Could also use class groups and send the appropriate group value with your request.
Steve -----Original Message----- From: mapserver-users-boun...@lists.osgeo.org [mailto:mapserver-users-boun...@lists.osgeo.org] On Behalf Of Stephen Woodbridge Sent: Monday, March 03, 2014 10:46 AM To: mapserver-users@lists.osgeo.org Subject: Re: [mapserver-users] Color temperature control (night-time viewing of maps) On 3/3/2014 11:30 AM, Basques, Bob (CI-StPaul) wrote: > All, > > So, I've been reading up on nighttime colors for electronic display(s). > I was wondering if anyone has any pointers on information about > applying color temperature corrections to displays for nighttime > viewing. I'm in need of providing this functionality to some night crew > workers. > > My first thought was to apply some sort of RGB algorithm to the > mapfile color settings. Then I thought maybe a middleware processor > routine (between MapServer and the browser) might be a better > approach, or possibly using something in the browser . . . > > I'm only looking at setting up distinct color settings at the moment. > Maybe 3-5 ranges to start with. I do know that some Mac hardware has > some display monitoring for color temperature. I would prefer to do > something that could apply globally however. > > Maybe there are Browser functions that can be applied to the problem > (I haven't found anything specific there yet though. Bob, One simple way to deal with this is to have two mapfiles with different colors setup on them and then you a substitution to switch between the day and night mapfile. I wrote some code years ago that detects the day-night night terminator line in javascript to you can make the change. you need to know the browser location to compute this accurately. but a simple [day/night] toggle button would allow the user to switch manually. -Steve W _______________________________________________ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users _______________________________________________ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
