Re: [ferret_users] wHDF not supported on this platform

[Martin Schmidt <martin.schmidt@xxxxxxxxxxxxxxxxx>]

Hi Ryo,

you could use animation on the fly:

use coads_climatology
repeat/l=1:12/anim/loop=10 shade sst

However, this requires that your X-server supports a virtual fram 
buffer, i.e. "backing store" must be enabled.

This does not work for example with the latest ferret release for AIX, 
even if -bs is set for the X-server.

For linux (suse distribution) this works fine if there is a line

Option "backingstore" "true"

in XF86Config. However, in the latest suse release (11) this nice 
feature is broken. The developers of kde
with the "plasma" features do not care about backing store. If you 
switch on backing store your screen freezes
soon. Searching the forums and help areas there are answers like "Who 
needs this - switch it off ... :-(

Virtual machines often do not support backing store too. So it would be 
great, if some other solution could be found.

Another way is to use whirlgif and gifview

rm sst.gif*
ferret -gif
yes? use coads_climatology
yes? repeat/l=1:12 (shade/lev=(-2,32,1) sst;fill/over/lev=(-2,32,1) sst;go fland 20;frame/file=sst.gif)
quit

mv sst.gif sst.gif.~12~
ls sst.gif.* | sort -t~ +1 -n  > gifs.cmd
whirlgif -o sst.gif -loop -i gifs.cmd 

gifview -a  sst.gif 

Best,
Martin

Ryo Furue wrote:
> Hi Ferret users,
>
> Ferret 6.61 exits with error "wHDF not supported on this platform".
>
>   bash$ ferret
>           NOAA/PMEL TMAP
>           FERRET v6.61  
>           Linux rh5 (gfortran) 2.6.18-164.11.1.el5 - 04/28/10
>           30-Jun-10 11:18     
>   yes? set data levitus_climatology
>   yes? fill/l=1/k=1 temp
>   yes? frame
>   wHDF not supported on this platform
>   bash$
>
> I'm reporting this mainly as an instance of Ferret "crash".
> A FRAME command without qualifiers isn't terribly important
> to me.  I was just using it as a means of reducing the
> flickering of on-the-fly animation:
>
>   yes? repeat/l=1:120 (fill/l=1/k=1 temp)        !! flickers.
>   yes? repeat/l=1:120 (fill/l=1/k=1 temp; frame) !! Easier to see.
>
> (Is there an alternative?)
>
> Regards,
> Ryo
>