Re: [ferret_users] Ferret 5.70: vertical_section.jnl

[Ansley Manke <ansley.b.manke@xxxxxxxx>]

Hi Jimmy,
You can use the ideas of the script vertical_section.jnl to define the 
variables for each of the two sampled vector components and call the 
VECTOR command. It should go something like this:


 yes? ! This shows the commands in the script
 yes? go/help vertical_section.jnl


 !  define the lo and hi x and y ranges of the line in variables xlo, 
xhi, ylo, yhi and the number
 ! of points along the line (or just use numerical values in the LET 
commands below)

 yes? let npts = 
 yes? let xhi =
 ...

 yes? let x_vsect = `(xhi - xlo)`*`(npts-1)` * (i-1) + `xlo`
 yes? let y_vsect = `(yhi - ylo)`*`(npts-1)` * (i-1) + `ylo`

 ! If the vector components you want to sample are called uvar and 
vvar, then

 yes? let u_sample =  samplexy(uvar, x_vsect[i=1:`npts`], 
y_vsect[i=1:`npts`])
  yes? let v_sample =  samplexy(vvar, x_vsect[i=1:`npts`], 
y_vsect[i=1:`npts`])

 yes? vector/aspect u_sample, v_sample

(The /ASPECT qualifier is a good idea for most vector plots, and 
particularly for vertical slices of a vector field.)



yes? let xcomponent = samplexy (

jimmyc@xxxxxxxxxxx wrote:
> All-
> I am trying to plot a vertical section using the vector/over command
> The script does not accomadate the vector command, apparently because 
> it can only perform the samplexy on one variable. So, even if I run 
> sample xy twice, I have two variables but samplexy only plots one 
> variable.
>
> Is there another way to plot a vector field in vertical_section?
> Any ideas are welcome...
> Thanks for reading

--

~>   ~>   ~>   ~>   ~>   ~>   ~>   ~>   ~>   ~>   ~> 

Ansley Manke, NOAA/PMEL   ansley.b.manke@xxxxxxxx
7600 Sand Point Way NE, Seattle WA
Phone 206-526-6246,  FAX 206-526-6744