changmh:/mnt/e/study/Data_assimilation/paper/model2data/DATA_back45/result$

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