Re: animated GIF

*To*: mathgroup at smc.vnet.net*Subject*: [mg81593] Re: animated GIF*From*: Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com>*Date*: Fri, 28 Sep 2007 02:19:04 -0400 (EDT)*Organization*: The Open University, Milton Keynes, UK*References*: <fddc11$1p9$1@smc.vnet.net>

Veit Elser wrote: > I'm having trouble exporting GIF animations from Mathematica. The > problem seems to be the color map. I notice this when importing the > animation into other applications, in particular Apple's Keynote > presentation software. The resulting animation is very dependent on > the first frame. For example, if some colors used in later frames > don't appear in the first frame, then these are rendered black. > Should I be instructing Mathematica to create a global color map? If > so, how is that done? Several data elements can be used to instruct Mathematica how to handle color maps. For instance (I believe you are looking for this one), "GlobalColorMap" : color reduction palette used by all frames, given as a list of RGBColor objects But there is also many other settings, such as "ColorMap" : color reduction palette "Data" : array of RGB color values "GrayLevels" : array of normalized gray-level values "RawData" : array of color map indices "RGBColorArray" : array of RGBColor objects (Check the documentation center at ref/format/GIF -> ELEMENTS -> Data representation elements for a static GIF or the frames of animated GIF files.) HTH, -- Jean-Marc