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

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


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.


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.

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
def axis/t=0:24/npoints=200/units=hours hours_axis If you only want the first 25 steps of uvel then you
        replace "uvel" by
  "uvel[l=k=1:25]"  in your definition of
Cheers, Russ On 07/06/14 05:11, 'Sara Sari' via _OAR PMEL
  Ferret Users wrote:
          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,

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