[OpenLayers-Users] pdf export: why the request for tile
dimensions of 625x458
Toby Reinicke
ramotswa at gmail.com
Thu Nov 24 09:34:58 EST 2011
Yes, printing is great fun!
So the 'related geoserver' layer stuff means that you catch the print request before it is sent, and replace anything relating to gwc in it. I.e if you are getting tiles from gwc using a bbox, chances are you can just strip out the gwc part of the URL and send that request straight to the wms layer on geoserver and get back the same image (albeit much slower).
That will get you any data that resides in geoserver (vectors and rasters both). However if you are trying to print user generated polygons / text that hasn't been committed to geoserver yet you're in a whole new ball game.
Will have a play with your code over the next few days and see what I can come up with.
Toby
On 24 Nov 2011, at 13:42, Robert Buckley <robertdbuckley at yahoo.com> wrote:
> ok thanks.
>
> If the solution is to server the layers as tms then i´m out of luck because TMS is not working in my installed version of geoserver I don´t understand what "redirecting the willed GWC
> layers to the related GeoServer layers before they are printed" means.!!?!
>
> I have tried to make a simple html print window in javscript, but now the problem is that the raster backgrounds only work in IE9 on Windows7 and on SP only the vector data can be printed!
>
> I neve knew that printing could be such a head ache!
>
> yours,
>
> Rob
>
> Von: Tobias Reinicke <ramotswa at gmail.com>
> An: Robert Buckley <robertdbuckley at yahoo.com>
> Gesendet: 14:02 Donnerstag, 24.November 2011
> Betreff: Re: [OpenLayers-Users] pdf export: why the request for tile dimensions of 625x458
>
> Hi Robert,
> So from that link the sentence that is most important is:
>
> The solution is to use OpenLayers.Layer.TMS for the geowebcache layers
> rather than OpenLayer.Layer.WMS
>
> So you're WMS layers needs to change to be a TMS layer, if that is
> acceptable to you. The other solution is in the next post:
> I also went into this problem few days ago. I tried using TMS layers but
> without success. The solution I pitched on was redirecting the willed GWC
> layers to the related GeoServer layers before they are printed. It's not a
> pretty solution, but it works well! [1]
>
>
>
> [1] http://www.mail-archive.com/users@geoext.org/msg01973.html
>
>
>
> Toby
>
> On 24 November 2011 07:39, Robert Buckley <robertdbuckley at yahoo.com> wrote:
> > Hi,
> > Thanks for the reply.
> > according to my research it is possible. gbrun manaed to get this working
> > with TMS services with the help of Matt Prior documented in the link below.
> > The proof is in the online map here
> > http://gis.catawbacountync.gov/gwc/print_gwc.html
> > http://www.mail-archive.com/users@geoext.org/msg01973.html
> >
> > yours,
> > Rob
> >
> >
> > ________________________________
> > Von: Toby R <ramotswa at gmail.com>
> > An: Robert Buckley <robertdbuckley at yahoo.com>
> > Cc: "geoserver-users at lists.sourceforge.net"
> > <geoserver-users at lists.sourceforge.net>; "users at mapfish.org"
> > <users at mapfish.org>; "users at geoext.org" <users at geoext.org>;
> > "users at openlayers.org" <users at openlayers.org>
> > Gesendet: 8:25 Donnerstag, 24.November 2011
> > Betreff: Re: [OpenLayers-Users] pdf export: why the request for tile
> > dimensions of 625x458
> >
> > Hi Robert,
> > This may not be entirely helpful however I don't think that mapfish supports
> > printing from a tile cache. The way it works normally is that it sends the
> > request straight to the wms server which can obviously respond to the size
> > it requires.
> > The reason you are getting that tile size is because that's the size of the
> > window you are trying to print (I presume).
> > As a test, if you were to point your layer_topo straight to the wms does
> > printing work?
> >
> > Toby
> >
> >
> > On 24 Nov 2011, at 06:53, Robert Buckley <robertdbuckley at yahoo.com> wrote:
> >
> >
> > Hi,
> > Problem: I can´t print any tiles coming from geowebcache!
> > gridset: 900913
> > System: Linux Ubuntu 10.04 / tomcat6 / Geoserver 2.1.2
> > Javscript
> > // map
> > var map = new OpenLayers.Map("map", {
> > id: 'map',
> > projection: new OpenLayers.Projection("EPSG:900913"),
> > displayProjection: new OpenLayers.Projection("EPSG:4326"),
> > units: "m",
> > maxResolution: 156543.0339,
> > maxExtent: new OpenLayers.Bounds(-20037508, -20037508, 20037508,
> > 20037508.34),
> > numZoomLevels: 17,
> > controls: [new OpenLayers.Control.MouseDefaults(), new
> > OpenLayers.Control.PanZoomBar(), new OpenLayers.Control.MousePosition(), new
> > OpenLayers.Control.ScaleLine({
> > geodesic: true
> > })]
> > });
> > // layer GWC
> > var layer_topo = new OpenLayers.Layer.WMS("Topographischekarte",
> > "http://maps.zgb.de/geoserver/gwc/service/wms/", {
> > layers: 'zgb:tk50',
> > projection: "EPSG:900913",
> > format: 'image/png',
> > transparent: true,
> > singleTile: false
> > }, {
> > 'buffer': 0,
> > 'opacity': 1,
> > 'isBaseLayer': true,
> > visibility: true
> > });
> > Geoserver log
> > 2011-11-24 07:39:54,199 ERROR [geowebcache.GeoWebCacheDispatcher] - The
> > requested tile dimensions 625x458 do not match those of the grid set
> > (256x256) http://maps.zgb.de/geoserver/gwc/service/wms
> > 2011-11-24 07:39:54,200 WARN [print.PDFUtils] - Server returned an error for
> > http://maps.zgb.de/geoserver/gwc/service/wms?BBOX=1176787.0%2C6892762.5%2C1181754.1%2C6899536.0&HEIGHT=625&WIDTH=458&map_resolution=75&SERVICE=WMS&REQUEST=GetMap&STYLES=&TILESIZE=%7B%22w%22%3A256%2C%22h%22%3A256%7D&TRANSPARENT=true&VERSION=1.1.1&FORMAT=image%2Fpng&PROJECTION=EPSG%3A900913&format_options=dpi%3A75&LAYERS=zgb%3Atk50&SINGLETILE=false&SRS=EPSG%3A900913:
> > Error (status=400) while reading the image from
> > http://maps.zgb.de/geoserver/gwc/service/wms?BBOX=1176787.0%2C6892762.5%2C1181754.1%2C6899536.0&HEIGHT=625&WIDTH=458&map_resolution=75&SERVICE=WMS&REQUEST=GetMap&STYLES=&TILESIZE=%7B%22w%22%3A256%2C%22h%22%3A256%7D&TRANSPARENT=true&VERSION=1.1.1&FORMAT=image%2Fpng&PROJECTION=EPSG%3A900913&format_options=dpi%3A75&LAYERS=zgb%3Atk50&SINGLETILE=false&SRS=EPSG%3A900913:
> > Bad Request
> > pdf error attatchment
> > java.io.IOException: Error (status=400) while reading the image from
> > http://maps.zgb.de/geoserver/gwc/service/wms?BBOX=1091694.4%2C6741760.5%2C1250642.0%2C6958507.0
> > &HEIGHT=625&WIDTH=458
> > &map_resolution=75&SERVICE=WMS&REQUEST=GetMap
> > &STYLES=&TILESIZE=%7B%22w%22%3A256%2C%22h%22%3A256%7D&TRANSPARENT=true
> > &VERSION=1.1.1&FORMAT=image%2Fpng&PROJECTION=EPSG%3A900913&format_options=dp
> > i%3A75&LAYERS=zgb%3Atk50&SINGLETILE=false&SRS=EPSG%3A900913: Bad Request
> >
> >
> >
> > Can anyone tell me why the mapfish print is requesting tile dimensions of
> > 625x458?
> >
> >
> > Yours with thanks,
> > Rob
> >
> > _______________________________________________
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> >
> >
> >
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> >
>
>
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