Re: [ferret_users] Error in time series of velocity profile

[Russ Fiedler <russell.fiedler@xxxxxxxx>]

Hi Sara,

First, please try to reply to the user group rather than back to people 
personally so there's a record in the ferret mail archives of what's 
going on and somebody else may also be able to help.

Ok, I'll assume that you have 200 points in your day of interest and that

PLOT uvel

or

PLOT/k=1:200 uvel

works ok apart from having an axis that runs from 1 to 200

If the values are all zero (and you don't expect them to be zero) then 
there is a problem with
the dataset and you will need to look into that first.



def axis/t=0:24/npoints=200/units=hours hours_axis


let uvel_on_time = RESHAPE(uvel,t[gt=hours_axis])
plot uvel_on_time

Should plot 200 values on an axis spanning 1 day.


If you only want the first 25 values then your original post should have 
plotted things correctly.

Cheers,
Russ


On 30/06/14 05:32, Sara Sari wrote:
> Dear Russ,
> Thank you very much for your help. could you please complete the command? I mean what to type after the :
> def axis/t=0:24/npoints=200/units=hours hours_axis
>   ???????
> to plot uvel on time?
> I'm almost newbie.
> regards,
> Sara
>
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> --------------------------------------------
> On Mon, 6/9/14, Russ Fiedler <russell.fiedler@xxxxxxxx> wrote:
>
>   Subject: Re: [ferret_users] Error in time series of velocity profile
>   To: ferret_users@xxxxxxxx
>   Date: Monday, June 9, 2014, 4:21 PM
>   
>   
>     
>   
>       
>     
>     
>       
>   
>         Hi Sara,
>   
>         
>   
>         Your reshaping command doesn't make any sense. The
>   new hour_axis
>         is only 25 steps long but  you are trying to
>   reshape a variable
>         (uvel) which is 200 units long. I guess it just takes
>   the first 25
>         steps of uvel but who knows.
>   
>         
>   
>         What are the first 25 values of uvel?
>   
>         
>   
>         If you really want a time axis from 0 to 24 with 200
>   points then
>         try
>   
>         
>   
>         def axis/t=0:24/npoints=200/units=hours hours_axis
>   
>         
>   
>         If you only want the first 25 steps of uvel then you
>   should
>         replace "uvel" by
>   "uvel[l=k=1:25]"  in your definition of
>         uvel_on_time.
>   
>         
>   
>         Cheers,
>   
>         Russ
>   
>         
>   
>         On 07/06/14 05:11, 'Sara Sari' via _OAR PMEL
>   Ferret Users wrote:
>   
>       
>       
>         
>         
>           Hi,
>           Could any one please let me know whether or not
>   the command
>             whichI used for plotting time series of velocity
>   profile is
>             correct? I don't know why it just gives a
>   solid horizontal
>             line! I want to be sure that the problem is not
>   with the
>             ferret command.
>           Thank you,
>           Sara
>         
>       
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>