drawing plot with one time per day

[Henrique Barbosa]

Dear Luis,

I think you want to plot the average, because ploting 365 fields on top
of each other won't work. Here's how you can do it:

set t 1
umean=ave(u,t=1,t=last,2)
vmean=ave(u,t=1,t=last,2)
d skip(umean,vmean,2)

The last parameter in ave() function is a step. Therefore, the last 2
tells grads to consider only t=1, t=3, t=5,.... If your time step
is 12z and the first time is 0z, then the average will be done
only for the 0z fields. Starting at t=2 does the job for the 12z fields.

bye,
Henrique

On 9/21/05, Luis Fernando Montana Roa <lfmontanar at unal.edu.co> wrote:
>
> Dear Grads Users,
>
> I need to draw wind components u, v daily over one year from reanalysis.
> Each file have two times per day (00Z and 12Z). ¿How can I draw only 12Z
> data (or 00Z) in one only plot and drawing all days over the year?
> Thanks in advance,
>
> Luis Fernando Montana Roa
> Posgrado de Meteorologia
> Universidad Nacional de Colombia
> Bogota - Colombia - South America
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://gradsusr.org/pipermail/gradsusr/attachments/20050921/831f093a/attachment.html