"Capturing" mapserver images

[Stephen Davies]

Thanks very much Chris. I shall research your suggestion.

The hurdle that I see is that (currently) the database must be updated 
with calculated state data for each timestamp.

Cheers,
Stephen

On Monday 13 March 2006 19:50, chris at narx.net wrote:
> Hi Steve, WMS-Time support is my obvious suggestion for your
> situation.
>
> Check out http://mapserver.gis.umn.edu/docs/howto/wms_time_support
> for setting up inside Mapserver and also
> http://geoservices.cgdi.ca/mapbuilder/demo/timeSeries/index.html for
> an example of a "pseudo-animation" mapbuilder client which seems to
> fit your requirements quite well.
>
> Regards,
>
> Chris
>
> Quoting Stephen Davies <sdc at SDC.COM.AU>:
> > Greetings.
> >
> > I need to be able to present a series of maps for "time lapse"
> > display.
> >
> > The PostgreSQL database behind the mapserver application in
> > question contains both geometry and time-based attribute values and
> > the map file currently used to display the data uses layers,
> > filters and classes to colour geometries according to current
> > attribute values.
> >
> > The idea is to somehow capture the images showing the geometry
> > states at, for example, noon each day for the past month and then
> > use javascript to display those images as a "movie" similar to
> > those provided by many weather bureaux.
> >
> > I have tried doing it simply by pausing in the browser between
> > repaint requests but there is too much variability between browsers
> > and - in particular - between broadband and dialup users.
> >
> > I know I could achieve the objective by writing a PERL or Java
> > program to emulate a browser, retrieve the output image name and
> > ignore the output but wondered if there were a simpler method such
> > as invoking mapserver in map mode from a shell.
> >
> > Any suggestions and/or advice would be most welcome.
> >
> > Cheers and thanks,
> > Stephen Davies
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Stephen Davies Consulting                            Voice: 08-8177 1595
Adelaide, South Australia.                             Fax: 08-8177 0133
Computing & Network solutions.                       Mobile:0403 0405 83