[OpenLayers-Users] pdf export: why the request for tile
dimensions of 625x458
Robert Buckley
robertdbuckley at yahoo.com
Fri Nov 25 07:04:24 EST 2011
Hi,
Yep, that makes sense and I had obviously gathered this by testing.
What I am interested in, is understanding
...1.why/what is requesting this strange tile size. 625x458 is rather odd. GWC produces 256x256 Openlayers is also set to this dimension.
and
...2. Why geoserver advertises TMS when It doesn´t load.
http/maps.zgb.de/geoserver >right hand side as services > GWC ERROR 400: Unable to find handler for service "tms"
"That is, in essence, what you have to do programatically whenever youwant to print." --have no idea how I would go about doing this! will look into the geoext docs to see if there are any possibilities.
thanks anyway for helping and giving your time.
yours,
Rob
________________________________
Von: Tobias Reinicke <ramotswa at gmail.com>
An: Robert Buckley <robertdbuckley at yahoo.com>
Cc: "users at openlayers.org" <users at openlayers.org>
Gesendet: 11:27 Freitag, 25.November 2011
Betreff: Re: [OpenLayers-Users] pdf export: why the request for tile dimensions of 625x458
Hi Robert,
So just a quick one;
the error gwc request that you sent initially:
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
doesn't work obviously, as you established. What I was saying about
stripping out the gwc part is that if you replace
http://maps.zgb.de/geoserver/gwc/service/wms?
with
http://maps.zgb.de/geoserver/zgb/wms?
you will get a request that works:
http://maps.zgb.de/geoserver/zgb/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
That is, in essence, what you have to do programatically whenever you
want to print.
Does that make more sense?
Toby
On 24 November 2011 14:34, Toby Reinicke <ramotswa at gmail.com> wrote:
> 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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