[gradsusr] descriptor file (skip to read data)

[Jennifer Adams]

You will have to make separate descriptors for each half-day. GrADS does not allow a non-linear time axis; the interval between each time step must be the same.
--Jennifer


On Apr 17, 2012, at 9:03 PM, wendi harjupa wrote:

> Dear Sir/Madam
> 
> I need help to read Radar data..
> 
> Here is the file ctl of data
> 
> DSET  1013.dat
> TITLE  RADAR
> OPTIONS  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  00:00Z10apr2004  4mn
> VARS    2
> ref 39  99  Reflectivity(dBZ)
> vel 39  99  Doppler Velocity(m/s)
> ENDVARS
> 
> 
> I can make time series data for 13 days by using the descriptor data 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    3600 LINEAR 00:00Z10apr2004  4mn 
> VARS    2
> ref 39  99  Reflectivity(dBZ)
> vel 39  99  Doppler Velocity(m/s)
> ENDVARS
> 
> As you see, one day data put in one folder (%y4%m2%d2), and each folder contain 24 hour data (%d2%h2)
> 
> The question is, if I  want to make time series data just for half day (from 00.00 - 13.00) , and I want to skip from 14.00 - 23.00
> and contunue to read from 00.00 - 13.00 in the next day, what I have to do with my descriptor file??
> 
> Thank you very much for your help in advance..
> 
> 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
> 
> _______________________________________________
> gradsusr mailing list
> gradsusr at gradsusr.org
> http://gradsusr.org/mailman/listinfo/gradsusr

--
Jennifer M. Adams
IGES/COLA
4041 Powder Mill Road, Suite 302
Calverton, MD 20705
jma at cola.iges.org



-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://gradsusr.org/pipermail/gradsusr/attachments/20120418/51f76b31/attachment-0003.html