Hi Bernhard
That option was meant to give the webclient a hint where to zoom first.
But it probably was forgotten in the server and I agree it would be good
to overwrite the calculated box in the toplevel group.
Regards,
Marco
On 14.02.2014 10:58, Bernhard Ströbl wrote:
Hi Marco,
I have a question in this context (I thought I made ticket but cannot
find it)
What is the sense of setting the bounding box in OWS tab if it is
always calculated to the sum of the bboxes of the layers in the
project? IMHO setting the bbox in the project properties should
override any calculation result.
Background: One of my layers became empty because a user deleted the
last record thus its bbox was calculated to be the whole earth
resulting in QGIS server propagating the whole earth as bbox for this
project.
Bernhard
Am 14.02.2014 10:34, schrieb Marco Hugentobler:
Hi Andrea, Giovanni
QGIS Server doesn't calculate the bbox itself, but it queries the extent
from the layers. So it can be that certain providers calculate the bbox
(of course only if the layer / capabilities document is not cached).
For a faster startup, having a persistent cache as Giovanni suggested
might help.
Regards,
Marco
On 14.02.2014 10:18, G. Allegri wrote:
I don't understand why the qgis-server eed to calculate always the
bbox.
In the server project windows,
qgis ask for the published bbox.
Why it don't use it as bbox rather than calculate it on every
request ?
Marco, correct me if I'm wrong.
QGIS Server doesn't calculate the BBOX, it parses the layers extents
from the .qgs project and then combine them to obtain the entire BBOX.
The only operation it does is reprojecting the extents to WGS84 to
create the EX_GeographicBoundingBox element.
Anyway, in case the project advertises and extent, the combined extent
won't be calculated, so in your case this phase shouldn't be the
bottleneck...
giovanni
The FastCGI don't help really.
In a publishing environment every few hour the instances are
restated to removed zombi process.
This mean that every few hours the FastCGI are emptied and
reloaded.
A fastcgi environment mean to load 20 instances of QGIS-server and
every of them do them own elaboration .
As the bbox calculation for every layer.
GASP.
The start could ask about one hours and more.
Also another problem with the fastcig is that when
I change something on a project I need to restart to Web instances
to dismiss the actual project and reload the new.
So every change in a qgis project need a restart of all proccess
(20 and so on in a fastcgi enviroment) every with a slow bbox
calculation phase.
mmhh...
:/
2014-02-14 9:13 GMT+01:00 G. Allegri <gioha...@gmail.com
<mailto:gioha...@gmail.com>>:
2014-02-14 Marco Hugentobler <marco.hugentob...@sourcepole.ch
<mailto:marco.hugentob...@sourcepole.ch>>:
Hi Andrea
>I suspect that QS try always to recalc the box of every
layer.
QGIS server caches layers (up to 100, but that can be
enhanced using the environment variable
MAX_CACHE_LAYERS). Furthermore, the GetCapabilities
documents are cached (so no recalculation if using
FastCGI).
Thanks Marco, you confirmed what I told Andrea.
It would be a good enhancement if caching could be done in a
persitent manner (out of memory). We could consider, in the
future, to use memcache or something similar.
giovanni
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