Re: how do I reverse lat. axis for binary data?

[Andrew Wittenberg <Andrew.Wittenberg@xxxxxxxx>]

On Thu, 15 Jan 2004, Glenn Carver wrote:
> I'm reading some binary data that's ordered north to south.  If I do:
> 
> def axis/x=-179.5:179.5:1/unit=degree xax
> def axis/y=89.5S:89.5N:1/unit=degree yax
> def grid/x=xax/y=yax gg
> file/var=depth/grid=gg/format=stream mydat.bin
> shade depth
> 
> It works fine except the plot is "outside down" in the sense the NH 
> is plotted as the SH.
> 
> I was expecting to solve this by just doing this:
> 
> def axis/y=89.5N:89.5S:-11/unit=degree yax
> (i.e. reverse the latitude axis)
> 
> but Ferret doesn't like it:
>   **ERROR: invalid command: DEFINE AXIS/DEPTH needs /Z=lo:hi:del
> 
> How do I reverse the latitude axis?

Hi Glenn,

The following should help:

http://ferret.pmel.noaa.gov/Ferret/Mail_Archives/fu_2000/msg00156.html
http://ferret.pmel.noaa.gov/Ferret/Mail_Archives/fu_2001/msg00650.html
http://ferret.pmel.noaa.gov/Ferret/Mail_Archives/fu_2002/msg00413.html
http://ferret.pmel.noaa.gov/Ferret/Mail_Archives/fu_2003/msg00597.html

FYI, I found these by searching the mail archives

  http://ferret.pmel.noaa.gov/cgi-bin/marc-search.cgi

for various combinations of "flip reverse lat y axis".

Cheers,

Andrew

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