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We are preparing a Tileserver to serve tiles with a time dimension that updates every day. I was wondering what could be the best approach for that or the ideas we had are a good way.

To illustrate the problem:

We have observations for every full hour over 10 hours. That would be then 10 timesteps if implemented with a timeslider. The observations change every day.

Our idea was to make 10 layers which are accessible over a different layername. The layername would reflect the time of the observation(e.g. ISO 8601 timestring) or could be a simple number like 1, 2, 3, ... for every timestep with a corresponding meta.xml containing the date of the first layer and the interval between the timesteps.

Of course it would be the best if the meta.xml would be something like a WMS GetCapabilities. Different tile serving softwares as MapProxy or Mapcache serve some kind of metadata.xml for TMS and WMTS GetCapabilities for WMTS but seem unable to insert a time dimension. How could we implement this? There was a post asking for implementations of the WMS time dimension for a WMTS but maybe in the meantime there where some developments. There is also a blog post on how the guys at nasa added a Dimension block to the WMTS GetCapabilites but I don't know which software they used for it. In the end we would prefer to use some existing standards over implementing our own structure.

Is this a good way to go? Do you think there is a better solution?

  • Did you make any progress on this? – Richard Law Jul 16 '15 at 22:41
  • @alpha-beta-soup: in the end we used the idea I described. Layers with different numbers and a meta.json. I think it is not the robustest way and at some point we will update it. Here you can see the documentation and a demo version – bennos Jul 17 '15 at 8:47
  • Thanks. I just implemented something very similar with MapProxy and a Python script to (re-)generate the configuration YAML. – Richard Law Jul 17 '15 at 9:12

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