CDO

Good morning, I need to generate a netcdf file without records. Example

I have the following table

11 12 13 14 ...
21 22 23 24 ...
31 32 33 34 ...
....

with the command

#!/bin/bash

xsize=20 ;
ysize=10 ;

printf -v gridfile "%dx%d" $xsize $ysize ;

cat << EOF > $gridfile
  gridtype  = lonlat
  xname     = lon
  xlongname = longilude
  xunits    = degrees_east
  yname     = lat
  ylongname = latilude
  yunits    = degrees_north
  xsize     = $xsize
  xfirst    = -5.00
  xinc      =  0.25
  ysize     = $ysize
  yfirst    =  5.00
  yinc      = -0.25
EOF

for ((iy=0;iy<ysize;iy++)) ; do
  for ((ix=0;ix<xsize;ix++)) ; do
    printf "%02d%02d " $iy $ix ;
  done
done > imap.data ;

cdo -f nc -setname,var -input,$gridfile map.nc < imap.data ;

I generate the relevant netcdf file. When I view the result I have:

File format : NetCDF2
    -1 : Institut Source   T Steptype Levels Num    Points Num Dtype : Parameter ID
     1 : unknown  unknown  v instant       1   1       200   1  F32  : -1
   Grid coordinates :
     1 : lonlat                   : points=200 (20x10)
                              lon : -5 to -0.25 by 0.25 degrees_east
                              lat : 5 to 2.75 by -0.25 degrees_north
   Vertical coordinates :
     1 : surface                  : levels=1
   Time coordinate :
                            time : 1 step
     RefTime =  0001-01-01 00:00:00  Units = hours  Calendar = proleptic_gregorian
  YYYY-MM-DD hh:mm:ss  YYYY-MM-DD hh:mm:ss  YYYY-MM-DD hh:mm:ss  YYYY-MM-DD hh:mm:ss
 -0001-11-30 00:00:00
cdo    sinfo: Processed 1 variable over 1 timestep [0.00s 51MB]_

It generated a timestep for me.

Is there a way to make it generate a netcdf with a two-dimensional variable without timestep?