[gradsusr] the different between averaging dan time series

[Jeff Duda]

Be careful how you set your dimension environment.  For the first exercise,
it appears your dimension environment is varying in time, fixed in the
y-direction, but varying slightly in the x-direction.  The resulting plot
you'll get is then a horizontal cross section of the 1-hr averaged
reflectivity at each point.  It will display the same variables 15 times
since your time dimension is varying.  You could simplify that and still
get the same response by keeping your time dimension fixed (the specific
value for t doesn't matter since you're specifying the time indices of the
average).

For the second exercise, you need to set your x-dimension to fixed in order
to get a time series.  Otherwise you'll again get a horizontal cross
section as in the first exercise.  Otherwise, the code is fine.

Jeff Duda

On Wed, Aug 8, 2012 at 12:15 AM, wendi harjupa <wendiharjupa at gmail.com>wrote:

> Dear Sir/Madam
>
> I need your help
>
> I have ctl file as below :
>
> DSET /misc/home/wendi/data1/radar/kototabang/XDR/data/%y4%m2%d2/%d2%h2.dat
> TITLE  RADAR
> OPTIONS  TEMPLATE LITTLE_ENDIAN
> UNDEF  -1000
> XDEF    321 LINEAR    99.688120996    0.004492369
> YDEF    321 LINEAR    -1.083708891    0.004522556
> ZDEF    39  LINEAR   1.0 0.5
> TDEF    15 LINEAR 14:00Z10apr2004  4mn
> VARS    2
> ref 39  99  Reflectivity(dBZ)
> vel 39  99  Doppler Velocity(m/s)
> ENDVARS
>
> If I want to make average for one hour, is it ok if my gs file as below?
>
> 'set lon 100 100.8'
> 'set lat -0.45'
> 'set t 1 15'
> 'set t 1'
> 'd ave(ref, t=1, t=15)'
>
> Then I want to display time series of data (not averaging), is it ok if my
> gs file as below?
>
> 'set lon 100 100.8'
> 'set lat -0.45'
> 'set t 1 15'
> 'set t 15'
> 'd ref'
>
> Please give me any comment, I am very confuse about it,
>
> Thank you
>
> best regards,
> wendi
>
>
>
>
>
>
>
> --
> -------------
> Wendi Harjupa. ST
> Shimane University Graduate School of Engineering Sciences
> Department of Electronic Control Systems
> Remote Sensing Laboratory
> s119447
> Cellphone : +81-080-4268-6676
> email : wendi at rslab.riko.shimane-u.ac.jp
>
>
> _______________________________________________
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>
>


-- 
Jeff Duda
Graduate research assistant
University of Oklahoma School of Meteorology
Center for Analysis and Prediction of Storms
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