Re: [ferret_users] Attribute on the 3rd coordinates to prevent a transpose of a plot ?

[Karl Smith - NOAA Affiliate <karl.smith@xxxxxxxx>]

Hi Olivier,

Because the iteration coordinate is assigned to what Ferret usually uses as the "level" or "depth" axis, it is assuming the most appropriate plot by default is one with this "depth" on the vertical axis.  Since iteration sounds like it would be better on the "ensemble" axis, so there are two solutions that come to my mind:

-- add a depth value to the variable in the NetCDF file (so have VAR(iteration,time,nz,ny,nx) where nz a some single coordinate); or

-- open the NetCDF file in Ferret with the /ORDER=XYET qualifier which will associate the iteration coordinates with the ensemble axis and will not have a depth axis.

(I am surprised by the L=10 since what you show has only six time steps.)

Karl

On Wed, Sep 25, 2019 at 7:39 AM Olivier Marti <olivier.marti@xxxxxxxxxxxx> wrote:

Hi,

I have a file :

netcdf TEMPO_1D_cpl_atm {

dimensions:

time = 6 ;

iteration = 6 ;

ny = 96 ;

nx = 96 ;

variables:

int time(time) ;

int iteration(iteration) ;

iteration:unit = "iteration" ;

double VAR(time, iteration, ny, nx) ;

When I plot : PLOT  VAR[I=32,J=32,L=10], I got a plot with the dimension "iteration" on the vertical axis, and the value of VAR on the "horizontal" one. I have to run PLOT/TRANPOSE ... to get the plot I want.

Which attribute can I add to my file to get simply and automatically the iteration dimension on the X axis ?

Thanks,

Olivier

— 

Olivier Marti  - LSCE Bât 714 p. 1049

Tel : +33 1 69 08 77 27

mailto:olivier.marti@xxxxxxxxxxxx

--

Karl M. Smith, Ph.D.
JISAO Univ. Wash. and PMEL NOAA
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