>>>That's something we may want to fix.
If I remember correctly, Mapserver in tile mode draws a slightly larger
tile and crops that one (something configurable with GUTTER or so). I
wrote my the code in my pull request along the same principle.
Adjusting the query extent when doing whichshapes() and account for the
size of symbols when adjusting the clipping rectangle once the feature
is obtained might be more efficient?
But maybe this discussion shoud be done in mapserver-dev?
MArco
On 15-02-16 21:23, thomas bonfort wrote:
Steve,
IIRC, we account for the size of symbols when adjusting our clipping
rectangle once we have obtained a feature, but we do not adjust the
query extent when doing whichshapes(). That's something we may want to
fix.
Another use-case would also be when the DATA statement does something
like "ST_Buffer(the_geom,...) as the geom"
--
thomas
On 15 February 2016 at 17:44, Lime, Steve D (MNIT)
<[email protected] <mailto:[email protected]>> wrote:
I know. We use to account for that explicitly.
------------------------------------------------------------------------
*From:* deduikertjes [[email protected]
<mailto:[email protected]>]
*Sent:* Monday, February 15, 2016 2:44 AM
*To:* Lime, Steve D (MNIT); Patrick Meis
*Cc:* [email protected]
<mailto:[email protected]>
*Subject:* Re: [mapserver-users] Rendering of Symbols outside map
window
Steve,
I think the key part in the question is here:
" and the center point of the symbol is no longer inside the map
window".
To my experience a symbol doesn't get drawn at all when the point
which is symbolized is outside the requested extent (WMS mode at
least).
To solve that I created the mentioned pull request.
Or do I miss something?
MArco
On 13-02-16 00:17, Lime, Steve D (MNIT) wrote:
This should already be happening. The drawing code traverses a
layer's class/styles to commute a selection and clipping
rectangle that is larger than the map extent.
------------------------------------------------------------------------
*From:* mapserver-users [[email protected]
<mailto:[email protected]>] on behalf of
mdprive [[email protected] <mailto:[email protected]>]
*Sent:* Friday, February 12, 2016 4:15 PM
*To:* Patrick Meis
*Cc:* [email protected]
<mailto:[email protected]>
*Subject:* Re: [mapserver-users] Rendering of Symbols outside map
window
Hi Patrick,
i've submitted a pull request for extending the map by a buffer
and then clipping it, so that partial symbols on the edge get
rendered as well (wms non tiled mode).
maybe you can build from sources and use this patch to solve your
problem.
marco
--
Op 11 feb. 2016 om 21:54 heeft Ambrogio Foletti
<[email protected] <mailto:[email protected]>> het volgende
geschreven:
Hello Patrick,
if you are using PostGIS as datasource, I would solve the
problem by integrating a st_buffer in the DATA element itself ;)
The added bonus is that you will get the attribute values from a
GetFeatureInfo (if implemented) in the whole buffer zone.
If not, you can try to use tile mode, and add some metabuffer
(see mapserver doc <http://mapserver.org/output/tile_mode.html>)
Cheers!
A. Foletti
2016-02-05 10:58 GMT+01:00 Patrick Meis <[email protected]
<mailto:[email protected]>>:
Hallo,
i have stumbled on a problem.
I am simulating a buffering of point-data with the help of
symbols, which I have set to
sizeunit = meters
size = 760
These rather big symbols disappear from my map when I zoom
in and
the center point of the symbol is no longer inside the map
window.
But a significant part of the symbol should still be displayed.
Is there any possibility of extending the rendered map, so
that the symbols of my points
are still rendered even when they are outside my map window?
Greetz
Patrick
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