Re: [mapserver-users] PHP mapscript recenter problem
Donatas, You'll have to convert the longitude/latitude to pixels. I'm not very familiar with those conversions since I don't play with that often. However, I think the following example can help you to figure out how to do it: http://lists.osgeo.org/pipermail/mapserver-users/2005-June/008214.html Perhaps, someone else on the list could give you a better/smaller example. regards, Alan On January 25, 2010 02:51:41 am Donatas Malinauskas wrote: > Hi Alan, > > Thanks for yours reply! Yes now it's clear pixels are integers... It is > too bad that this simply function mismatches to me. Is there other > recenter function which works with x,y in lonlat? I didn't see something > like that in mapserver/mapscript documentation... > > Good day, > Donatas. > > Alan Boudreault wrote: > > Donatas, > > > > The x,y given to the zoomPoint function are in PIXEL, not lonlat. You > > cannot specify a half pixel. That said, pixel are integers, not double. > > > > Alan > > > > On January 22, 2010 03:22:30 am Donatas Malinauskas wrote: > >> HGood day, > >> > >> I have some problem. I want to recenter my map exactly to users given > >> georeferenced coordinates. For that purpose I use php mapscript function > >> - zoompoint(ZOOMFACTOR,$myXY, WIDTH, HEIGHT, EXTENT) with ZOOMFACTOR=1. > >> But this function doesn't work correctly. ZoomPoint function centers map > >> to rounded x,y position (then I have myX 235.5px and myY 330.42 it > >> rounds to 235px, 330px) and moves map to incorect center coordinates. > >> What should I do in this situation, please give me some advice, how > >> recenter map with best precision. > >> > >> Thanks, > >> Donatas. > >> ___ > >> mapserver-users mailing list > >> mapserver-users@lists.osgeo.org > >> http://lists.osgeo.org/mailman/listinfo/mapserver-users > -- Alan Boudreault Mapgears http://www.mapgears.com ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
Re: Re: [mapserver-users] PHP mapscript recenter problem
Hi Alan, Thanks for yours reply! Yes now it's clear pixels are integers... It is too bad that this simply function mismatches to me. Is there other recenter function which works with x,y in lonlat? I didn't see something like that in mapserver/mapscript documentation... Good day, Donatas. Alan Boudreault wrote: Donatas, The x,y given to the zoomPoint function are in PIXEL, not lonlat. You cannot specify a half pixel. That said, pixel are integers, not double. Alan On January 22, 2010 03:22:30 am Donatas Malinauskas wrote: HGood day, I have some problem. I want to recenter my map exactly to users given georeferenced coordinates. For that purpose I use php mapscript function - zoompoint(ZOOMFACTOR,$myXY, WIDTH, HEIGHT, EXTENT) with ZOOMFACTOR=1. But this function doesn't work correctly. ZoomPoint function centers map to rounded x,y position (then I have myX 235.5px and myY 330.42 it rounds to 235px, 330px) and moves map to incorect center coordinates. What should I do in this situation, please give me some advice, how recenter map with best precision. Thanks, Donatas. ___ 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
Re: [mapserver-users] PHP mapscript recenter problem
Donatas, The x,y given to the zoomPoint function are in PIXEL, not lonlat. You cannot specify a half pixel. That said, pixel are integers, not double. Alan On January 22, 2010 03:22:30 am Donatas Malinauskas wrote: > HGood day, > > I have some problem. I want to recenter my map exactly to users given > georeferenced coordinates. For that purpose I use php mapscript function > - zoompoint(ZOOMFACTOR,$myXY, WIDTH, HEIGHT, EXTENT) with ZOOMFACTOR=1. > But this function doesn't work correctly. ZoomPoint function centers map > to rounded x,y position (then I have myX 235.5px and myY 330.42 it > rounds to 235px, 330px) and moves map to incorect center coordinates. > What should I do in this situation, please give me some advice, how > recenter map with best precision. > > Thanks, > Donatas. > ___ > mapserver-users mailing list > mapserver-users@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/mapserver-users > -- Alan Boudreault Mapgears http://www.mapgears.com ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
[mapserver-users] PHP mapscript recenter problem
HGood day, I have some problem. I want to recenter my map exactly to users given georeferenced coordinates. For that purpose I use php mapscript function - zoompoint(ZOOMFACTOR,$myXY, WIDTH, HEIGHT, EXTENT) with ZOOMFACTOR=1. But this function doesn't work correctly. ZoomPoint function centers map to rounded x,y position (then I have myX 235.5px and myY 330.42 it rounds to 235px, 330px) and moves map to incorect center coordinates. What should I do in this situation, please give me some advice, how recenter map with best precision. Thanks, Donatas. ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
