byteswapped and yrev

[Shailendra Rai]

Hello,
For transferring data files from one plateform to another platform you can use byteswapped at the starting (first line) of the control file.

bye
  


On Wed, 01 Feb 2006 N Jyothi wrote :
>While creating and transferring data files from one platform to another, I
>was not sure about the right option to be specified in the grads control
>file.
>
>Thanks Douglas for the explanation.
>
>Regards - Jyothi
>
>----- Original Message -----
> From: "Douglas Clark" <dbcl at CEH.AC.UK>
>To: <GRADSUSR at LIST.CINECA.IT>
>Sent: Wednesday, February 01, 2006 4:14 PM
>Subject: Re: byteswapped and yrev
>
>
> > I'm not sure I can give you much detail, beyond what's in the web
> > documentation, but here are the basics:
> >
> > 'yrev' means that the data are stored in your file in "north to south"
> > order.
> > Without yrev, GrADS expects the data to be stored in "south to north"
> > order, that is, the southernmost row of data first, then the next
> > row...,ending with the northernmost row (eg 90S, 80S, 70S,...,80N,
> > 90N).
> > With yrev, the northernmost row is stored first (eg 90N, 80N,...).
> > GrADS uses yrev when it reads data from the file, so that it knows to
> > reverse the row order before plotting.
> >
> > 'byteswapped' means that the order of the bytes in the data file is not
> > the default for your computer. Again, GrADS uses this when it reads data
> > in. If you only ever use GrADS on the same computer that you use to
> > write the data files, chances are you won't ever need byteswapped. (The
> > little_endian and big_endian options are argueably more useful, as the
> > ctl files can then be used on any machine, regardless of byte order).
> >
> > Often you don't need either of the yrev or byteswapped options - it
> > just depends on your data files.
> >
> > Doug
> >
> >
> > >>> njyothi at CDAC.IN 01/02/2006 10:03:24 >>>
> > Hello Grads Users
> >         I haven't entirely understood the 'yrev' and 'byteswapped'
> > options
> > in grads. Can someone pls explain these options in detail?
> >
> > Jyothi
> >
> > --
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> >


*************************************************
Shailendra Rai                                
K. Banerjee Centre of Atmospheric and Ocean Studies 
University of Allahabad
INDIA
Phone 09415649617
Telefax +915322460974 
Mail ID r_shail1977 at yahoo.co.in 
*************************************************

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