[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[IDV #CVS-551537]: animated GIF color bar changes



Hi Don,

Sorry I didn't follow up on this sooner. Did you ever have a chance to check 
this against a visible satellite loop? If not, I can check it out and see about 
making idv.capture.gif.useGlobalTable=true the default.

Sean

> Sean-
> 
> I checked in some code that allows me to "fix" this by setting the property:
> 
> idv.capture.gif.useGlobalTable=true
> 
> The problem is that the exising code uses a different lookup for each
> image in the gif, which is what I suspected.  Setting this property to
> true makes the GIF use the first image in the loop as the global lookup
> table which stops the jittering.  However, I'm not sure what this will
> do if you have a set of images that have drastic color changes (e.g. a
> visible sat loop going from dawn to day where the first image is dark).
> I'll run some tests to see what happens.  Right now, the behavior has
> not changed from before because the property is set to false in
> idv.properties.
> 
> Don
> 
> On 2/1/12 4:28 PM, Unidata IDV Support wrote:
> > Hi Don,
> >
> > I'm currently having fun in the colorbar code right now, so I'll check this 
> > out too.
> >
> > Sean
> >
> >> If you save a movie as an animated GIF from an IDV display that has a
> >> color bar in it, the color bar flickers.  I think this is because the
> >> color scaling on each individual frame is slightly different and the
> >> range that the AnimatedGifEncoder is using doesn't take this into
> >> account.  I don't have time to look into this, but if someone at Unidata
> >> (Sean?) could, that would be great.
> >>
> >> See example at:
> >>
> >> http://motherlode.ucar.edu/repository/entry/show/RAMADDA/IDV+Community+Resources/Examples/Climate+Attribution/Scenario+Comparison?entryid=09daf6ac-793e-4939-bdfd-4ef4b24fd7df
> >>
> >> Don
> >> --
> >> Don Murray
> >> NOAA/ESRL/PSD and CIRES
> >> 303-497-3596
> >> http://www.esrl.noaa.gov/psd/people/don.murray/
> >>
> >>
> >
> >
> > Ticket Details
> > ===================
> > Ticket ID: CVS-551537
> > Department: Support IDV
> > Priority: Normal
> > Status: Open
> >
> 
> --
> Don Murray
> NOAA/ESRL/PSD and CIRES
> 303-497-3596
> http://www.esrl.noaa.gov/psd/people/don.murray/
> 
> 


Ticket Details
===================
Ticket ID: CVS-551537
Department: Support IDV
Priority: Critical
Status: Open


NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.