difference between d u;v and d u;v;w

[L. Qi]

When using "d u;v;w", the wind vector colors will change  with the
magnitude of w; similarly, you can try "d u;v;mag(u,v)", in which the
wind vector colors will change with the magnitude of wind velocity.
There were discussions on this topic recently in this mail list
(Subject: colored vector).

For your second question, probably you can try to plot velocity
contours at the same time, that is:
 d u;v
 d mag(u, v)

Good luck.

Regards,
Lixin


On Fri, Nov 20, 2009 at 1:32 AM, Yan Libin <zjuyanlibin at 163.com> wrote:
> Hi, everyone!
>
> Can anyone tell me the difference between d u;v and d u;v;w?
>
> BTW, When I plotted the global U-V wind field, the U-V values of some places
> were so large that
> the others with small U-V values were invisible. Is there any method which
> can overcome this problem?
>
> Any suggestion is welcome!
>
> Thanks in advance!
>
> Best regards,
>
> Libin Yan
>
>
> 2009-11-19
> ________________________________
> Yan Libin