[GRASS-dev] Re: [GRASS-user] Compiling grass 6.2.1: i.class error

[Hamish]

Glynn Clements wrote:
> 
> > > Actually, a script using r.out.ppm, pnmcat and mplayer might add
> > > some I/O overhead, but that's likely to be less significant, given
> > > that xganim is limited to the amount of data which can be held in
> > > memory.
> > 
> > i.e. a replacement for r.out.mpeg.
> 
> Not really. Conversion to MPEG-type video has significant overhead;
> xganim will often be used for one-off animation. Note that I'm talking
> about using mplayer to play a sequence of PPM files.

which is why I pointed to the ImageMagick tricks on the wiki page to
make animated GIFs or PNGs (MNG).  (convert + display) less processor
overhead, but a lot more memory overhead.
  http://grass.gdf-hannover.de/wiki/Movies

We probably just need a tool to output a series of frames. Once you have
that you can encode or slideshow in any number of ways using wrapper
scripts around that.
  http://grass.gdf-hannover.de/wiki/Movies#Animate_to_files


?

Hamish