Re: Front end GUI or Widet?

From: Saji Njarackalazhikam Hameed <saji_at_nyahnyahspammersnyahnyah>
Date: Thu, 12 Jul 2007 14:18:11 +0900

Michael,

I have been trying to do something like this for my use. I worked on
two types of mechanisms.

  1. A set of routines would help to interactively subset and plot as you do
     in grads.

     I usually open a netcdf data and with the use of this library and
      can say things like
     setlat(-30,30)
     or
     settime("1Jun1999,20Jun1999")
     etc

    and do things like
    shaded(sst) or contour(sst)

    This routines are not so well developed and needs lot of working.
    But I can send it to you over the weekend if you are interested.

2. The second way is not really for interactive plotting. It was developed
   as part of an automated climate monitoring system. In this case we
   set up a data base with some predefined conventions and structure.
   By data base I mean just a flat data base (none of the SQL stuff).
   All data is ordered with a particular structure-
   For instance TMI/Mean/2007/sst.nc or NCEP/Anomaly/2007/hgt_1000.nc

   We then use an interface to retrieve data in a relatively painless way
  
   For instance to get a time series of TMI SST anomalies area-averaged
   between 30 S and 30 N and 40 E to 120 E, we could say

   opt=True
   opt_at_DataSource="TMI"
   opt_at_DataType="Anomaly"
   opt_at_DataPeriod=(/"1Jan1997,31Jan2007"/)
   opt_at_Lat=(/-30,30/)
   opt_at_LatAve=True
   opt_at_Lon=(/40,120/)
   opt_at_LonAve=True
   var=sliceData(opt) ; returns sst averaged over tropical Indian Ocean
                        for period 1Jan1997 to 31Jan2007.

If these are of interest to you, please let me know.

saji

* Michael Uddstrom <m.uddstrom_at_niwa.co.nz> [2007-07-12 17:02:24 +1200]:

> Perhaps a dumb question - but...
>
> Has anyone built a gui to sit on top of ncl, so that it is easy to
> interactively select and display fields in a file (or files) - a bit like a
> "super ncview" application.
>
> If not (which we suspect might be the case) what would you suggest (GrADS,
> IVE, ...?)
>
> Thanks very much for your help
>
> Michael
>
> --
> Dr. Michael J. Uddstrom
> Science Leader: Environmental Forecasting
> Principal Scientist: Meteorology and Remote Sensing
> National Institute of Water and Atmospheric Research
> Private Bag 14-901, Wellington, New Zealand
> DDI: +64 4 386 0365, Fax: +64 4 386 2153,
> Home: +64 4 478 9734
> http://www.niwa.co.nz/

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-- 
Saji N. Hameed
APEC Climate Center          				+82 51 668 7470
National Pension Corporation Busan Building 12F         
Yeonsan 2-dong, Yeonje-gu, BUSAN 611705			saji_at_apcc21.net
KOREA
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Received on Wed Jul 11 2007 - 23:18:11 MDT

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