Feature request #7868
Integrate time manager plugin into core, add animation time variables to expression engine
|Pull Request or Patch supplied:||No||Resolution:|
|Easy fix?:||No||Copied to github as #:||16743|
Watching http://www.youtube.com/watch?v=qKesia0aGwE makes me think how sweet it would be if a variant of the Time Manager plugin was integrated into core. This could then allow us to use the animation time parameter for data defined symbology/labelling expressions. I'm thinking points which grow/shrink/fade with time, labels which show for a few seconds when a point appears before smoothly fading away, ...!
For instance, if the animation time was available via a variable such as "$animation_datetime", then an expression for fading a symbol over a week could be something like:
Color fill expression:
color_rgba(255, 0, 0, scale_linear(day(age($animation_datetime, layer_time_column)) , 0, 7, 255, 0))
scale_linear(day(age($animation_datetime, layer_time_column)) , 0, 7, 30, 0)
Would result in something like:
Even these kind of maps (from 0:22 onward) http://www.youtube.com/watch?v=cUhrEMEQfXw would be possible!